CPW Circulators with Barium Ferrite Thin Films  

作　　者：Yuan Wang Bin Peng Wan-Li Zhang Ke Tan 

机构地区：[1]State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

出　　处：《Journal of Electronic Science and Technology》2010年第4期351-355,共5页电子科技学刊（英文版）

基　　金：supported by the National Basic Research Program of China under Grant No. 61363Z06.1

摘　　要：A miniaturized circulator using barium ferrite films with a coplanar waveguide （CPW） structure is designed and optimized by high frequency electromagnetic field simulations based on finite element methods. The best circulation performance of the film circulator based on 10 pm thick barium ferrite thin films is obtained with an insertion loss of 0.13 dB and an isolation of 22.89 dB around 36.9 GHz. The microwave characteristics of film circulators with CPW and CPW with ground （CPWG） structures have been compared. The influences of the gap between the ground and the signal line, and the ferromagnetic resonance line width on the microwave properties are also studied.A miniaturized circulator using barium ferrite films with a coplanar waveguide （CPW） structure is designed and optimized by high frequency electromagnetic field simulations based on finite element methods. The best circulation performance of the film circulator based on 10 pm thick barium ferrite thin films is obtained with an insertion loss of 0.13 dB and an isolation of 22.89 dB around 36.9 GHz. The microwave characteristics of film circulators with CPW and CPW with ground （CPWG） structures have been compared. The influences of the gap between the ground and the signal line, and the ferromagnetic resonance line width on the microwave properties are also studied.

关 键 词：CIRCULATORS coplanar waveguide millimeter wave passive microwave components. 

分 类 号：TN814[电子电信—信息与通信工程] TM277.051[一般工业技术—材料科学与工程]