Open AccessDual‐band bandstop filter using stub‐loaded resonators with sharp rejection characteristic
Author(s) -
Chen FuChang,
Qiu JieMing,
Chu QingXin
Publication year - 2013
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.2012.3752
Subject(s) - stub (electronics) , resonator , band stop filter , acoustics , electronic engineering , materials science , filter (signal processing) , optoelectronics , physics , electrical engineering , low pass filter , engineering
Dual‐band bandstop filters using open‐circuited stub‐loaded resonators are presented. The first and second resonant frequencies of the open‐circuited stub‐loaded resonator can be flexibly controlled by tuning the length and position of the open‐circuited stub. To illustrate the concept, a dual‐band bandstop filter has been designed, fabricated and measured. The prototype of the dual‐band bandstop filter achieved attenuation of 42 and 44 dB at 2.4 and 5.2 GHz.