Open AccessSubstrate integrated waveguide quasi‐elliptic bandpass filter with parallel coupled microstrip resonator
Author(s) -
Kiani S.,
Rezaei P.,
Karami M.,
Sadeghzadeh R.A.
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2018.0170
Subject(s) - band pass filter , waveguide filter , microstrip , sideband , resonator , materials science , coupling (piping) , filter (signal processing) , waveguide , optoelectronics , prototype filter , electronic engineering , physics , optics , filter design , telecommunications , electrical engineering , computer science , engineering , microwave , metallurgy
A quasi‐elliptic bandpass filter has been designated based on substrate integrated waveguide cavity and parallel‐coupled microstrip line (PCML). Two PCMLs are utilised to provide cross‐coupling at both sides of the investigated filter. Electrical coupling intensity in the filter can be controlled by the proposed PCMLs which generate transmission zeros at sides of pass‐band. Sharp sideband and significant out‐of‐band rejection are achieved.