通讯用高基频带通声表面波滤波器的设计  

Design on the High Fundamental Frequency SAWF for Communication

作　　者：许四科[1] 刘刚[1] 高益[1] 于军[1] 

机构地区：[1]华中科技大学电子科学与技术系,湖北武汉430074

出　　处：《压电与声光》2006年第2期127-129,共3页Piezoelectrics & Acoustooptics

摘　　要：简述了声表面波滤波器当前的发展,讨论了单端谐振型声表面波带通滤波器设计原理和设计要点,得到了一种较好的设计方案,并给出了主要参数的推导过程。通过对滤波器滤波特性影响因素的分析,改进了谐振电路结构和参数,并成功设计了中心频率为902.5 MHz,带宽为25 MHz的声表面波滤波器。The paper describes current development of SAWF. The basic design principles and key points for SAWF bandpass filters using one-port SAW resonaters were discussed and a good design project was got. Many key parameters were concluded. Through disscussing the important factors that influence the filter＇s characteristcs and improving on the structure of resonator circuit, a SAWF with center frequency of 902.5 MHz and bandwidth of 25 MHz has been designed successfully.

关 键 词：谐振器 声表面波滤波器 插入损耗 

分 类 号：TN65[电子电信—电路与系统]