电子学报 ›› 2020, Vol. 48 ›› Issue (9): 1864-1867.DOI: 10.3969/j.issn.0372-2112.2020.09.026

• 科研通信 • 上一篇    下一篇

基于悬置线双模谐振器谐波控制型滤波功放

方升, 彭习文, 谢泽明   

  1. 华南理工大学电子与信息学院, 广东广州 510641
  • 收稿日期:2019-07-10 修回日期:2019-10-01 出版日期:2020-09-25 发布日期:2020-09-25
  • 通讯作者: 谢泽明
  • 作者简介:方升 男,1994年6月出生于江西丰城,本科毕业于合肥工业大学,硕士就读于华南理工大学,研究方向为射频电路、功率放大器等.E-mail:450555211@qq.com
    彭习文 男,1994年1月出生于江西九江,本科毕业于江西师范大学,硕士就读于华南理工大学,研究方向为射频电路、功率放大器等.Email:1511611956@qq.com
  • 基金资助:
    国家自然科学基金项目(No.61571194);广州市科技计划项目(No.201707010060)

Harmonic Controlled Filtering Power Amplifiers Based on Suspended Strip-Line Dual Mode Resonators

FANG Sheng, PENG Xi-wen, XIE Ze-ming   

  1. School of Electronics and Information, South China University of Technology, Guangzhou, Guangdong 510641, China
  • Received:2019-07-10 Revised:2019-10-01 Online:2020-09-25 Published:2020-09-25

摘要: 为了实现高效率的射频滤波功率放大器(filtering power amplifier),将基于悬置线的截线加载谐振器(stub-loaded resonator)带通滤波器的输入阻抗直接匹配到射频功放管CGH40010F的最佳基波阻抗和谐波阻抗,实现射频功率放大器与滤波器的联合设计,使滤波器同时实现了滤波、阻抗匹配和谐波控制的功能,避免了额外的输出匹配结构,实现了结构紧凑、具有滤波功能的高效率谐波控制型射频功放.实测结果表明在中心频率2.45GHz处,其输出功率约为40dBm,最大电源附加效率(power added efficiency)为76.9%,同时具有良好的滤波特性.

关键词: 射频功率放大器, F类功放, 滤波功放, 多模滤波器, 悬置带线, 电源附加效率, 负载阻抗, 谐波控制

Abstract: To implement a highly efficient radio frequency (RF) filtering power amplifier (FPA),a harmonic controlled power amplifier (PA) and a band pass filter are jointly designed.The filter uses a multi-mode stub-loaded resonator (SLR) based on suspended strip-lines.The input impedance of the filter matches to the optimal fundamental and harmonic impedances of the RF power transistor of the PA,CGH40010F.No extra matching network is needed.The filter implements the functions of filtering, output matching,and harmonic controlling simultaneously,resulting in a compact and efficient harmonic controlled FPA.Measurements show that the FPA is with a good filtering characteristic and is with a maximum output power of 40 dBm and a power added efficiency (PAE) of 76.9% at 2.45GHz.

Key words: RF power amplifiers, class F power amplifiers, filtering power amplifiers, multimode filters, suspended strip-lines, power added efficiency, load impedance, harmonic controlling

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