一种小型化超宽带同轴巴伦的设计与实现  

Design and implementation of a miniaturised ultra-wideband coaxial balun

作　　者：张新林 郗松岳 姜博 陈鹏 黄星[1] 路宏敏 Zhang Xinlin;Xi Songyue;Jiang Bo;Chen Peng;Huang Xing;Lu Hongmin(School of Electronic Engineering,Xidian University,Xi’an 710071,China;Xi’an XICE Test Technology Co.Ltd.,Xi’an 710065,China;Northwest Institute of Nuclear Technology,Xi’an 710024,China)

机构地区：[1]西安电子科技大学电子工程学院,西安710071 [2]西安西测测试技术股份有限公司,西安710065 [3]西北核技术研究所,西安710024

出　　处：《强激光与粒子束》2024年第8期57-62,共6页High Power Laser and Particle Beams

基　　金：国防基础科研项目(MKF20230377)。

摘　　要：集总参数巴伦尺寸小且易集成,但其不能承受较大功率,且频带较窄;分布参数类同轴巴伦因其具有宽频带、低损耗、大功率容量等特点,目前被广泛应用于大功率辐照天线的差分馈电与阻抗匹配的设计中。针对某试验系统对宽频带大功率辐照天线的工程应用需求,基于非整数阻抗变化比的同轴巴伦设计方法,设计与实现了一款加载铁氧体磁环的阻抗变换比1∶2.25的同轴巴伦。仿真结果与实测结果表明,该巴伦频带为0.01~1.30 GHz,巴伦相位不平衡度在180°±5°以内,幅度不平衡度在±1 dB以内,两路插损均小于1.5 dB。仿真分析了巴伦在500 W功率馈电下的电性能,验证了其功率容量。Baluns with lumped parameters are compact and easily integrated,but they have limitations in terms of power handling and bandwidth.On the other hand,baluns with distributed parameters,such as coaxial baluns,are extensively utilized in the design of high-power irradiation antennas for differential feeding and impedance matching,owing to their wide bandwidth,low loss,and high power capacity.To address the engineering requirements of wideband high-power irradiation antennas in a specific experimental system,a coaxial balun with an impedance transformation ratio of 1∶2.25 loaded with a ferrite magnetic ring is designed and realised based on the coaxial balun design method with any non-integer impedance transformation ratio.Simulation and measurement results demonstrate that the balun operates within the frequency range of 0.01−1.30 GHz,with a phase imbalance within±5°of 180°and an amplitude imbalance within±1 dB.The insertion losses of both paths are below 1.5 dB.The electrical performance of the balun at 500 W power feed is simulated and analysed to verify its power capacity.

关 键 词：同轴巴伦 超宽带 大功率 铁氧体磁环 平衡电路 

分 类 号：TN81[电子电信—信息与通信工程]