NOVEL DUAL-MODE DUAL-BAND BANDPASS FILTER USING DOUBLE SQUARE-LOOP STRUCTURE | Zendy

Zhi-Xi Chen | Zendy; XiWang Dai | Zendy; Chang-Hong Liang | Zendy

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NOVEL DUAL-MODE DUAL-BAND BANDPASS FILTER USING DOUBLE SQUARE-LOOP STRUCTURE

Author(s) -

Zhi-Xi Chen,

XiWang Dai,

Chang-Hong Liang

Publication year - 2007

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier07082803

Subject(s) - dual (grammatical number) , band pass filter , dual mode , square (algebra) , loop (graph theory) , multi band device , topology (electrical circuits) , mathematics , physics , computer science , electronic engineering , engineering , telecommunications , optics , art , geometry , literature , combinatorics , antenna (radio)

A dual-mode dual-band bandpass microstrip filter using double square-loop structure is proposed in this paper. Each of the square-loop forms a dual-mode resonator with controllable respective passband. Two tuning patches placed symmetrically at the side of the perturbation patch are used to change the higher passband frequency, while while keeping the lower invariable. Several attenuation poles in the stopband are realized to improve the selectivity of the proposed bandpass filter. The filter is evaluated by experiment and simulation with good agreement.

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