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
出处
《压电与声光》
CSCD
北大核心
1997年第6期366-368,F004,共4页
Piezoelectrics & Acoustooptics
关键词
声表面波
宽带滤波器
倾斜色散换能器
SAW, wide band filter, slanted dispersive interdigital transducer
