X‐band 1/4 λ  dielectric‐strip resonator filter | Zendy

Yang WenWen | Zendy; Zhu YanYuan | Zendy; Chen JianXin | Zendy

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X‐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) - dielectric resonator , resonator , dielectric , dielectric resonator antenna , helical resonator , materials science , filter (signal processing) , optoelectronics , electrical engineering , electronic engineering , acoustics , telecommunications , computer science , physics , engineering

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.

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