新型连续B/J类功率放大器设计  

Design of New Type Continuous Class B/J Power Amplifier

作　　者：苗瑾超 杨珺菲 钱松 程知群 MIAO Jinchao;YANG Junfei;QIAN Song;CHENG Zhiqun(School of Information Engineering,Xinjiang Institute of Technology,Aksu 843100,Xinjiang,China;National Demonstration Center for Electrical and Electronical Experiment Education,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]新疆理工学院信息工程学院,新疆阿克苏843100 [2]杭州电子科技大学电工电子国家级实验教学示范中心,杭州310018

出　　处：《实验室研究与探索》2024年第5期99-101,148,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(61871169);浙江省基础公益研究计划项目(LZ20F010004)。

摘　　要：为满足无线通信技术对高性能功率放大器的需求,提出一种新型宽带高效率B/J类功率放大器的设计方法。区别于传统连续B/J模式,设计中引入变量因子重塑其时域电压波形表达式,推导出扩展的阻抗设计空间。扩展的阻抗设计空间增加了阻抗匹配的灵活度,拓展了带宽,同时仿真表明可获得与传统连续B/J类功率放大器相同的功率和效率。基于此新型阻抗匹配技术,设计了一款工作频段为1.5~2.5 GHz的GaN HEMT宽带功率放大器。测试结果表明,在该频率范围内,输出功率大于40.6 dBm,漏极效率为72.4%~79.1%,增益为10.6~11.9 dB表明,所提出方法具有有效性.In order to meet the requirements of wireless communication technology for high performance of power amplifier,the paper proposes a new method of designing broadband and high-efficiency Class B/J power amplifiers.Differring from the traditional continuous B/J mode,this design reshapes its time-domain voltage waveform expression by introducing variable factors,and then derives the expanded impedance design space.This expanded impedance design space increases the flexibility of impedance matching,expands the bandwidth,and theoretically obtains the same power and efficiency as traditional continuous class B/J power amplifiers.Based on this new impedance match technology,a broadband power amplifier is proposed and operating frequency is in 1.5-2.5 GHz.Test results show that in the frequency range of 1.5-2.5 GHz,the output power is greater than 40.6 dBm,the drain efficiency is 72.4%-79.1%,and the gain is 10.6-11.9 dB which verifies the effectiveness of the proposed method.

关 键 词：连续类 功率放大器 电压时域波形 阻抗空间 

分 类 号：TN722.75[电子电信—电路与系统]