Shichang Zhong

Mar 13, 2024 | mdpi.com | Renyi Li |Chen Ge |Chenwei Liang |Shichang Zhong

1. IntroductionFifth-generation communication technology (5G) adopts sophisticated modulation techniques such as QAM (quadrature amplitude modulation) and OFDM (orthogonal frequency division multiplexing), resulting in a high peak-to-average power ratio (PAPR) in its signal waveform [1,2]. Doherty power amplifiers can maintain high efficiency both in saturation and power back-off, making them suitable for handling 5G communication signals [3].