4&5kWGaN Pulsed Transmitters for C- and X-Band

摘要

BFHIC Corporation has developed solid-state pulsed transmittersfor C- and X-Band radar, providing4 kW output power at C-Band and 5 kW at X-Band. The transmitters use RFHIC's own GaN power devices in a redundant power amplifier (PA) architecture, which provides long lifetimes with "soft" failure. The systems are cooled using forced air.C-BAND TRANSMITTERThe C-Band transmitter, model RRT54594K0-66, was designed for maritime, surveillance and weather radar applications between 5.4 and 5.9 GHz. The transmitter delivers a minimum of 4 kW peak pulsed power with 31 percent powerconsumption efficiency (see Figure 1). It handles pulse widths of 1 to 100 us and up to 10 percent duty cycle, with typical pulse drop of 0.5 dB or less and rise and fall times less than 100 ns. The transmitter has excellent pulse fidelity, with pulse stability of 55 dB and spurious signals no greater than 40 dBc in the operating band. An input power of at least 15 dBm is sufficient to drive the transmitter to rated power.