MPT Inc. – Microwave Products and Technology


T/R Modules are the component that exists in the front end of an active electronic scanned array (AESA). It provides a functionality that’s required for the antenna to be able to scan toward a target or in a communications array and allows the link to be maintained.


20 Years Experience

Your phased array program requires a T/R module solution that will meet your customer’s requirements. There is a select group of companies that can successfully execute on at T/R module program. Don’t trust your program to a supplier without the proper experience. Our team of engineers has been developing T/R modules since 1990, with a successful track record for Tile Modules and brick modules.

3 examples of typical duplexers used in T/R modules

Simplified example of a typical  Transmit/Recieve module front end

T/R Modules Offer a Unique Set of Challenges

This is due to the combination of performance level and environmental survivability requirements. Some of the challenges faced in T/R modules are:

Most T/R modules operate above 5GHz with most operating somewhere in the range of 10-30GHz. At these frequencies, packaging is much more difficult. Distributed effects begin to dominate.

The power dissipation requirements can be significant. Power density can be as high as 1KW/cm2 or more. Such power densities require the use of solutions that can pull away the heat quickly and efficiently.

Closely related to the thermal issues are the output power requirements per element. The output power can be 10-20W or more per element with High Power Amplifier efficiencies in the 30-40% for most amplifiers.

Most T/R modules must be hermetic. This can add complexity to the packaging required. Issues such as Hydrogen Poisoning drive the use of Hydrogen getters. The temperature range requires the use of materials and processing, which will result in a reliable solution.

Most modules require a gain of 40-50dB, which can lead to oscillations. Special attention must be paid to module layout.

The electrical interconnects and transitions can be the most challenging requirement. They must carry the radar signals without degrading electrical performance. At the same time, they need to handle bandwidth, reliability, cost, alignment issues and vibration. MPT is uniquely experienced to fully execute on these requirements to achieve a balanced design that will achieve your program requirements.

Typical Phased Array T/R Module

The beam steering is achieved with the phase shifter and the antenna pattern is controlled by the attenuator.


Here are some frequently asked questions about Down Converters. If you have a specific question please reach out to us here and we’d be more than happy to help. 

The component that exists in the front end of an active electronic scanned array (AESA) it provides a functionality that’s required for the antenna to be able to scan toward a target or in a communications array and allows the link to be maintained.

T/R Modules are the heart of phased arrays. They are 80% of the overall cost of some phased arrays. They provide the phase shift that is required to steer the beam electronically and the higher power amplifier to increase the transmit signal. They also contain the low noise amplifier that provides the sensitivity level that is required for these systems. Therefore, T/R modules are a critical part to modern phased array radar and communication systems.

MPT has a specialty in T/R Modules. We offer solutions from low frequencies such as L band, S band, C band, X band, and all the way up to Ka Band and 40GHz. We’re also developing components and other solutions at lower frequencies. In addition, we are providing solutions to our customers for integrated circuits and other parts of these T/R modules.

Contact MPT today to experience the benefits of the MPT process.