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A low-loss ring UWB bandpass filter

✍ Scribed by Min-Hang Weng; Shih-Kun Liu; Yi-Ting Liu; Cheng-Yuan Hung

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
202 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this article, a compact and low loss ring ultra‐wideband (UWB) bandpass filter (BPF) with an enlarged perturbation element is designed and implemented on FR4 substrate. This filter at center frequency f~0~ of 4.16 GHz has presented almost very good measured characteristics including the bandwidth of 3.04–5.27 GHz (3‐dB fractional bandwidth of 54%), a low insertion loss of 0.8 dB, a high passband selectivity due to two transmission zeros in the passband edges, and a low group delay varied between 0.1 and 0.6 ns. Experimental results of the fabricated filter show a good agreement with the predict results. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2317–2319, 2008; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.23639

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