A NOVEL TRIPLE-MODE BANDPASS FILTER USING HALF-WAVELENGTH-RESONATOR-COUPLED SQUARE-LOOP RESONATOR | Zendy

ZhiChong Zhang | Zendy; Wenlang Luo | Zendy

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A NOVEL TRIPLE-MODE BANDPASS FILTER USING HALF-WAVELENGTH-RESONATOR-COUPLED SQUARE-LOOP RESONATOR

Author(s) -

ZhiChong Zhang,

Wenlang Luo

Publication year - 2018

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl18063002

Subject(s) - resonator , band pass filter , square (algebra) , wavelength , loop (graph theory) , helical resonator , filter (signal processing) , optics , mode (computer interface) , materials science , optoelectronics , physics , engineering , computer science , electrical engineering , mathematics , geometry , combinatorics , operating system

A novel triple-mode bandpass filter (BPF) using half-wavelength-resonator-coupled squareloop resonator is developed in this letter. The half wavelength resonator is applied to add an additional path, which increases a pole in the passband and a transmission zero in the stopband. Furthermore, the coupling scheme is used to accurately predict its desired performance. Compared to the conventional square-loop dual-mode filter, higher frequency selectivity and wider bandwidth are achieved. Finally, this filter is designed, fabricated and measured. Good agreement is achieved among the theoretical, simulated and measured results. All of these results validate our design idea.

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