Open AccessCompact SIW dual‐band bandpass filter using novel dual‐resonance quasi‐SIW‐transmission‐line‐structure resonators
Author(s) -
Wsx Hezheng,
Wu Ying
Publication year - 2016
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2016.0199
Subject(s) - resonator , band pass filter , multi band device , transmission line , conductor , transmission (telecommunications) , filter (signal processing) , materials science , optoelectronics , waveguide , line (geometry) , resonance (particle physics) , physics , optics , computer science , telecommunications , electrical engineering , engineering , mathematics , geometry , antenna (radio) , composite material , particle physics
A compact substrate integrated waveguide (SIW) dual‐band bandpass filter (DBSF) using novel quasi‐SIW‐transmission‐line‐structure resonators is proposed in this study. This dual‐resonance SIW resonator which works in TE 100 mode and TE 201 mode can be evolved from a conventional SIW‐transmission line or a two‐conductor transmission line. Multiple signals transmission paths bring extra transmission zeros (TZs) and improve the selectivity and out‐band rejection of the DBSF. This filter works at 4.75 GHz/4.82 GHz, 5.38 GHz/5.51 GHz with 3 dB fractional bandwidths of 3.8 and 3.9%, respectively, and has six TZs. The measured results agree with the simulation results well.