Design of high frequency broadband low insertion loss SAW filter at 3.5 GHz

作     者：Wang Wei Zhang Ying Wang Fang Wu Hao Ding Hui Xia Xu Wang Guanyu Xie Yingtao Wang Wei;Zhang Ying;Wang Fang;Wu Hao;Ding Hui;Xia Xu;Wang Guanyu;Xie Yingtao

作者机构：School of Optoelectronics Engineering/International Semiconductor CollegeChongqing University of Posts and TelecommunicationsChongqing 400065China 

出 版 物：《The Journal of China Universities of Posts and Telecommunications》 (中国邮电高校学报（英文版）)

年 卷 期：2024年第31卷第2期

页      面：55-61页

核心收录：

学科分类：080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

主　　题：surface acoustic wave(SAW) electrode spurious response mirror T-structure 

摘      要：With the wide application of the fifth-generation mobile communication system(5G)technology,wireless communication equipment tends to develop in miniaturization,high frequency,and low *** this paper,a surface acoustic wave(SAW)filter with a center frequency of 3.5 GHz was ***,the acoustic waveguide structure of the longitudinal leaky SAW(LLSAW)excitation is determined,and the two-dimensional(2D)theoretical model of the device is established by COMSOL ***,the influence of electrode parameters on the performance of the device is studied,and the electrode parameters are optimized on this *** setting the device structure parameters reasonably,the spurious in the passband can be effectively ***,the center frequency of the mirror T-structure LLSAW filter is 3.536 GHz,the insertion loss is-1.414 dB,the bandwidth of-3 dB is 276 MHz,and the out-of-band rejection is greater than-30 dB.