For satellite up and downlink signals MIRAD is the trusted provider of passive RF infrastructure hardware and services for ground station antennas of any type and make.

From 1 GHz up to 70 GHz, we deliver a complete range of antenna & waveguide solutions with Swiss precision & quality.

We design and manufacture:

  • Feed systems
  • Feed networks
  • Switching/combining systems
  • Standard waveguide components

With either purpose built solutions, where we match your specific requirements, or standardized solutions of feed systems, feed modules, and feed components, we are here for you.

We guarantee confidentiality. When sharing your specification with us, your sensitive data is handled with upmost confidentiality and protected by a non-disclosure agreement (NDA).

S-band feed system with feed can – more information available in References

All our solutions consistently deliver the best possible RF performance, due to our proven RF engineering skills and in-house availability of  adequate simulation and testing infrastructure.

Take a look below of the solutions we offer. 

Systems

MIRAD has successfully completed a notable amount of projects around the globe with complex multi-band feed systems, feed networks and multi-channel switching and combining systems for commercial, military and scientific applications. More over, we advise you to purchase the complete waveguide RF system (feed and RX/TX network) from a single source if you want maximum RF performance and transmission power.

  • Feed System
  • Feed Network
  • Power Combining Systems

A Typical MIRAD Feed System

For the reception and transmission of microwave signals from and into space

Ka-band feed system integrated into feed can including feed window rain blower
Ka-band feed system integrated into feed can including feed window rain blower

Feed Can

  • Feed tube optional with service doors
  • Rain blower (optional)
  • Feed heating device (optional)
  • Feed flange (customized to the antenna reflector vertex for smooth on-site integration)

Feed Assembly (Orange)

Standardized and custom build models for all frequency bands from 1 GHz up to 70 GHz.

  • Feed horn including feed window (single/double)
  • Tracking coupler (optional)
  • Feed Combiner (linear or circular – switchable optional)

Single bands:

  • L-band
  • S-band
  • C-band
  • X-band
  • Ku-band
  • K-band
  • Ka-band
  • Q-band
  • V-band

Selection of multi bands:

  • L-/X-band
  • S-/K-band
  • S-/S-X-band
  • S-/X-/X-band
  • S-/X-/Ka-band
  • C-/Ku-band
  • X-/X-/K-band
  • Ku-/DBS-band
  • Ka-/Q-/V- band
  • Q-/V-band

Feed Network (Green)

Waveguides to connect the customer defined interfaces to the feed assembly ports – optional with polarization and / or redundancy switching.

More information available in Feed Networks.

Custom Builds

MIRAD feed systems can be adapted to any antenna type or make. We provide feed systems for new and existing

  • Standard antennas 
  • Purpose built antennas

For the latter, MIRAD supplies the reflector design including a precise forecast on expected antenna performance. When designing a feed system it is our policy to apply as many of our standard feed modules as possible, such as the feed combiner or the filters, to minimize project risks and to ensure cost efficiency as well as acceptable delivery times.

Used Antennas

As most used antennas are upgradeable, MIRAD offers

  • Antenna upgrade assessments
  • Feed system design upgrades
  • On-site installation (optional)

Prior to delivery, all of our feed systems are thoroughly tested and documented in detail.

Water cooled X-/ K-band feed system integrated into feed can
Water cooled X-/ K-band feed system integrated into feed can – more information available in References

Adjacent to the feed assembly, MIRAD offers

  • Rx redundancy & testing networks
  • Tx redundancy & power combining networks

The compact networks are designed according to customer requirements with optimized frequency paths to minimize system losses.

Manufactured feed networks are RF & pressure tested prior to delivery. Active RF components (amplifiers) and electronic control devices will either be supplied by the customer (to test the network) or purchased and integrated by MIRAD.

Options

  • Integration of electronic control unit
  • Integration of complete cabling
  • On-site installation
S-band Rx- and Tx-network
S-band Rx redundancy and Tx switching network

A large number of MIRAD multi-channel switching and combining systems are in operation around the world.

Key Features

  • General lay-out of the system and position of the in- and outputs according to customer specification
  • Systems are expandable as a result to modularity
  • Compact design generating minimal system losses
  • Integrated coupler filter combiners are precisely tuned to required center frequencies (also available as single components)
  • Availability of optional on-site installation and support by MIRAD
Switching & Combining Systems
Ku-band 9:2 channel switching and combining system – more information available in References

  • Feed System
  • Feed Network
  • Power Combining Systems

A Typical MIRAD Feed System

For the reception and transmission of microwave signals from and into space

Ka-band feed system integrated into feed can including feed window rain blower
Ka-band feed system integrated into feed can including feed window rain blower

Feed Can

  • Feed tube optional with service doors
  • Rain blower (optional)
  • Feed heating device (optional)
  • Feed flange (customized to the antenna reflector vertex for smooth on-site integration)

Feed Assembly (Orange)

Standardized and custom build models for all frequency bands from 1 GHz up to 70 GHz.

  • Feed horn including feed window (single/double)
  • Tracking coupler (optional)
  • Feed Combiner (linear or circular – switchable optional)

Single bands:

  • L-band
  • S-band
  • C-band
  • X-band
  • Ku-band
  • K-band
  • Ka-band
  • Q-band
  • V-band

Selection of multi bands:

  • L-/X-band
  • S-/K-band
  • S-/S-X-band
  • S-/X-/X-band
  • S-/X-/Ka-band
  • C-/Ku-band
  • X-/X-/K-band
  • Ku-/DBS-band
  • Ka-/Q-/V- band
  • Q-/V-band

Feed Network (Green)

Waveguides to connect the customer defined interfaces to the feed assembly ports – optional with polarization and / or redundancy switching.

More information available in Feed Networks.

Custom Builds

MIRAD feed systems can be adapted to any antenna type or make. We provide feed systems for new and existing

  • Standard antennas 
  • Purpose built antennas

For the latter, MIRAD supplies the reflector design including a precise forecast on expected antenna performance. When designing a feed system it is our policy to apply as many of our standard feed modules as possible, such as the feed combiner or the filters, to minimize project risks and to ensure cost efficiency as well as acceptable delivery times.

