空天预警研究学报2026，Vol.40Issue(4)：308-312,5.DOI:10.3969/j.issn.2097-180X.2026.04.014
一种补偿实部阻抗的宽带Doherty功率放大器设计
A broadband Doherty power amplifier design for compensating real-part impedance
摘要
Abstract
To solve the problem of insufficient bandwidth caused by the frequency dispersion effect of the im-pedance converter in the main power amplifier of the traditional Doherty power amplifiers,a broadband Doherty power amplifier for compensating real-part impedance is designed.By adding a quarter-wavelength transmission line to the output matching circuit of the auxiliary power amplifier,the real-part impedance of the edge frequen-cies on both sides of the working frequency band of the main power amplifier is compensated,thereby suppress-ing the decline in working efficiency and increasing the bandwidth.Simulation results are shown as follows:The designed broadband Doherty power amplifier operates in the frequency band of 1.5-2.5 GHz,with a saturated out-put power from 43.6 dBm to 44.2 dBm.The drain efficiency and gain at the saturated output power reach 50.8%-62.1%and 9.6-10.2 dB,respectively,and the drain efficiency under 6 dB power backoff is 46.9%-60.3%.关键词
Doherty功率放大器/频率色散效应/主/辅助功率放大器/阻抗变换器/实部阻抗补偿Key words
Doherty power amplifier/frequency dispersion effect/main/auxiliary power amplifier/imped-ance converter/real-part impedance compensation分类
信息技术与安全科学引用本文复制引用
魏正华,叶小兰..一种补偿实部阻抗的宽带Doherty功率放大器设计[J].空天预警研究学报,2026,40(4):308-312,5.基金项目
湖南省教育厅科学研究项目(25C1711),长沙民政职业技术学院校级自科项目(26mypy23) （25C1711）
