Bidirectional RF amplifier generates 16 watts of power

The NuPower Xtender VU4GX02 VHF/UHF bidirectional simplifier module is a small, broadband, high-performance RF [radio-frequency] amplifier that generates 16 watts of RF power across the 225 to 512 MHz frequency range. NuWaves Engineering developed the bidirectional amplifier for extending the communication range of half-duplex transceivers with constant-envelope waveforms (i.e., PSK- and FSK-based modulations such as SOQPSK and GFSK); the part generates 16 watts of RF transmit power (4 W linear). The module accepts a +5 dBm input level and provides 35 dB of transmit gain while operating with 30 percent or better power efficiency at most frequencies. In receive mode, the NuPower Xtender offers a noise figure of 3.5 dB and uses a low-noise amplifier that provides 15 dB of gain.

The NuPower Xtender features manual transmit/receive (T/R) mode selection, coupled with a T/R mode switch time of 2us. With a small form factor (3.8 cubic inches) and gallium nitride (GaN) power amplifier device technology, the module was intended for use in broadband RF telemetry and communication systems that require reliability and minimal size, weight, and power consumption.