Selecting RF Power Amplifiers For Military Communications And Electronic Warfare

Explore an engineering overview of how to select RF power amplifiers for military communications and electronic warfare systems. It explains that these applications demand amplifiers with high output power, wide bandwidth, strong linearity, and rugged reliability under harsh field conditions.

It walks through the major modulation techniques used in defense systems—Continuous Wave (CW) for jamming and radar, PSK/QPSK for secure data links, QAM for high-throughput communications, Frequency-Hopping Spread Spectrum (FHSS) for anti-jam resistance, and OFDM for modern tactical networking—describing how each places distinct demands on amplifier design, particularly around linearity and instantaneous bandwidth.

It then details the core performance characteristics engineers should weigh when choosing an amplifier: power density, linearity, efficiency, broadband capability, and thermal management. A dedicated section makes the case for Gallium Nitride on Silicon Carbide (GaN-on-SiC) as the leading semiconductor technology for these applications, citing its compact power density, high efficiency, wide bandwidth, thermal robustness, and superior handling of high peak-to-average power ratio (PAPR) signals.

A frequency band reference chart maps typical military applications—communications, electronic warfare, radar, and SATCOM—to their common operating bands from HF through Ka-band. The content closes with practical selection criteria (frequency range, output power, bandwidth, modulation type, duty cycle, environmental ruggedness) and a table of representative amplifier products spanning these four application areas, from compact SATCOM units to high-power radar amplifiers.