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Design of microstrip filter based on slow-wave open-loop resonator

✍ Scribed by Xiao-Chuan Zhang; Jun Xu; Zhi-Yuan Yu; Yu-Liang Dong

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
318 KB
Volume
51
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A microstrip bandpass filter implemented with slow‐wave open‐loop resonators is described in this article. The slow‐wave open‐loop resonators make the filter compact and allow the implementation of positive and negative inter‐resonator couplings. Implementation of the positive and negative couplings is used to introduce a pair of finite frequency transmission‐zeros in the filter response. The two zeros are designed to be close to the passband, thus improving the selectivity of the filter. As an example, a fourth‐order cross‐coupled filter is fabricated. The experimental results are demonstrated and discussed. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1057–1060, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24232

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