Co-design of power amplifier and narrowband filter using high-Q evanescent-mode cavity resonator as the output matching network

Summary form only given, as follows. A unique GaN power amplifier (PA) with an integrated evanescent-mode filter as its output matching network is presented in this paper. This design yields a very narrowband PA response from 1.24–1.275 GHz (2.8%) which is comparable to the bandwidth of typical communication signals. The PA exhibits a state-of-the-art performance of 70% efficiency, 10 dB gain, 30 dBm output power, and second and third harmonic levels of −70 dBc.