窄带、高矩形度声表面波滤波器的研制  

Development of A Narrow Band SAW Filter with High Rectangle Factor

作　　者：傅金桥[1] 曹亮[1] 肖燕[1] 黄广伦[1] 

机构地区：[1]四川压电与声光技术研究所

出　　处：《压电与声光》1998年第2期73-76,84,共5页Piezoelectrics & Acoustooptics

摘　　要：声表面波滤波器因其在电子系统中的使用目的和使用环境的不同，具有不同的指标要求。文章介绍了一种窄带、高矩形度声表面波滤波器的设计过程，制作出了中心频率为１４０．９～１４５．１ＭＨｚ四路器件，其相对带宽０．３９％，矩形系数小于２．５，并成功地应用于整机系统。SAW filters are required to have different specifications from their applications and enviroments in electronic systems.This paper presents the design procedure of a narrow band SAW filter with high rectangle factor.4 different SAW filters with center frequency 140.9～ 145.1 MHz were fabricated,the relative bandwidth is 0.39%,rectangle factor<2.5.These SAW filters have been used in overall system successfully.

关 键 词：窄带 高矩形度 声表面波 滤波器 

分 类 号：TN713[电子电信—电路与系统] TN65