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Dual‐mode microstrip bandpass filter using circular patch resonator with two transmission zeros
Author(s) -
Li JiaLin,
Chen JianXin,
Wang JianPeng,
Xue Quan,
Shao Wei,
Xia Lei,
Xue LiangJin
Publication year - 2005
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.20891
Subject(s) - band pass filter , microstrip , resonator , dual mode , acoustics , electronic engineering , materials science , physics , engineering , optoelectronics
A microstrip dual‐mode bandpass filter (BPF) using a circular patch resonator is investigated in this paper. Unlike the conventional dual‐mode patch‐resonator bandpass filter studied in the literature, the introduced filter is perturbed by one circular hole in the northeast area of the patch. The filter has a simple topology and can implement elliptic‐function response characteristics. An experimental filter is optimally designed and fabricated, for the first time, in order to demonstrate the idea. Both the calculated and measured results are presented. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 28–30, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20891