摘要
为在微波波段实现宽带大功率合成输出,设计并研制了一种新型大功率、宽带四路矩形波导TE_(10)模到圆波导TE_(01)模模式变换功率合成器。该模式变换功率合成器由两部分组成,分别是四路矩形波导TE_(10)模合成变换到十字波导TE_(22)模的结构,以及十字波导TE_(22)模变换到过模圆波导TE_(01)模的结构。仿真结果表明,在15.2~18.2 GHz的Ku波段内,TE_(10)-TE_(01)模式合成转化效率大于99.4%,最大可承受1.6 MW的脉冲功率输出。实验验证样品的背靠背冷测实验表明,该模式变换功率合成器在15.2~18.2 GHz频段内的最低合成效率为94%。仿真结果和冷测实验结果表明,该模式变换功率合成器具有工作带宽大、合成效率高、功率容量大的特点,可以较好地解决微波及毫米低端波段宽带大功率TE_(01)模的模式变换和合成输出问题。
[Background]In modern radar and communication systems,power amplifiers determine the system's transmission output power and bandwidth,thereby affecting key performance metrics such as operating range and resolution.As operating frequencies continue to rise,the output power of a single power amplifier device is limited and cannot fully meet the current demands of radar and communication systems for broadband and high power.Therefore,it is necessary to design power synthesizer to achieve multi-channel power synthesis.[Purpose]In order to achieve broadband high-power synthesis output in the microwave bands,this paper presents a novel high-power,broadband four-way rectangular waveguide TE_(10)mode to circular waveguide TE_(01)mode conversion power synthesizer.[Methods]This mode conversion power synthesizer consists of two parts,namely the structure of four rectangular waveguide TE_(10)mode synthesis and transformation to cross waveguide TE_(22)mode,and the structure of cross waveguide TE_(22)mode transformation to overmoded circular waveguide TE_(01)mode.[Results]The simulation results show that in the Ku-band of 15.2−18.2 GHz,the synthesis efficiency of TE_(10)-TE_(01)mode is greater than 99.4%,and it can withstand a maximum pulse power output of 1.6 MW.The back-to-back cold test of the experimental verification sample shows that the lowest synthesis efficiency of the power synthesizer in the frequency band of 15.2−18.2 GHz is 94%.[Conclusions]The simulation results and cold test show that the mode conversion power synthesizer has the characteristics of wide working bandwidth,high synthesis efficiency,and high power capacity,which can effectively solve the problem of high-power synthesis output in microwave and millimeter-wave bands.
作者
蔡茂
郑智文
徐勇
刘承让
程宇奇
周星宇
李金帅
魏彦玉
蔡金赤
Cai Mao;Zheng Zhiwen;Xu Yong;Liu Chengrang;Cheng Yuqi;Zhou Xingyu;Li Jinshuai;Wei Yanyu;Cai Jinchi(School of Electronic Science and Engineering,Sichuan Provincial Institute for Vacuum Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China;Beijing Vacuum Electronics Research Institute,Beijing 100015,China)
出处
《强激光与粒子束》
北大核心
2025年第9期33-38,共6页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(62171108)
中国电子科技集团公司第十二研究所项目(K2301287)。
关键词
功率合成
模式变换
KU波段
过模圆波导
高功率微波
power synthesis
mode converter
Ku-band
oversized circular waveguide
high power microwave
