Synthesis of Cross-Coupled Triple-Passband Filters Based on Frequency Transformation

被引：30

作者：

Di, Hao ^{[1
]}

Wu, Bian ^{[1
]}

Lai, Xin ^{[1
]}

Liang, Chang-Hong ^{[1
]}

机构：

[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Peoples R China

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2010年 / 20卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Cross-coupled filter; frequency transformation; synthesis method; triple-passband filters; DUAL-BAND; DESIGN; CHEBYSHEV;

D O I：

10.1109/LMWC.2010.2049829

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：

A synthesis method is presented for triple-passband filters. The proposed method is based on a frequency transformation from the normalized frequency domain to the actual frequency domain. A novel triple-passband filter topology with cross coupling is obtained, which consists of admittance inverters and parallel resonators. The coupling coefficients and the external quality factors can be calculated analytically. To validate the theory, a triple-passband filter is designed and fabricated using microstrip structure. The theoretical response meets the specifications very well, and the measured result shows a good agreement with the simulated one.

引用

页码：432 / 434

页数：3

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