RF AMPLIFIER MODULE
RF AMPLIFIER MODULE
RF Solid Sate Amplifier Modules are a major part of any high-power system/transmitter. The purpose of the RF 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 50V DC bias circuits, are water cooled and compact thereby optimizing space requirement, improving life.
The radio frequency power amplifier (PA) modules are key component in various commercial and industrial applications. Unparalleled advantages of solid-state technology have made transistor-based RF amplifier a promising candidate. Such transistor with moderate continuous wave (CW) power level (~ 100-800 W), appropriately designed with the impedance matching networks and bias circuits, takes the form of a power amplifier module. For achieving hundreds of kW of RF power, multiple power amplifier modules are suitably arranged in multi-stage divide and combine architecture along with power combiners, dividers and directional couplers. The potential advantages claimed for high-power solid-state amplifiers are its long failure-free life, low
bias voltage, no risk of X-rays and electric shock, graceful degradation and low projected volume-production costs.
Applications:
- Cellular Base Stations
- Military Radar Communications
- Global Positioning Systems
- Medical Instrumentation
