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Wideband bandpass filter of folded substrate‐integrated waveguide integrating with stripline compact resonant cell
Author(s) -
Geng Liang,
Che Wenquan,
Deng Kuan
Publication year - 2008
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.23117
Subject(s) - passband , band pass filter , stripline , wideband , insertion loss , return loss , microwave , waveguide , substrate (aquarium) , materials science , filter (signal processing) , electronic engineering , optoelectronics , engineering , electrical engineering , telecommunications , geology , oceanography , antenna (radio)
A wideband bandpass filter constructed into folded substrate‐integrated waveguide (FSIW) is proposed, incorporating with the stripline compact resonant cell (CRC). The folded SIW preserves nearly the same propagation characteristics with its counterpart substrate‐integrated waveguide (SIW); however, the width of FSIW is only half of SIW, providing a more compact platform for many novel circuits or subsystems. A prototype of this wideband bandpass filter was fabricated and measured. Good agreements are observed between the experimental results and the simulations. The results demonstrate a wide passband about 83.7% (from 3.3 to 8.05 GHz) at −10 dB return loss and the insertion loss in the entire passband is less than 0.26 dB. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 390–393, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23117