A compact dual‐band bandstop filter | Zendy

Wong Ka Wai | Zendy; Chiu Leung | Zendy; Xue Quan | Zendy

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A compact dual‐band bandstop filter

Author(s) -

Wong Ka Wai,

Chiu Leung,

Xue Quan

Publication year - 2009

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.24753

Subject(s) - stopband , microwave , band stop filter , multi band device , attenuation , center frequency , electronic engineering , electrical impedance , physics , topology (electrical circuits) , filter (signal processing) , acoustics , electrical engineering , computer science , engineering , band pass filter , optics , low pass filter , telecommunications , antenna (radio)

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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