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Novel defected ground structure element with triple transmission zeros and its application for multispurious suppression of microstrip parallel‐coupled‐line bandpass filter
Author(s) -
Ting SioWeng,
Tam KamWeng,
Martins Rui
Publication year - 2007
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.22457
Subject(s) - microstrip , band pass filter , microwave , engineering , electronic engineering , transmission line , filter (signal processing) , topology (electrical circuits) , element (criminal law) , electrical engineering , telecommunications , political science , law
A novel compact defected ground structure (DGS) element with triple transmission zeros is proposed. The zeros can be tuned individually by the DGS geometry and the overall etched area is kept as compact as that of the conventional structure with single zero. The traditional microstrip parallel‐coupled‐line bandpass filter cascading this new element, not only achieves the multispurious suppression but also its basic design formulation is retained. A prototype DGS filter was designed and tested to validate its performance. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1409–1412, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22457