摘要
为解决现有同轴线夹具测试设备无法满足材料电磁脉冲屏蔽效能时域测试的宽频带要求等问题,在对同轴内外导体尺寸和过渡段进行分析的基础上,使用粒子群优化算法结合电磁场数值分析软件对支撑介质进行了优化设计,研制了一种宽带同轴线夹具测试装置.实测结果表明:所研制的同轴线夹具装置,回波损耗在6.4GHz以下小于-20dB;将材料屏蔽效能的测试频段上限最低扩展到6.4GHz的同时,还保证了低频下限可达直流;测试所需的材料试样更小,曲线更平滑.
A broadband coaxial transmission line holder testing device was devel-oped for existing testing equipment cannot meet the requirement of SE broadband test of shielding materials against electromagnetic pulse in time-domain. Firstly, the dimension of coaxial inner and outer conductors and the transition section were ana lyzed. Then, the support medium of coaxial transmission line holder was optimized by using the particle swarm optimization algorithm combined with the electromag- netic field numerical analysis software. Measurement results show that the return loss of the developed coaxial transmission line holder device is less than -20 dB be-low the 6.4 GHz. The broadband coaxial transmission line holder not only extends the high-frequency limitation to 6.4 GHz,but also ensures the low-frequency up to DC. Testing materials sample can be smaller,and the test curve is smoother.
出处
《电波科学学报》
EI
CSCD
北大核心
2013年第4期788-793,共6页
Chinese Journal of Radio Science
基金
国家自然科学基金资助项目(No.51177174
61001050)
关键词
屏蔽效能
同轴线夹具
屏蔽材料
粒子群优化
shielding effectiveness
transmission line holder
shielding materials
particle swarm optimization
