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Design of asymmetrical compact microstrip resonator filter with four controllable transmission zeros

✍ Scribed by Yi-Chyun Chiang; Ming-An Chung

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
189 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

This article presents a method of synthesizing a microwave filter consisting of asymmetrical compact microstrip resonators. This filter is compact in size and exhibits a third‐order characteristic in the passband and four controllable transmission zeros on the stop bands to enhance the desired signal rejection. A filter synthesizing method is developed to obtain the appropriate values of filter elements. Then the practical layout of filter is determined with the help of a commercial EM simulator. The efficiency of proposed design concept is verified through the design and measurement of an experimental Ku‐band filter. A prototype is fabricated on the commercial Teflon PCB board with 3% bandwidth. The measured results show about 2 dB insertion loss and greater than 20 dB return loss in the passband. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 42–45, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22977

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