Novel Dual-Band Microwave Filter Using Dual-Capacitively-Loaded Cavity Resonators

被引：43

作者：

Liu, Xiaoguang ^{[1
]}

Katehi, Linda P. B. ^{[2
]}

Peroulis, Dimitrios ^{[1
]}

机构：

[1] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47906 USA

[2] Univ Calif Davis, Davis, CA 95616 USA

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2010年 / 20卷 / 11期

关键词：

Cavity resonator; dual-band filter; quality factor; waveguide filter;

D O I：

10.1109/LMWC.2010.2059696

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：

We present a novel design concept for low-loss dualband cavity filters based on dual-capacitively-loaded (DCL) cavity resonators. The relatively independent control over the center frequencies, inter-resonator and external coupling coefficients makes the DCL resonator an ideal building block for dual-band filters with widely separated passbands. The high unloaded quality factor (Q(u)) of the DCL cavity resonator ensures a low insertion loss. An example 2-pole dual-band filter at 2.4 and 5.0 GHz is demonstrated with an insertion loss of 1.47 dB at 2.4 GHz, 1.01 dB at 5.0 GHz and a bandwidth of 24.8 MHz (similar to 1%) at 2.4, and 51.2 MHz (similar to 1%) at 5.0 GHz.

引用

页码：610 / 612

页数：3

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