This paper presents a novel dual‐band highly efficient power amplifier (PA) design for 5G applications. The presented dual‐band matching network consists of an impedance tuning network and a dual‐band impedance transformer. This structure can not only achieve the precise fundamental and second harmonic control at two 5G bands, but also the excellent dual‐band filtering response. Compared with other dual‐band PAs, it shows better frequency selectivity and wider bandwidth. For demonstration, a dual‐band PA is designed, fabricated, and measured. The measured results display the power added efficiencies of 60% and 47% at 2.5 GHz and 3.5 GHz (bandwidth >150 MHz) under the saturated output power of above 40 dBm, and excellent frequency selectivity with return loss (> 14.7 dB) and stopband rejection (> 25.2 dB).
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