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A compact dual-band bandstop filter

✍ Scribed by Ka Wai Wong; Leung Chiu; Quan Xue

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

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✦ Synopsis

Abstract

A compact nonresonating, dual‐band bandstop filter is proposed. By connecting two transmission lines with proper characteristic impedances and phase delay (one is 90° and the other one is 450° in electrical length at center frequency), a dual stopband with two transmission zeros at each stopband is obtained. A prototype is demonstrated for 2.4/5.8‐GHz applications. The measured results show the dual fractional stopband bandwidths with 20‐dB signal attenuation are 25.2% and 12.4%. Also, the theoretical simulation, electromagnetic simulation, and the measured results show good agreement with this simple design. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2952–2954, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24753

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