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A microstrip filter utilized in ultra‐wideband antennas
Author(s) -
Wang ChienJen,
Lin ChiaHorng,
Wu JinWei
Publication year - 2004
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.20107
Subject(s) - stopband , passband , electronic engineering , microstrip , filter (signal processing) , microwave , wideband , engineering , electrical engineering , acoustics , band pass filter , telecommunications , physics
In this paper, a microstrip filter has been designed, fabricated, and measured for application in ultra‐wideband antennas. By using the combination of a band‐stop filter and a low‐pass filter, the band‐selective characteristics can be demonstrated. In order to enhance the suppression of the out‐of‐band signals, a defected ground structure (DGS) with stopband performance is used. The passband responses of the filter, which range below 2.8 GHz and from 5.0 to 6.0 GHz, cover most commercial wireless communication systems. The LC‐lumped equivalent circuit of the filter has been extracted and simulated by using transmission‐line analysis. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 41: 248–251, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20107