Used Antennas

As most used antennas are upgradeable, MIRAD offers

  • Antenna upgrade assessments
  • Feed system design upgrades
  • On-site installation (optional)

Prior to delivery, all of our feed systems are thoroughly tested and documented in detail.

Water cooled X-/ K-band feed system integrated into feed can
Water cooled X-/ K-band feed system integrated into feed can – more information available in References

Adjacent to the feed assembly, MIRAD offers

  • Rx redundancy & testing networks
  • Tx redundancy & power combining networks

The compact networks are designed according to customer requirements with optimized frequency paths to minimize system losses.

Manufactured feed networks are RF & pressure tested prior to delivery. Active RF components (amplifiers) and electronic control devices will either be supplied by the customer (to test the network) or purchased and integrated by MIRAD.

Options

  • Integration of electronic control unit
  • Integration of complete cabling
  • On-site installation
S-band Rx- and Tx-network
S-band Rx redundancy and Tx switching network

A large number of MIRAD multi-channel switching and combining systems are in operation around the world.

Key Features

  • General lay-out of the system and position of the in- and outputs according to customer specification
  • Systems are expandable as a result to modularity
  • Compact design generating minimal system losses
  • Integrated coupler filter combiners are precisely tuned to required center frequencies (also available as single components)
  • Availability of optional on-site installation and support by MIRAD
Switching & Combining Systems
Ku-band 9:2 channel switching and combining system – more information available in References

Engineering

After thorough analysis, our experienced RF Engineers with their advanced simulation skills and tools provide optimal and feasible design proposals as well as the most efficient performance estimations. Recently, the power handling expectations for our systems have notably increased; MIRAD has accrued profound expertise via extensive R&D studies of reliable feasibility analysis for high power applications. Testing and validation is an indispensable element of development for new RF solutions; our testing capabilities and infrastructure are also available for third party systems. Based on the comprehensive experience gained with earth station applications, our engineering team is also in a position to deliver on-board applications.

  • System Design
  • RF Simulation & Reflector Design
  • High Power Applications
  • Testing & Validation

MIRAD Engineering Design Process

The design of our high quality systems and components is complex. It requires a profound RF engineering experience acquired during a considerable amount of time working with MIRAD on similar projects. 

Take a look at the MIRAD engineering design process below.

Whether you have questions regarding antenna sizes, mechanical antenna stability requirements, or reflector compliance with specific frequency bands, our engineers are happy to provide detailed and precise answers.

We Provide:

  • Antenna geometries for the main- and sub-reflector for new ground stations including reflector deformation analysis
  • Antenna performance simulations (e.g. antenna efficiency, radiation pattern, G/T calculations)
  • Definition of the key antenna parameters of existing antennas as a starting point for the feed system design
  • Feasibility assessment of antenna upgrades 
    (e.g. change of frequency bands)
  • Beam waveguide calculation for large ground stations
Antenna Geometry of a Cassegrain Antenna
Antenna Geometry of a Cassegrain Antenna

High transmission power can create several effects that might distort the RF signals. Our engineers recently concluded in-depth multiphysics analysis and simulation of implications of  high power applications of the complete RF path.

For the design of high power feed systems and feed networks, a special focus is required for the analysis of the following physical effects:

  • Heat dissipation / cooling concepts
  • Risks for voltage breakdown

As a result from this analysis, we are able to deliver reliable high power solutions up to 60 kW or even 100 kW (currently in testing phase) for Deep Space Antennas.

Thermal Filter Analysis
Thermal Filter Analysis

In our in-house anechoic chamber (8m x 6m x 6m), MIRAD tests the antenna characteristics of our own systems and prototypes, as well as third party RF products up to 70 GHz. (contact us to check availability and for a quote). Our measurements are three dimensional and in high resolution. The test procedures are software defined for synchronic VNA and hardware-motion controlling.

Our well equipped inventory of measurement tools (for RF and mechanical validation) allows for the execution of any necessary test procedure, and documenting that our deliverables meet – or in many cases – are even better than the agreed upon specifications.

Factory Acceptance Tests are done via telephone or our testing & validation expertise can be witnessed in person.

20120515_MIRAD_CPRTE-244
Anechoic Chamber

  • System Design
  • RF Simulation & Reflector Design
  • High Power Applications
  • Testing & Validation

MIRAD Engineering Design Process

The design of our high quality systems and components is complex. It requires a profound RF engineering experience acquired during a considerable amount of time working with MIRAD on similar projects. 

Take a look at the MIRAD engineering design process below.

Whether you have questions regarding antenna sizes, mechanical antenna stability requirements, or reflector compliance with specific frequency bands, our engineers are happy to provide detailed and precise answers.

We Provide:

  • Antenna geometries for the main- and sub-reflector for new ground stations including reflector deformation analysis
  • Antenna performance simulations (e.g. antenna efficiency, radiation pattern, G/T calculations)
  • Definition of the key antenna parameters of existing antennas as a starting point for the feed system design
  • Feasibility assessment of antenna upgrades 
    (e.g. change of frequency bands)
  • Beam waveguide calculation for large ground stations
Antenna Geometry of a Cassegrain Antenna
Antenna Geometry of a Cassegrain Antenna

High transmission power can create several effects that might distort the RF signals. Our engineers recently concluded in-depth multiphysics analysis and simulation of implications of  high power applications of the complete RF path.

For the design of high power feed systems and feed networks, a special focus is required for the analysis of the following physical effects:

  • Heat dissipation / cooling concepts
  • Risks for voltage breakdown

As a result from this analysis, we are able to deliver reliable high power solutions up to 60 kW or even 100 kW (currently in testing phase) for Deep Space Antennas.

