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
收藏
页数:4
相关论文
共 4 条