Open AccessDesigning of Novel Eighth-Mode Forth-Order Substrate Integrated Waveguide Band-Pass Filter with High Selectivity
Author(s) -
Cleophas D. K. Mutepfe,
Viranjay M. Srivastava
Publication year - 2021
Publication title -
journal of communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.185
H-Index - 35
eISSN - 2374-4367
pISSN - 1796-2021
DOI - 10.12720/jcm.16.12.553-558
Subject(s) - resonator , bandwidth (computing) , center frequency , band pass filter , optoelectronics , passband , materials science , waveguide , waveguide filter , filter (signal processing) , substrate (aquarium) , coupling (piping) , fractional bandwidth , telecommunications , physics , optics , computer science , electrical engineering , low pass filter , prototype filter , engineering , oceanography , geology , metallurgy
A fourth-order Substrate Integrated Waveguide (SIW) filter has been presented in this research work. The four Eighth-Mode (EM) SIW cavity resonators have been electrically coupled and source to load coupling has been achieved by a slight modification of the eighth-mode resonator cavity. Here a 87.5% size reduction has been achieved using the EMSIW, which plays a significant role in achieving miniaturized structure. The operating center frequency is 13.5 GHz with a 3dB bandwidth of 0.5 GHz. The Rogers-5880 substrate has been utilized with relative permittivity of 2.2. The results show that the filter has three transmission zeros on either side of the pass-band, which gives high selectivity and a high out of band rejection.