Open AccessSubstrate integrated waveguide filters with broadside‐coupled complementary split ring resonators
Author(s) -
Huang Liwen,
Robertson Ian D.,
Wu Weiwei,
Yuan Naichang
Publication year - 2013
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2013.0117
Subject(s) - resonator , band pass filter , waveguide , broadside , materials science , substrate (aquarium) , filter (signal processing) , waveguide filter , optoelectronics , electronic engineering , topology (electrical circuits) , split ring resonator , prototype filter , optics , physics , engineering , filter design , electrical engineering , oceanography , geology
Four designs of substrate integrated waveguide (SIW) filter employing integrated broadside‐coupled complementary split‐ring resonators are compared. By changing the orientation of the rings, four types of SIW unit cell are proposed and investigated and it is shown that, for one particular topology, two poles and two zeros can be realised with a single unit cell. Bandpass filters based on the proposed resonators coupled by evanescent‐mode SIW sections have been fabricated and tested. The proposed filters have the advantages of compact size, high selectivity and ease of integration.