Thermal Filter Analysis
Thermal Filter Analysis

In our in-house anechoic chamber (8m x 6m x 6m), MIRAD tests the antenna characteristics of our own systems and prototypes, as well as third party RF products up to 70 GHz. (contact us to check availability and for a quote). Our measurements are three dimensional and in high resolution. The test procedures are software defined for synchronic VNA and hardware-motion controlling.

Our well equipped inventory of measurement tools (for RF and mechanical validation) allows for the execution of any necessary test procedure, and documenting that our deliverables meet – or in many cases – are even better than the agreed upon specifications.

Factory Acceptance Tests are done via telephone or our testing & validation expertise can be witnessed in person.

20120515_MIRAD_CPRTE-244
Anechoic Chamber

Components

Our passive RF components have been designed on a modular basis allowing easy implementation and are manufactured with our renowned Swiss precision, enabling you to operate your system on the highest possible performance level. We offer several standard solutions, but specialize in customized solutions. The components listed below are only a selection of what we offer. In any case, please contact us.

  • Feed Combiner
  • Waveguides
  • Filter
  • Coupler
  • Terminations
  • Other

Our standard feed combiners often can be found as one key part of our feed systems. Should you consider outsourcing the adaption or upgrade of your feed system entirely, MIRAD is the perfect partner. With our antenna upgrade experience you will get a technically and financially optimized system. However, the feed combiners are also available as stand-alone units for different frequency bands.

Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)
Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)

Feed Combiner Components

4-port Ka-band feed combiner with forced cooling
4-port Ka-band feed combiner with forced cooling
  • Blue: Taper, interface to the circular waveguide
  • Green: Orthomode transducer (OMT), separation of polarization
  • Orange: Diplexers, separation of transmit and receive frequency bands
  • Turquoise: Hybrid couplers, recombination of orthogonal signals to produce circularity

Any component of the feed combiner is available as single component as well. However, in order to get best possible performance a single source solution is recommended.

Popular MIRAD Feed Combiners

Frequency bands:

  • C-band
  • X-band
  • Ku-band / DBS-band
  • Ka-band

Options:

  • 2-port, 4-port and 6-port
  • Linear or circular polarization
  • Straight or folded
  • PIM specification

Please note that the feed combiners are available in a broad range of different types and configurations. Just contact us with your specific requirements and we will provide you with all necessary details immediately. If a standard feed combiner does not meet your specification, our engineering is at your service to design a customized solution.

Another key competences of ours is the design and production of rigid waveguides for all frequencies. Due to our outstanding infrastructure as well as our highly trained workforce we are able to provide, at very short notice as well, customized high quality waveguides.

Key Features

  • Excellent return loss
  • Minimal insertion loss
  • Complex routing
  • Any waveguide size and flange type
  • Short and timely period of supply
  • Our assembly specialists are optionally available for on-site installation
Waveguide Cleaning
Waveguide Cleaning
Waveguide Routing
Waveguide Routing

Whether your specifications are sketched or ready for production is of minor importance. We undertake any necessary design-work, conducted in close cooperation with you and will then manufacture in accordance with our renowned excellent Swiss precision standards. It goes without saying that we deliver any shape, from the simple, straight single component to the highly complex forms of waveguide runs.

MIRAD is proud to have fulfilled every customers technical specifications with precisely designed and manufactured filters, and we strive to continue to do so.

We carry a wide range of standardized products: waveguide and coaxial filters for all typical transmit, receive and harmonic reject filter applications in all RF bands. Furthermore, MIRAD has years of experience in the development and production of filters for channel combination.

Key Features

  • Precise and accurate material simulation
  • Customized combinations of filter-topology for best performance
  • Very low insertion loss
  • Best return loss
  • High stop-band attenuation

In development and production, MIRAD sets high standards through the use of the CNC-machined waveguide structures in split block technique. Our team of highly specialized development engineers, supported by the latest software tools, are keen to challenge your specifications with an elegant and efficient solution that will guarantee electrically and thermally stable filter systems for your daily, uninterrupted use. Do not hesitate, contact us with your specification, however unusual it may be.

Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC
Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC

Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler
Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler

Our wide variety of couplers covers all typical specifications. These high performance products range from simple directional couplers and power splitters/combiners to tailor-made components to meet your individual requirements.

Key Features

  • Exact coupling values
  • High directivity
  • Optimized design in line with your application
  • High precision couplers available

In the development of our standard products, our focus was specifically on the best price-performance ratio. If these couplers do not satisfy your requirements, we are capable of customizing a high quality coupler by combining any necessary coupling value with the best frequency linearity, directivity and return loss in a wide frequency range.

Our wide variety of high grade terminations applicable for small, medium and high power handling as well as high precision measurements, have been developed to enable best possible price-performance ratio for your individual application. The power range of our terminations starts from below 1 W up to 4 kW and above.

Key Features

  • Models with and without forced cooling available
  • High precision terminations for calibration and measurement
  • Excellent return loss
  • Power handling up to 4 kW and above
  • M&C interfaces
  • Control interface compatible to industry standard
Ka-band low power load, C-band medium power load, Ku-band high power load with forced air cooling
Ka-band low power load, C-band medium power load, Ku-band high power load with air cooling

The MIRAD microwave high power terminations are designed to terminate waveguides with a very good return loss within the complete range of waveguide bands. With the integration of the correct termination, the risk of injury through hot surfaces is eliminated. The terminations are pressure tight and outdoor proof. The selection of the correct termination is extremely important to avoid overheating and is driven by the actual power level of your system. Our sales team is more than happy to support you to define the suitable component.

Air Inlet

Soldered C-band air inlet, machined Ku-band air inlet
Soldered C-band air inlet, machined Ku-band air inlet

The MIRAD microwave air inlets are available for all common waveguide sizes and all common flange standards. The air inlets are the indispensible component in every waveguide system and can be combined with an connector defined by the user.

Pressure Window

MIRAD has designed a series of pressure windows optimized for the use in common earth stations where a low overpressure of almost 50 mbar protects the waveguide system against moisture and dirt. Only highest quality grade of materials are used to manufacture each individual pressure window and to maintain the high performance of your entire system. They are available for all common waveguide sizes and flange standards. 

