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Design of microstrip dual-band bandpass filter with controllable bandwidth

✍ Scribed by Xuehui Guan; Zhewang Ma; Peng Cai; Tetsuo Anada; Gen Hagiwara

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
190 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A dual‐band microstrip bandpass filter with controllable bandwidth is proposed by using new dual‐band resonators. The resonator consists of a pair of shunt open stubs, including a stepped‐impedance open stub. The open stubs produce three transmission zeros, which result in sharp attenuations near the passbands, and large isolations between the two passbands. Design formulas of this type of filters are provided. A dual‐band bandpass filter operating at 2.4 and 5.2 GHz is designed and tested, and the measured characteristics agree well with the theoretical simulations. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 740–742, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22232

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