金属光子晶体高功率微波模式转换器冷测研究  

Cold test of metallic photonic crystal high power microwave mode converter

作　　者：徐莎[1] 张勇[1] 王冬[1] 施美友[1] 秦奋[1] 文杰[1] 

机构地区：[1]中国工程物理研究院应用电子学研究所高功率微波技术重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2014年第8期171-174,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院科学技术发展基金项目(2012B0402066);高功率微波技术重点实验室基金项目(HAK-2013HPM-03)

摘　　要：研究了同轴传输线中金属光子晶体的电磁特性,在此基础上优化了一种适用于窄带高功率微波源系统的金属光子晶体TEM-TE11模式转换器。该结构通过沿传输线角向部分填充的金属光子晶体实现移相。采用数值仿真程序对L波段模式转换器进行计算,在1.57GHz中心频率上,模式转换器转换效率为99%;在1.533～1.609GHz频率范围内,模式转换器效率大于90%,相对带宽4.8%。加工了TEM模式激励器和辐射天线,并在微波暗室对模式转换器进行了小信号测试,验证了模式转换器的性能。A metallic photonic crystal loaded transmission line is studied, and a metallic photonic crystal type TEM-TE11 mode converter which is suitable for narrow band high power microwave application is designed according to its electromagnetic properties. Metallic photonic crystal is partially filled along azimuthal direction in the device to achieve phase-shifting. A three- row structure is designed and simulated by commercial software CST Microwave Studio. The simulation results show that its con- version efficiency is 99% at the center frequency 1.57 GHz. In the frequency range of 1. 533-1. 609 GHz, the conversion efficiency exceeds 90 %, with a corresponding bandwidth of 4.8 %. A TEM mode excitation and a horn antenna is fabricated and the per- formance of mode converter is tested. The results confirm the design.

关 键 词：高功率微波 模式转换器 冷测实验 金属光子晶体 色散特性 

分 类 号：TN61[电子电信—电路与系统] O734[理学—晶体学]