基于YIG单晶薄膜的陷波器设计  

Notch Filter Design Based on YIG Single Crystal Thin Film

作　　者：王大勇 燕志刚 安弟曦 李俊 张平川[1] 刘颖力[2] WANG Dayong;YAN Zhigang;AN Dixi;LI Jun;ZHANG Pingchuan;LIU Yingli(The 9th Research Institute of China Electronics Technology Group Corporation, Mianyang 621000, China;School of Electronic Science and Engineering, University of Electronic Science and Technology, Chengdu 610054, China)

机构地区：[1]中国电子科技集团公司第九研究所,四川绵阳621000 [2]电子科技大学电子科学与工程学院,四川成都610054

出　　处：《压电与声光》2021年第1期25-28,共4页Piezoelectrics & Acoustooptics

摘　　要：针对基于环球耦合谐振的钇铁石榴石(YIG)小球陷波器装配调试工艺复杂、不利于多通道集成的问题,提出了一种采用静磁波技术来实现YIG单晶薄膜陷波器结构与设计方法。该文通过对单晶薄膜陷波器工作原理的分析,静磁反向体波的角频率与波数(ω-k)色散特性与微带激励谐振换能器的静磁波激励特性的数值计算及器件仿真优化,设计了调谐工作频段为6~8 GHz的实用化YIG单晶薄膜陷波器。设计仿真与实验结果表明,在6~8 GHz内调谐频段陷波器均能保证良好的通带插损、阻带深度及30 dB阻带带宽等技术指标。To solve the problem that the assembly and debugging process of Yttrium Iron Garnet(YIG)sphere notch filter based on sphere coupled resonance is complex and not conducive to multi-channel integration,a structure and design method of YIG single crystal thin film notch filter implemented by magneto-static wave(MSW)technology is proposed in this paper.A practical YIG single crystal thin film notch filter with the tunable operating frequency range of 6~8 GHz was designed based on analyzing the operating principle of the single crystal thin film notch filter and optimizing the numerical calculation and device simulation of the angular frequency and wave number(ω-k)dispersion characteristics of magnetostatic backward bulk wave and magnetostatic wave excitation characteristics of microstrip excited resonant transducer.The simulation and experimental results show that the notch filter can ensure good pass-band insertion loss,stop-band depth and 30 dB stop-band bandwidth,etc.in the tuning band of 6~8 GHz.

关 键 词：陷波器 钇铁石榴石(YIG)单晶薄膜 静磁反向体波 色散 辐射电阻 

分 类 号：TN713[电子电信—电路与系统] TM22[一般工业技术—材料科学与工程]