Coupling-Matrix-Based SAW Filter Design

被引：0

作者：

Lee, Tsung-Chieh ^{[1
]}

Guyette, Andrew ^{[2
]}

Naglich, Eric J. ^{[1
]}

Peroulis, Dimitrios ^{[1
]}

机构：

[1] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

[2] Naval Res Lab, Washington, DC 20375 USA

来源：

2014 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) | 2014年

关键词：

Filters; bandpass filter; surface acoustic wave resonator; SAW filter;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a design method for resonator-type bandpass SAW filters that results in significantly larger bandwidth than what is currently possible with traditional SAW filter synthesis approaches. Unlike traditional lattice/ladder-type SAW filters, this method employs SAW resonators of a single resonant frequency and therefore reduces the complexity of SAW filter design. The proposed coupling-matrix-based SAW resonator models allow for the realization of a custom frequency response using non-custom SAW resonators. Two different implementations, lumped element (LE) and microstrip line (ML), are demonstrated and achieve 3-dB fractional bandwidths (FBWs) of 0.197% and 0.1 % while the electromechanical coupling coefficients, K-t(2), of the SAW resonators used are 0.132% and 0.049%, respectively.

引用

页数：4