Radio Frequency Amplifier Modules (RFAM)


RF amplifier modules are indispensable part of any high-power system/transmitter. The purpose of the amplifier is to boost the power of the low-level RF input signal to energize a high power device/load. For RF system based on the cutting-edge technology of solid-state devices, such modules are required in large numbers due to divide-amplify-combine architecture, used therein. Unlike conventional operating modes, the present amplifier modules were designed to operate in advanced and efficient harmonic tuned modes (class J and class F) for delivering 500 W CW and 1.5 kW pulse power in UHF band. Harmonically tuned modes are superset of conventional tuned load operating modes. The fact, that hundreds of such modules are required in kW level amplifiers, makes it necessary to explore such efficient operating modes. These modules, appropriately designed with the planar impedance matching networks and 50 V DC bias circuits, are water cooled and compact thereby optimizing space requirement, improving life.


The sensor has been developed on the above integrated scheme and offers many advantages:

  • Modular and scalable
  • High operational life
  • Graceful degradation
  • Compact form factor
  • Absence of high voltage
  • No requirement of vacuum