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An ultra-wideband bandpass filter using hybrid structure of microstrip and CPW

✍ Scribed by Xun Luo; Jian-Guo Ma; Kaixue Ma; Kiat Seng Yeo

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

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✦ Synopsis

Abstract

An ultra‐wideband (UWB) bandpass filter is proposed based on the hybrid structure of microstrip and coplanar waveguide (CPW). First, the detached‐mode resonator is formed on the CPW layer, which composes a quarter‐wavelength (λ/4) multiple‐mode resonator (MMR) with a short‐stub and a λ/4 single‐mode resonator. Then, two λ/4 microstrip open‐stubs on the top side of the common substrate are introduced for bandwidth enhancement to meet the UWB passband limit. Quasi‐elliptic function response and UWB operation are achieved. The simulated and measured results show an excellent agreement. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2470–2473, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24658

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