电源学报2024，Vol.22Issue(2)：421-430,10.DOI:10.13234/j.issn.2095-2805.2024.2.421
一种基于功率合成器和功率分配器的2.45 GHz功率放大器
Research on 2.45 GHz Power Amplifier Based on Power Synthesizer and Power Splitter
李钰梁 1杨桢 1李艳 1王宇宁1
作者信息
- 1. 辽宁工程技术大学电气与控制工程学院,葫芦岛 125105
- 折叠
摘要
Abstract
The existing power amplifier cannot strike a balance among aspects such as its output efficiency,output power and linearity.To solve this problem,on the basis of a three-level cascade amplification method,a kind of AB class RE power amplifier based on a power synthesizer and a power splitter is proposed.Aimed at the problems of linearity and gain,the band-pass matching and T-network matching techniques are used to optimize the design of the pre-driver circuit.The problem that the output power of the final amplifier is too large is solved by using the power synthesis technique,and the stability and efficiency of the power amplifier are guaranteed.To prevent the temperature of the power amplifier from being too high,the thermal characteristics of the power amplifier cavity are analyzed.The highest temperature is 81℃,which can make the power amplifier get a good cooling.At room temperature,the RF power amplifier has an output power of 47 dBm,an amplification gain of 42 dB and a maximum power added efficiency of more than 45％at a central frequency point of 2.45 GHz.The test results were close to simulation results,indicating that the research in this paper can provide some guidance for the subsequent research and design of amplifiers.关键词
无线通信/射频功率放大器/功率合成器/功率分配器Key words
Wireless communication/RF power amplifier/power synthesizer/power splitter分类
信息技术与安全科学引用本文复制引用
李钰梁,杨桢,李艳,王宇宁..一种基于功率合成器和功率分配器的2.45 GHz功率放大器[J].电源学报,2024,22(2):421-430,10.
