中圖分類號(hào)：TN92 文獻(xiàn)標(biāo)志碼：A DOI: 10.16157/j.issn.0258-7998.223374 中文引用格式： 劉天韻，劉少斌. 基于諧波抑制的小型化高效率功率放大器設(shè)計(jì)[J]. 電子技術(shù)應(yīng)用，2023，49(2)：97-101. 英文引用格式： Liu Tianyun，Liu Shaobin. Design of miniaturized high efficiency power amplifier based on harmonic suppression[J]. Application of Electronic Technique，2023，49(2)：97-101.
Design of miniaturized high efficiency power amplifier based on harmonic suppression
Liu Tianyun，Liu Shaobin
College of Electronic and Information Engineering， Nanjing University of Aeronautics and Astronautics， Nanjing 211100， China
Abstract： To overcome conventional VHF power amplifiers′ shortcomings of bulky size, low efficiency, and EM interferences due to output harmonics, a miniaturized, high power and high efficiency power amplifier working in VHF band is designed by using lumped parameter elements in this paper. In this work, multiple series LC resonators are introduced into the output matching circuit of the power amplifier, with effectively suppressed harmonic components, improved linearity and efficiency, as well as improved electromagnetic compatibility of the power amplifier. Finally, the physical test results show that the saturated output power of the power amplifier is about 44.9 dBm, the saturated power gain is 14 dB, and the power added efficiency is 62%. With its excellent performance, it has good practical engineering application value and can be widely used in aviation, aerospace and other fields.
Key words : power amplifier；harmonic suppression；high efficiency；miniaturization；VHF band
