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Novel ultra wideband filter using three coupled lines and short stubs

✍ Scribed by Qi Li; Chang-Hong Liang; Xin Lai; Jian-Zhong Chen

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

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✦ Synopsis

Abstract

A novel compact ultra‐wideband bandpass filter is proposed to meet Federal Communications Commission's spectrum mask. Shunt short‐circuited stubs and the parallel coupled lines are used to achieve a fraction passband from 3.1 GHz to 10.6 GHz. Three interdigital edge coupled microstrip lines are used for coupling enhancement. By employing short‐circuited stubs, this filter significantly improves the selectivity and out‐of‐band characteristics. For verification, the proposed filter is designed, simulated, and fabricated with good agreement. The design of the filter is simple, and it shows good frequency response. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2272–2274, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24646

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