Ku-band and Ka-band pressure windows
Ku-band and Ka-band pressure windows

Feed Window / Radome

In order to prevent moisture and dirt from entering the feed system, the feed horn aperture is closed with a feed window. Depending on the diameter of the aperture, the frequency and the internal overpressure, different materials have to be used. MIRAD can provide you either with a customized pre-cut of your feed window according to your sketch or with sheets of Kapton™, CoreTex™ or Sefar tissue. Do not hesitate to contact us.

  • Feed Combiner
  • Waveguides
  • Filter
  • Coupler
  • Terminations
  • Other

Our standard feed combiners often can be found as one key part of our feed systems. Should you consider outsourcing the adaption or upgrade of your feed system entirely, MIRAD is the perfect partner. With our antenna upgrade experience you will get a technically and financially optimized system. However, the feed combiners are also available as stand-alone units for different frequency bands.

Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)
Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)

Feed Combiner Components

4-port Ka-band feed combiner with forced cooling
4-port Ka-band feed combiner with forced cooling
  • Blue: Taper, interface to the circular waveguide
  • Green: Orthomode transducer (OMT), separation of polarization
  • Orange: Diplexers, separation of transmit and receive frequency bands
  • Turquoise: Hybrid couplers, recombination of orthogonal signals to produce circularity

Any component of the feed combiner is available as single component as well. However, in order to get best possible performance a single source solution is recommended.

Popular MIRAD Feed Combiners

Frequency bands:

  • C-band
  • X-band
  • Ku-band / DBS-band
  • Ka-band

Options:

  • 2-port, 4-port and 6-port
  • Linear or circular polarization
  • Straight or folded
  • PIM specification

Please note that the feed combiners are available in a broad range of different types and configurations. Just contact us with your specific requirements and we will provide you with all necessary details immediately. If a standard feed combiner does not meet your specification, our engineering is at your service to design a customized solution.

Another key competences of ours is the design and production of rigid waveguides for all frequencies. Due to our outstanding infrastructure as well as our highly trained workforce we are able to provide, at very short notice as well, customized high quality waveguides.

Key Features

  • Excellent return loss
  • Minimal insertion loss
  • Complex routing
  • Any waveguide size and flange type
  • Short and timely period of supply
  • Our assembly specialists are optionally available for on-site installation
Waveguide Cleaning
Waveguide Cleaning
Waveguide Routing
Waveguide Routing

Whether your specifications are sketched or ready for production is of minor importance. We undertake any necessary design-work, conducted in close cooperation with you and will then manufacture in accordance with our renowned excellent Swiss precision standards. It goes without saying that we deliver any shape, from the simple, straight single component to the highly complex forms of waveguide runs.

MIRAD is proud to have fulfilled every customers technical specifications with precisely designed and manufactured filters, and we strive to continue to do so.

We carry a wide range of standardized products: waveguide and coaxial filters for all typical transmit, receive and harmonic reject filter applications in all RF bands. Furthermore, MIRAD has years of experience in the development and production of filters for channel combination.

Key Features

  • Precise and accurate material simulation
  • Customized combinations of filter-topology for best performance
  • Very low insertion loss
  • Best return loss
  • High stop-band attenuation

In development and production, MIRAD sets high standards through the use of the CNC-machined waveguide structures in split block technique. Our team of highly specialized development engineers, supported by the latest software tools, are keen to challenge your specifications with an elegant and efficient solution that will guarantee electrically and thermally stable filter systems for your daily, uninterrupted use. Do not hesitate, contact us with your specification, however unusual it may be.

Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC
Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC

Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler
Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler

Our wide variety of couplers covers all typical specifications. These high performance products range from simple directional couplers and power splitters/combiners to tailor-made components to meet your individual requirements.

Key Features

  • Exact coupling values
  • High directivity
  • Optimized design in line with your application
  • High precision couplers available

In the development of our standard products, our focus was specifically on the best price-performance ratio. If these couplers do not satisfy your requirements, we are capable of customizing a high quality coupler by combining any necessary coupling value with the best frequency linearity, directivity and return loss in a wide frequency range.

Our wide variety of high grade terminations applicable for small, medium and high power handling as well as high precision measurements, have been developed to enable best possible price-performance ratio for your individual application. The power range of our terminations starts from below 1 W up to 4 kW and above.

Key Features

  • Models with and without forced cooling available
  • High precision terminations for calibration and measurement
  • Excellent return loss
  • Power handling up to 4 kW and above
  • M&C interfaces
  • Control interface compatible to industry standard
Ka-band low power load, C-band medium power load, Ku-band high power load with forced air cooling
Ka-band low power load, C-band medium power load, Ku-band high power load with air cooling

The MIRAD microwave high power terminations are designed to terminate waveguides with a very good return loss within the complete range of waveguide bands. With the integration of the correct termination, the risk of injury through hot surfaces is eliminated. The terminations are pressure tight and outdoor proof. The selection of the correct termination is extremely important to avoid overheating and is driven by the actual power level of your system. Our sales team is more than happy to support you to define the suitable component.

Air Inlet

Soldered C-band air inlet, machined Ku-band air inlet
Soldered C-band air inlet, machined Ku-band air inlet

The MIRAD microwave air inlets are available for all common waveguide sizes and all common flange standards. The air inlets are the indispensible component in every waveguide system and can be combined with an connector defined by the user.

Pressure Window

MIRAD has designed a series of pressure windows optimized for the use in common earth stations where a low overpressure of almost 50 mbar protects the waveguide system against moisture and dirt. Only highest quality grade of materials are used to manufacture each individual pressure window and to maintain the high performance of your entire system. They are available for all common waveguide sizes and flange standards. 

