Volume 51, Issue 7 pp. 1745-1748

Ultrawideband bandpass filter with a controllable notched band

Shanshan Gao

Shanshan Gao

Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China

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Shaoqiu Xiao

Corresponding Author

Shaoqiu Xiao

Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China

Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of ChinaSearch for more papers by this author
Bing-Zhong Wang

Bing-Zhong Wang

Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, People's Republic of China

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First published: 17 April 2009
Citations: 2

Abstract

A compact ultrawideband (UWB) bandpass filter with a controllable notched band within the UWB passband is proposed on the basis of a stub-loaded modified stepped impedance resonator (SIR) and two identical interdigital feed-lines. In the design, the modified SIR and the interdigital feed-lines can work together properly to make up the desired UWB passband. The stubs loaded at each side of the modified SIR can generate a desired notched band within the UWB passband to avoid the interference from wireless local-area network. There are good agreements between the simulated and measured results. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1745–1748, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24455

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