一种应用于2.4 GHz系统的F类功率放大器An F class power amplifier applied to 2.4 GHz system
周正轩,黄瀚熙,刘雁朋,章国豪,刘祖华
摘要(Abstract)：
基于0.5μm Ga As PHEMT工艺,设计一款能应用于2.4 GHz ISM频段的WLAN 802.11b/g协议功率放大器。输出级采用负载线匹配的设计方法,并嵌入了对奇次谐波回收,偶次谐波抑制的网络,使之工作在F类,整机获得了较高附加效率。提出一种匹配计算方法与电路结构,兼顾输出功率和效率最大化,可对功率输出级进行优化匹配设计。该功放工作电压为5 V,仿真结果表明:在2.4 GHz频段内,1 d B压缩点时的输出功率为31.7 d Bm,输出效率为51.8%,功率增益大于35 d B,对高阶偶次谐波抑制大于47 d B,对低阶奇次谐波进行了回收,获得了高效率。
关键词(KeyWords)： PHEMT工艺;F类;功率放大器;负载线匹配;谐波抑制;功率增益
基金项目(Foundation): 第5代移动通信用的毫米波核心芯片的研发(501170066)~~
作者(Author): 周正轩,黄瀚熙,刘雁朋,章国豪,刘祖华
DOI: 10.16652/j.issn.1004-373x.2018.18.008
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