Ku-band and Ka-band pressure windows
Ku-band and Ka-band pressure windows

Feed Window / Radome

In order to prevent moisture and dirt from entering the feed system, the feed horn aperture is closed with a feed window. Depending on the diameter of the aperture, the frequency and the internal overpressure, different materials have to be used. MIRAD can provide you either with a customized pre-cut of your feed window according to your sketch or with sheets of Kapton™, CoreTex™ or Sefar tissue. Do not hesitate to contact us.

FOR TABLET & MOBILE

Systems

MIRAD has successfully completed a notable amount of projects around the globe with complex multi-band feed systems, feed networks and multi-channel switching and combining systems for commercial, military and scientific applications. More over, we advisable to purchase the complete waveguide RF system (feed and RX/TX network) from a single source if you want maximum RF performance and transmission power.

  • Feed System
  • Feed Network
  • Power Combining Systems

A Typical MIRAD Feed System

For the reception and transmission of microwave signals from and into space

Ka-band feed system integrated into feed can including feed window rain blower
Ka-band feed system integrated into feed can including feed window rain blower

Feed Can

  • Feed tube optional with service doors
  • Rain blower (optional)
  • Feed heating device (optional)
  • Feed flange (customized to the antenna reflector vertex for smooth on-site integration)

Feed Assembly (Orange)

Standardized and custom build models for all frequency bands from 1 GHz up to 70 GHz.

  • Feed horn including feed window (single/double)
  • Tracking coupler (optional)
  • Feed Combiner (linear or circular – switchable optional)

Single bands:

  • L-band
  • S-band
  • C-band
  • X-band
  • Ku-band
  • K-band
  • Ka-band
  • Q-band
  • V-band

Selection of multi bands:

  • L-/X-band
  • S-/K-band
  • S-/S-X-band
  • S-/X-/X-band
  • S-/X-/Ka-band
  • C-/Ku-band
  • X-/X-/K-band
  • Ku-/DBS-band
  • Ka-/Q-/V- band
  • Q-/V-band

Feed Network (Green)

Waveguides to connect the customer defined interfaces to the feed assembly ports – optional with polarization and / or redundancy switching.

More information available in Feed Networks.

Custom Builds

MIRAD feed systems can be adapted to any antenna type or make. We provide feed systems for new and existing

  • Standard antennas 
  • Purpose built antennas

For the latter, MIRAD supplies the reflector design including a precise forecast on expected antenna performance. When designing a feed system it is our policy to apply as many of our standard feed modules as possible, such as the feed combiner or the filters, to minimize project risks and to ensure cost efficiency as well as acceptable delivery times.

Used Antennas

As most used antennas are upgradeable, MIRAD offers

  • Antenna upgrade assessments
  • Feed system design upgrades
  • On-site installation (optional)

Prior to delivery, all of our feed systems are thoroughly tested and documented in detail.

Water cooled X-/ K-band feed system integrated into feed can
Water cooled X-/ K-band feed system integrated into feed can – more information available in References

Adjacent to the feed assembly, MIRAD offers

  • Rx redundancy & testing networks
  • Tx redundancy & power combining networks

The compact networks are designed according to customer requirements with optimized frequency paths to minimize system losses.

Manufactured feed networks are RF & pressure tested prior to delivery. Active RF components (amplifiers) and electronic control devices will either be supplied by the customer (to test the network) or purchased and integrated by MIRAD.

Options

  • Integration of electronic control unit
  • Integration of complete cabling
  • On-site installation
S-band Rx- and Tx-network
S-band Rx redundancy and Tx switching network

A large number of MIRAD multi-channel switching and combining systems are in operation around the world.

Key Features

  • General lay-out of the system and position of the in- and outputs according to customer specification
  • Systems are expandable as a result to modularity
  • Compact design generating minimal system losses
  • Integrated coupler filter combiners are precisely tuned to required center frequencies (also available as single components)
  • Availability of optional on-site installation and support by MIRAD
Switching & Combining Systems
Ku-band 9:2 channel switching and combining system – more information available in References

  • Feed System
  • Feed Network
  • Power Combining Systems

A Typical MIRAD Feed System

For the reception and transmission of microwave signals from and into space

Ka-band feed system integrated into feed can including feed window rain blower
Ka-band feed system integrated into feed can including feed window rain blower

Feed Can

  • Feed tube optional with service doors
  • Rain blower (optional)
  • Feed heating device (optional)
  • Feed flange (customized to the antenna reflector vertex for smooth on-site integration)

Feed Assembly (Orange)

Standardized and custom build models for all frequency bands from 1 GHz up to 70 GHz.

  • Feed horn including feed window (single/double)
  • Tracking coupler (optional)
  • Feed Combiner (linear or circular – switchable optional)

Single bands:

  • L-band
  • S-band
  • C-band
  • X-band
  • Ku-band
  • K-band
  • Ka-band
  • Q-band
  • V-band

Selection of multi bands:

  • L-/X-band
  • S-/K-band
  • S-/S-X-band
  • S-/X-/X-band
  • S-/X-/Ka-band
  • C-/Ku-band
  • X-/X-/K-band
  • Ku-/DBS-band
  • Ka-/Q-/V- band
  • Q-/V-band

Feed Network (Green)

Waveguides to connect the customer defined interfaces to the feed assembly ports – optional with polarization and / or redundancy switching.

More information available in Feed Networks.

Custom Builds

MIRAD feed systems can be adapted to any antenna type or make. We provide feed systems for new and existing

  • Standard antennas 
  • Purpose built antennas

For the latter, MIRAD supplies the reflector design including a precise forecast on expected antenna performance. When designing a feed system it is our policy to apply as many of our standard feed modules as possible, such as the feed combiner or the filters, to minimize project risks and to ensure cost efficiency as well as acceptable delivery times.

Used Antennas

As most used antennas are upgradeable, MIRAD offers

  • Antenna upgrade assessments
  • Feed system design upgrades
  • On-site installation (optional)

Prior to delivery, all of our feed systems are thoroughly tested and documented in detail.

