小型化微带环行器的设计与仿真  

Design and simulation of miniaturized microstrip circulator

作　　者：彭龙[1] 涂小强[1] 李乐中[1] 朱兴华[1] 李元勋[2] 

机构地区：[1]成都信息工程学院光电技术学院,四川成都610225 [2]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《磁性材料及器件》2012年第5期31-34,47,共5页Journal of Magnetic Materials and Devices

摘　　要：为了降低微带环行器的平面尺寸,满足器件小型化需求,采用三维电磁仿真软件HFSS设计了不同结构(单Y结、双Y结和鱼刺结)的微带环行器。仿真结果表明:与单Y结和双Y结微带环行器相比,鱼刺结微带环行器可以显著减小器件的平面尺寸,提高铁氧体基片的有效使用面积。在中心频率处,鱼刺结微带环行器的反射、隔离度和插入损耗分别为33.8、48.6和0.17 dB,电压驻波比为1.05,带宽高于300 MHz,满足器件的性能要求。In order to decrease the plane dimension and meet the demand of miniaturization, microstrip circulators of different structure （single-Y junction, common dual-Y junction, and fish-bone junction） were designed by 3D electromagnetic simulation software HFSS. The simulation results showed that the fish-bone junction microstrip circulator has a smaller plane dimension and more effective area of ferrite substrate compared with single-Y and common dual-Y junction one. At the center frequency, the fish-bone type microstrip circulator exhibits a reflection of 33.8 dB, isolation of 48.6 dB, insertion loss of 0.17 dB, VSWR of 1.05 and bandwidth over 300 MHz, which meet the performance requirements of the circulator.

关 键 词：微带环行器 铁氧体基片 小型化 HFSS仿真 

分 类 号：TN621[电子电信—电路与系统]