Broadband PA Design with A Twice Optimization Method Using Bayesian Algorithm

Abstract

In this paper, a broadband power amplifier (PA) using 10 W GaN transistors is designed, with the operating frequency band between 2 GHz to 3 GHz. The initial design of the PA is firstly optimized with the optimizer embedded in advanced design system (ADS), after that, it was further optimized using the proposed Bayesian optimization (BO) algorithm. The detail design and optimization procedure are given, and the optimized results are analyzed. The PA obtained by the twice optimization can achieve an output power (Pout) greater than 41.1 dBm, a power added efficiency (PAE) higher than 62.5 %, and a gain greater than 11.1 dB in the operating band, which is a significant improvement compared with the performance of the initial designed PA.