Open AccessLow‐loss differential bandpass filter using TE 01 δ ‐mode dielectric resonators
Author(s) -
Zhan Yang,
Li Jiang,
Qin Wei,
Chen JianXin
Publication year - 2015
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.2015.0719
Subject(s) - passband , band pass filter , resonator , filter (signal processing) , insertion loss , differential (mechanical device) , mode (computer interface) , materials science , dielectric resonator , physics , acoustics , electronic engineering , optoelectronics , optics , computer science , engineering , electrical engineering , thermodynamics , operating system
A novel differential bandpass filter (BPF) based on a TE 01 δ ‐mode dielectric resonator (DR) is proposed. By utilising the inherent electromagnetic properties of the TE 01 δ ‐mode ring‐shaped DR, the TE 01 δ mode, as a dominate mode of the DR, can be differentially excited for constructing the fundamental differential passband of the BPF. To validate the proposed idea, a second‐order differential BPF is designed, fabricated and measured. Good agreement is obtained between simulated and measured results, showcasing good performance such as low insertion loss and high common‐mode suppression in the differential passband.