Open AccessCompact high Q bandpass filter by using substrate integrated waveguide and split rings capacitive load post
Author(s) -
Jelodar A.,
Nooraei Yeganeh A.,
Sedighy S.H.
Publication year - 2019
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.2019.0208
Subject(s) - band pass filter , capacitive sensing , materials science , insertion loss , bandwidth (computing) , fractional bandwidth , optoelectronics , waveguide filter , filter (signal processing) , substrate (aquarium) , electronic engineering , prototype filter , low pass filter , electrical engineering , engineering , telecommunications , oceanography , geology
A substrate integrated waveguide cavity filter is designed by loading with two split rings capacitive posts. Using these split rings posts results in high quality factor, low insertion loss (2.1 dB), very narrow bandwidth (2%) at 4.6 GHz centre frequency and compact (0.97×0.5 λ g 2 ) bandpass filter structure. The filter measured results are in good agreement with the simulation ones which prove the idea.