Water cooled X-/ K-band feed system integrated into feed can
Water cooled X-/ K-band feed system integrated into feed can – more information available in References

Adjacent to the feed assembly, MIRAD offers

  • Rx redundancy & testing networks
  • Tx redundancy & power combining networks

The compact networks are designed according to customer requirements with optimized frequency paths to minimize system losses.

Manufactured feed networks are RF & pressure tested prior to delivery. Active RF components (amplifiers) and electronic control devices will either be supplied by the customer (to test the network) or purchased and integrated by MIRAD.

Options

  • Integration of electronic control unit
  • Integration of complete cabling
  • On-site installation
S-band Rx- and Tx-network
S-band Rx redundancy and Tx switching network

A large number of MIRAD multi-channel switching and combining systems are in operation around the world.

Key Features

  • General lay-out of the system and position of the in- and outputs according to customer specification
  • Systems are expandable as a result to modularity
  • Compact design generating minimal system losses
  • Integrated coupler filter combiners are precisely tuned to required center frequencies (also available as single components)
  • Availability of optional on-site installation and support by MIRAD
Switching & Combining Systems
Ku-band 9:2 channel switching and combining system – more information available in References

Engineering

After thorough analysis, our experienced RF Engineers with their advanced simulation skills and tools provide optimal and feasible design proposals as well as the most efficient performance estimations. Recently, the power handling expectations for our systems have notably increased; MIRAD has accrued profound expertise via extensive R&D studies of reliable feasibility analysis for high power applications. Testing and validation is an indispensable element of development for new RF solutions; our testing capabilities and infrastructure are also available for third party systems. Based on the comprehensive experience gained with earth station applications, our engineering team is also in a position to deliver on-board applications.

  • System Design
  • RF Simulation & Reflector Design
  • High Power Applications
  • Testing & Validation

MIRAD Engineering Design Process

The design of our high quality systems and components is complex. It requires a profound RF engineering experience acquired during a considerable amount of time working with MIRAD on similar projects. 

Take a look at the MIRAD engineering design process below.

Whether you have questions regarding antenna sizes, mechanical antenna stability requirements, or reflector compliance with specific frequency bands, our engineers are happy to provide detailed and precise answers.

We Provide:

  • Antenna geometries for the main- and sub-reflector for new ground stations including reflector deformation analysis
  • Antenna performance simulations (e.g. antenna efficiency, radiation pattern, G/T calculations)
  • Definition of the key antenna parameters of existing antennas as a starting point for the feed system design
  • Feasibility assessment of antenna upgrades 
    (e.g. change of frequency bands)
  • Beam waveguide calculation for large ground stations
Antenna Geometry of a Cassegrain Antenna
Antenna Geometry of a Cassegrain Antenna

High transmission power can create several effects that might distort the RF signals. Our engineers recently concluded in-depth multiphysics analysis and simulation of implications of  high power applications of the complete RF path.

For the design of high power feed systems and feed networks, a special focus is required for the analysis of the following physical effects:

  • Heat dissipation / cooling concepts
  • Risks for voltage breakdown

As a result from this analysis, we are able to deliver reliable high power solutions up to 60 kW or even 100 kW (currently in testing phase) for Deep Space Antennas.

Thermal Filter Analysis
Thermal Filter Analysis

In our in-house anechoic chamber (8m x 6m x 6m), MIRAD tests the antenna characteristics of our own systems and prototypes, as well as third party RF products up to 70 GHz. (contact us to check availability and for a quote). Our measurements are three dimensional and in high resolution. The test procedures are software defined for synchronic VNA and hardware-motion controlling.

Our well equipped inventory of measurement tools (for RF and mechanical validation) allows for the execution of any necessary test procedure, and documenting that our deliverables meet – or in many cases – are even better than the agreed upon specifications.

Factory Acceptance Tests are done via telephone or our testing & validation expertise can be witnessed in person.

20120515_MIRAD_CPRTE-244
Anechoic Chamber

  • System Design
  • RF Simulation & Reflector Design
  • High Power Applications
  • Testing & Validation

MIRAD Engineering Design Process

The design of our high quality systems and components is complex. It requires a profound RF engineering experience acquired during a considerable amount of time working with MIRAD on similar projects. 

Take a look at the MIRAD engineering design process below.

Whether you have questions regarding antenna sizes, mechanical antenna stability requirements, or reflector compliance with specific frequency bands, our engineers are happy to provide detailed and precise answers.

We Provide:

  • Antenna geometries for the main- and sub-reflector for new ground stations including reflector deformation analysis
  • Antenna performance simulations (e.g. antenna efficiency, radiation pattern, G/T calculations)
  • Definition of the key antenna parameters of existing antennas as a starting point for the feed system design
  • Feasibility assessment of antenna upgrades 
    (e.g. change of frequency bands)
  • Beam waveguide calculation for large ground stations
Antenna Geometry of a Cassegrain Antenna
Antenna Geometry of a Cassegrain Antenna

High transmission power can create several effects that might distort the RF signals. Our engineers recently concluded in-depth multiphysics analysis and simulation of implications of  high power applications of the complete RF path.

For the design of high power feed systems and feed networks, a special focus is required for the analysis of the following physical effects:

  • Heat dissipation / cooling concepts
  • Risks for voltage breakdown

As a result from this analysis, we are able to deliver reliable high power solutions up to 60 kW or even 100 kW (currently in testing phase) for Deep Space Antennas.

Thermal Filter Analysis
Thermal Filter Analysis

In our in-house anechoic chamber (8m x 6m x 6m), MIRAD tests the antenna characteristics of our own systems and prototypes, as well as third party RF products up to 70 GHz. (contact us to check availability and for a quote). Our measurements are three dimensional and in high resolution. The test procedures are software defined for synchronic VNA and hardware-motion controlling.

Our well equipped inventory of measurement tools (for RF and mechanical validation) allows for the execution of any necessary test procedure, and documenting that our deliverables meet – or in many cases – are even better than the agreed upon specifications.

Factory Acceptance Tests are done via telephone or our testing & validation expertise can be witnessed in person.

