Open AccessSixteenth‐mode substrate integrated waveguide bandpass filter loaded with complementary split‐ring resonator
Author(s) -
Azad A.R.,
Mohan A.
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.3620
Subject(s) - band pass filter , passband , insertion loss , return loss , resonator , split ring resonator , materials science , bandwidth (computing) , waveguide , waveguide filter , optics , filter (signal processing) , substrate (aquarium) , optoelectronics , prototype filter , physics , telecommunications , low pass filter , electrical engineering , engineering , oceanography , geology , antenna (radio)
A novel sixteenth‐mode substrate integrated waveguide (SMSIW) bandpass filter loaded with complementary split‐ring resonator (CSRR) is proposed. The filter size is reduced by introducing the SMSIW circular cavity loaded with CSRR. The SMSIW occupies only 6.25% of the conventional substrate integrated waveguide with same resonant frequency. Further miniaturisation is achieved by loading the SMSIW circular cavities with CSRRs. The designed filter is centred at 2.45 GHz with a bandwidth of 8.2%. The measured minimum insertion loss is 0.9 dB and passband return loss is below 10 dB. Good agreement is achieved between simulated and measured results.