高频大带宽滤波器  

High Frequency SAW Filters with Wide Bandwith

作　　者：张龙[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》1997年第6期366-368,F004,共4页Piezoelectrics & Acoustooptics

摘　　要：高频大带宽滤波器采用常规设计方法具有损耗大、带内波动和群时延特性差的缺点。文章介绍了采用倾斜色散换能器结构在Ｙ１２７．８６°ＬＮ基片上实现中心频率为７４０ＭＨｚ、带宽为４００ＭＨｚ的滤波器的设计方法和实验结果。There are some disadvantages in high frequency SAW filters with wide bandwidth using conventional design method, such as larger loss, larger ripple in pass band and poor group delay characteristics This paper presents a design method and the experimantal results of the SAW filters with slanted dispersive interdigital transducer structure The filters were produced on the Y 127 86° LN substrate with center frequency of 740 MHz, bandwidth of 400 MHz

关 键 词：声表面波 宽带滤波器 倾斜色散换能器 

分 类 号：TN65[电子电信—电路与系统] TN713