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Novel compact lowpass filter with CMRC based on defected ground structure
Author(s) -
Chen YaJun
Publication year - 2006
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.21446
Subject(s) - stopband , microstrip , microwave , electronic engineering , filter (signal processing) , elliptic filter , low pass filter , topology (electrical circuits) , transmission line , engineering , electrical engineering , band pass filter , band stop filter , telecommunications
In this paper, we propose a novel defected ground structure (DGS) for lowpass filter applications. The basic resonant element of the proposed DGS unit shows the elliptic characteristics, and two transmission zeros can be realized to extend the stopband. Incorporating compact microstrip resonant cell (CMRC) in microstrip line above the DGS unit improves the rejection level of stopband. The theoretical and measured results are presented and show good agreement. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 695–697, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21446