A 9 W C-band MMICs combined power amplifier

The design, fabrication and performance of a two-stage C-band MMIC power amplifier is reported in this paper. The MMIC contains monolithic input and interstage matching. The matching at the output is realized by using off-chip circuitry. The amplifier delivers more than 36.6 dBm output power with 18.6 dB gain and 34% power added efficiency (PAE) across the band of 5.2-5.8 GHz with a CW signal applied. A 2-chip combined power amplifier demonstrates output power of 39.6 dBm (9 W), with 18.6 dB gain and 32% PAE over the same band.