20120515_MIRAD_CPRTE-244
Anechoic Chamber

Components

Our passive RF components have been designed on a modular basis allowing easy implementation and are manufactured with our renowned Swiss precision, enabling you to operate your system on the highest possible performance level. We offer several standard solutions, but specialize in customized solutions. The components listed below are only a selection of what we offer. In any case, please contact us.

  • Feed Combiner
  • Waveguides
  • Filter
  • Coupler
  • Terminations
  • Other

Our standard feed combiners often can be found as one key part of our feed systems. Should you consider outsourcing the adaption or upgrade of your feed system entirely, MIRAD is the perfect partner. With our antenna upgrade experience you will get a technically and financially optimized system. However, the feed combiners are also available as stand-alone units for different frequency bands.

Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)
Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)

Feed Combiner Components

4-port Ka-band feed combiner with forced cooling
4-port Ka-band feed combiner with forced cooling
  • Blue: Taper, interface to the circular waveguide
  • Green: Orthomode transducer (OMT), separation of polarization
  • Orange: Diplexers, separation of transmit and receive frequency bands
  • Turquoise: Hybrid couplers, recombination of orthogonal signals to produce circularity

Any component of the feed combiner is available as single component as well. However, in order to get best possible performance a single source solution is recommended.

Popular MIRAD Feed Combiners

Frequency bands:

  • C-band
  • X-band
  • Ku-band / DBS-band
  • Ka-band

Options:

  • 2-port, 4-port and 6-port
  • Linear or circular polarization
  • Straight or folded
  • PIM specification

Please note that the feed combiners are available in a broad range of different types and configurations. Just contact us with your specific requirements and we will provide you with all necessary details immediately. If a standard feed combiner does not meet your specification, our engineering is at your service to design a customized solution.

Another key competences of ours is the design and production of rigid waveguides for all frequencies. Due to our outstanding infrastructure as well as our highly trained workforce we are able to provide, at very short notice as well, customized high quality waveguides.

Key Features

  • Excellent return loss
  • Minimal insertion loss
  • Complex routing
  • Any waveguide size and flange type
  • Short and timely period of supply
  • Our assembly specialists are optionally available for on-site installation
Waveguide Cleaning
Waveguide Cleaning
Waveguide Routing
Waveguide Routing

Whether your specifications are sketched or ready for production is of minor importance. We undertake any necessary design-work, conducted in close cooperation with you and will then manufacture in accordance with our renowned excellent Swiss precision standards. It goes without saying that we deliver any shape, from the simple, straight single component to the highly complex forms of waveguide runs.

MIRAD is proud to have fulfilled every customers technical specifications with precisely designed and manufactured filters, and we strive to continue to do so.

We carry a wide range of standardized products: waveguide and coaxial filters for all typical transmit, receive and harmonic reject filter applications in all RF bands. Furthermore, MIRAD has years of experience in the development and production of filters for channel combination.

Key Features

  • Precise and accurate material simulation
  • Customized combinations of filter-topology for best performance
  • Very low insertion loss
  • Best return loss
  • High stop-band attenuation

In development and production, MIRAD sets high standards through the use of the CNC-machined waveguide structures in split block technique. Our team of highly specialized development engineers, supported by the latest software tools, are keen to challenge your specifications with an elegant and efficient solution that will guarantee electrically and thermally stable filter systems for your daily, uninterrupted use. Do not hesitate, contact us with your specification, however unusual it may be.

Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC
Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC

Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler
Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler

Our wide variety of couplers covers all typical specifications. These high performance products range from simple directional couplers and power splitters/combiners to tailor-made components to meet your individual requirements.

Key Features

  • Exact coupling values
  • High directivity
  • Optimized design in line with your application
  • High precision couplers available

In the development of our standard products, our focus was specifically on the best price-performance ratio. If these couplers do not satisfy your requirements, we are capable of customizing a high quality coupler by combining any necessary coupling value with the best frequency linearity, directivity and return loss in a wide frequency range.

Our wide variety of high grade terminations applicable for small, medium and high power handling as well as high precision measurements, have been developed to enable best possible price-performance ratio for your individual application. The power range of our terminations starts from below 1 W up to 4 kW and above.

Key Features

  • Models with and without forced cooling available
  • High precision terminations for calibration and measurement
  • Excellent return loss
  • Power handling up to 4 kW and above
  • M&C interfaces
  • Control interface compatible to industry standard
Ka-band low power load, C-band medium power load, Ku-band high power load with forced air cooling
Ka-band low power load, C-band medium power load, Ku-band high power load with air cooling

The MIRAD microwave high power terminations are designed to terminate waveguides with a very good return loss within the complete range of waveguide bands. With the integration of the correct termination, the risk of injury through hot surfaces is eliminated. The terminations are pressure tight and outdoor proof. The selection of the correct termination is extremely important to avoid overheating and is driven by the actual power level of your system. Our sales team is more than happy to support you to define the suitable component.

Air Inlet

Soldered C-band air inlet, machined Ku-band air inlet
Soldered C-band air inlet, machined Ku-band air inlet

The MIRAD microwave air inlets are available for all common waveguide sizes and all common flange standards. The air inlets are the indispensible component in every waveguide system and can be combined with an connector defined by the user.

Pressure Window

MIRAD has designed a series of pressure windows optimized for the use in common earth stations where a low overpressure of almost 50 mbar protects the waveguide system against moisture and dirt. Only highest quality grade of materials are used to manufacture each individual pressure window and to maintain the high performance of your entire system. They are available for all common waveguide sizes and flange standards. 

Ku-band and Ka-band pressure windows
Ku-band and Ka-band pressure windows

Feed Window / Radome

In order to prevent moisture and dirt from entering the feed system, the feed horn aperture is closed with a feed window. Depending on the diameter of the aperture, the frequency and the internal overpressure, different materials have to be used. MIRAD can provide you either with a customized pre-cut of your feed window according to your sketch or with sheets of Kapton™, CoreTex™ or Sefar tissue. Do not hesitate to contact us.

