A Flexible Automated Design Method for Broadband Matching Networks in Power Amplifiers

作者：Yuchen Wei, Jihu Li, D.C. Cai, Fan‐Yi Meng, Nam‐Young Kim, Yongle Wu, Cong Wang · 发表于：IEEE Transactions on Microwave Theory and Techniques · 年份：2025 · DOI：10.1109/tmtt.2025.3535935 · 被引用次数：6 · 研究领域：Advanced Power Amplifier Design、Microwave Engineering and Waveguides、Radio Frequency Integrated Circuit Design

This article presents an automated design method for matching networks (MNs) tailored for power amplifiers (PAs) operating across multioctave bandwidths. Designers are required to input simulated or measured load—pull data, alongside specifications for operating bandwidth, output power ($P_{\mathrm {out}}$), power-added efficiency (PAE), and output power flatness. The proposed algorithm reformulates the matching problem as a spatial geometry challenge, incorporating a novel error function, a data modeling approach, and an enhanced simulated annealing (SA) algorithm. This framework facilitates the efficient design of a flat output MN (OMN) that adheres to specified criteria while optimizing both$P_{\mathrm {out}}$and PAE within the defined bandwidth. The effectiveness of this method is demonstrated through the design of a multioctave PA operating between 0.5 and 4.0 GHz. Under large-signal excitation of 30 dBm, the PA achieved a$P_{\mathrm {out}}$ranging from 40.5 to 42.5 dBm, with a minimum PAE of 55% and a power gain exceeding 10 dB.