A Concurrent 2.2/3.9-GHz Dual-Band GaN Power Amplifier

This paper presents an efficient concurrent dual-band 2.2/3.9GHz hybrid power amplifier, designed with a 0.25- μm Qorvo 15W GaN HEMT. In non-concurrent CW mode, peak PAEs of 74.4% and 57.7% are measured at the two frequencies, respectively, with 41.7 and 41.2dBm output power and 13.9 and 9.37dB gain at 3 and 1dB compression. When two concurrent 10-MHz 6-dB PAPR multitone signals are amplified, the average PAE reaches 55%, with ACLRs of -42.5 and -43.3dBc in the two bands obtained after digital pre-distortion.