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A microstrip filter utilized in ultra-wideband antennas

✍ Scribed by Chien-Jen Wang; Chia-Horng Lin; Jin-Wei Wu

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
177 KB
Volume
41
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this paper, a microstrip filter has been designed, fabricated, and measured for application in ultra‐wideband antennas. By using the combination of a band‐stop filter and a low‐pass filter, the band‐selective characteristics can be demonstrated. In order to enhance the suppression of the out‐of‐band signals, a defected ground structure (DGS) with stopband performance is used. The passband responses of the filter, which range below 2.8 GHz and from 5.0 to 6.0 GHz, cover most commercial wireless communication systems. The LC‐lumped equivalent circuit of the filter has been extracted and simulated by using transmission‐line analysis. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 41: 248–251, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20107

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