  • Feed Combiner
  • Waveguides
  • Filter
  • Coupler
  • Terminations
  • Other

Our standard feed combiners often can be found as one key part of our feed systems. Should you consider outsourcing the adaption or upgrade of your feed system entirely, MIRAD is the perfect partner. With our antenna upgrade experience you will get a technically and financially optimized system. However, the feed combiners are also available as stand-alone units for different frequency bands.

Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)
Ku-band feed combiners (straight 2- / 4-ports, and folded 6-port)

Feed Combiner Components

4-port Ka-band feed combiner with forced cooling
4-port Ka-band feed combiner with forced cooling
  • Blue: Taper, interface to the circular waveguide
  • Green: Orthomode transducer (OMT), separation of polarization
  • Orange: Diplexers, separation of transmit and receive frequency bands
  • Turquoise: Hybrid couplers, recombination of orthogonal signals to produce circularity

Any component of the feed combiner is available as single component as well. However, in order to get best possible performance a single source solution is recommended.

Popular MIRAD Feed Combiners

Frequency bands:

  • C-band
  • X-band
  • Ku-band / DBS-band
  • Ka-band

Options:

  • 2-port, 4-port and 6-port
  • Linear or circular polarization
  • Straight or folded
  • PIM specification

Please note that the feed combiners are available in a broad range of different types and configurations. Just contact us with your specific requirements and we will provide you with all necessary details immediately. If a standard feed combiner does not meet your specification, our engineering is at your service to design a customized solution.

Another key competences of ours is the design and production of rigid waveguides for all frequencies. Due to our outstanding infrastructure as well as our highly trained workforce we are able to provide, at very short notice as well, customized high quality waveguides.

Key Features

  • Excellent return loss
  • Minimal insertion loss
  • Complex routing
  • Any waveguide size and flange type
  • Short and timely period of supply
  • Our assembly specialists are optionally available for on-site installation
Waveguide Cleaning
Waveguide Cleaning
Waveguide Routing
Waveguide Routing

Whether your specifications are sketched or ready for production is of minor importance. We undertake any necessary design-work, conducted in close cooperation with you and will then manufacture in accordance with our renowned excellent Swiss precision standards. It goes without saying that we deliver any shape, from the simple, straight single component to the highly complex forms of waveguide runs.

MIRAD is proud to have fulfilled every customers technical specifications with precisely designed and manufactured filters, and we strive to continue to do so.

We carry a wide range of standardized products: waveguide and coaxial filters for all typical transmit, receive and harmonic reject filter applications in all RF bands. Furthermore, MIRAD has years of experience in the development and production of filters for channel combination.

Key Features

  • Precise and accurate material simulation
  • Customized combinations of filter-topology for best performance
  • Very low insertion loss
  • Best return loss
  • High stop-band attenuation

In development and production, MIRAD sets high standards through the use of the CNC-machined waveguide structures in split block technique. Our team of highly specialized development engineers, supported by the latest software tools, are keen to challenge your specifications with an elegant and efficient solution that will guarantee electrically and thermally stable filter systems for your daily, uninterrupted use. Do not hesitate, contact us with your specification, however unusual it may be.

Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC
Ka-band bandpass filter, Ku-band Tx reject filter, Ku-band Rx reject filter, C-band CFC

Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler
Ka-band multihole coupler, X-band cross-guide coupler, Ku-band hybrid coupler, Ku-band branchline coupler

Our wide variety of couplers covers all typical specifications. These high performance products range from simple directional couplers and power splitters/combiners to tailor-made components to meet your individual requirements.

Key Features

  • Exact coupling values
  • High directivity
  • Optimized design in line with your application
  • High precision couplers available

In the development of our standard products, our focus was specifically on the best price-performance ratio. If these couplers do not satisfy your requirements, we are capable of customizing a high quality coupler by combining any necessary coupling value with the best frequency linearity, directivity and return loss in a wide frequency range.

Our wide variety of high grade terminations applicable for small, medium and high power handling as well as high precision measurements, have been developed to enable best possible price-performance ratio for your individual application. The power range of our terminations starts from below 1 W up to 4 kW and above.

Key Features

  • Models with and without forced cooling available
  • High precision terminations for calibration and measurement
  • Excellent return loss
  • Power handling up to 4 kW and above
  • M&C interfaces
  • Control interface compatible to industry standard
Ka-band low power load, C-band medium power load, Ku-band high power load with forced air cooling
Ka-band low power load, C-band medium power load, Ku-band high power load with air cooling

The MIRAD microwave high power terminations are designed to terminate waveguides with a very good return loss within the complete range of waveguide bands. With the integration of the correct termination, the risk of injury through hot surfaces is eliminated. The terminations are pressure tight and outdoor proof. The selection of the correct termination is extremely important to avoid overheating and is driven by the actual power level of your system. Our sales team is more than happy to support you to define the suitable component.

Air Inlet

Soldered C-band air inlet, machined Ku-band air inlet
Soldered C-band air inlet, machined Ku-band air inlet

The MIRAD microwave air inlets are available for all common waveguide sizes and all common flange standards. The air inlets are the indispensible component in every waveguide system and can be combined with an connector defined by the user.

Pressure Window

MIRAD has designed a series of pressure windows optimized for the use in common earth stations where a low overpressure of almost 50 mbar protects the waveguide system against moisture and dirt. Only highest quality grade of materials are used to manufacture each individual pressure window and to maintain the high performance of your entire system. They are available for all common waveguide sizes and flange standards. 

Ku-band and Ka-band pressure windows
Ku-band and Ka-band pressure windows

Feed Window / Radome

In order to prevent moisture and dirt from entering the feed system, the feed horn aperture is closed with a feed window. Depending on the diameter of the aperture, the frequency and the internal overpressure, different materials have to be used. MIRAD can provide you either with a customized pre-cut of your feed window according to your sketch or with sheets of Kapton™, CoreTex™ or Sefar tissue. Do not hesitate to contact us.

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