Open AccessX‐band 1/4 λ dielectric‐strip resonator filter
Author(s) -
Yang WenWen,
Zhu YanYuan,
Chen JianXin
Publication year - 2018
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.2018.5497
Subject(s) - resonator , band pass filter , filter (signal processing) , dielectric , materials science , dielectric resonator , quality (philosophy) , helical resonator , electrical engineering , optoelectronics , electronic engineering , optics , acoustics , physics , engineering , quantum mechanics
A novel quarter‐guided‐wavelength (1/4 λ ) dielectric‐strip resonator (DSR) with one short‐circuited end is proposed to design a compact and low‐loss filter at X‐band. One end of the DSR is metallised and then shorted to ground effectively to achieve a half‐cut conversion from 1/2 λ DSR. As a result, the resonator length is reduced by half while the unloaded quality factor ( Q u ) of the 1/4 λ DSR only has a slight reduction as compared to the corresponding 1/2 λ DSR. For demonstration, a third‐order DSR bandpass filter centred at 10.45 GHz is designed, implemented and measured. Good agreement between simulated and measured results can be obtained, showcasing the advantages of compact size and low loss.