基于七换能器结构的Band3-Rx滤波器产品设计  

Design of Band3-Rx Filter Based on 7-IDT Structure

作　　者：史向龙 陈晓阳 张俊茜 苏波 于倩至 孙伟彬 SHI Xianglong;CHEN Xiaoyang;ZHANG Junxi;SU Bo;YU Qianzhi;SUN Weibin(Beijing Institute of Radio Measurement,Beijing 100854,China)

机构地区：[1]北京无线电测量研究所,北京100854

出　　处：《压电与声光》2022年第2期230-233,共4页Piezoelectrics & Acoustooptics

摘　　要：该文介绍了一种用于Band3频段接收端的声表面波滤波器的研制过程。为满足滤波器的大宽带性能及阻带低端的高选择性要求,采用七阶叉指换能器混合结构的耦合模式模型进行自动优化设计和多次优化迭代,并利用有限元法/边界元法(FEM/BEM)软件进行精确的声学验证,最后通过实验验证了仿真结果的有效性。This paper introduces the development process of a surface acoustic wave(SAW)filter for Band3 receiver.In order to satisfy the large-bandwidth performance of the filter and the high selectivity at the low end of the stopband,a 7-interdigital transducer(7-IDT)hybrid structure is used,and the coupling of mode model is used for automatic optimization design and multiple optimization iterations.And use finite element method/boundary element method(FEM/BEM)software to carry out accurate acoustic verification,and finally through the test to verify the effectiveness of the simulation results.

关 键 词：声表面波(SAW)滤波器 Band3频段 七阶换能器 谐振器 有限元法/边界元法(FEM/BEM) 

分 类 号：TN713[电子电信—电路与系统] TN65