小型化微带环行器的设计与仿真彭龙.pdf

工艺·技术·应用 小型化微带环行器的设计与仿真 1 1 1 1 2 彭 龙 ，涂小强 ，李乐中 ，朱兴华 ，李元勋 （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 ） 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。 关键词：微带环行器；铁氧体基片；小型化；HFSS 仿真 中图分类号：TN621 文献标识码：A 文章编号：1001-3830(2012)05-0031-04 Design and simulation of miniaturized microstrip circulator 1 1 1 1 2 PENG Long , TU Xiao-qiang , LI Le-zhong , ZHU Xing-hua , LI Yuan-xun 1. College of Optoelectronics Technology, Chengdu University of Information Technology, Chengdu 610225, China; 2. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China Abstract: 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 bandw