QUADRI-FOLDED SUBSTRATE INTEGRATED WAVEGUIDE CAVITY AND ITS MINIATURIZED BANDPASS FILTER APPLICATIONS | Zendy

Chuan An Zhang | Zendy; Yu Jian Cheng | Zendy; Yong Fan | Zendy

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QUADRI-FOLDED SUBSTRATE INTEGRATED WAVEGUIDE CAVITY AND ITS MINIATURIZED BANDPASS FILTER APPLICATIONS

Author(s) -

Chuan An Zhang,

Yu Jian Cheng,

Yong Fan

Publication year - 2011

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc11052401

Subject(s) - chebyshev filter , band pass filter , substrate (aquarium) , waveguide , conductor , materials science , coupling (piping) , layer (electronics) , optoelectronics , filter (signal processing) , resonance (particle physics) , optics , physics , engineering , electrical engineering , nanotechnology , oceanography , geology , particle physics , metallurgy , composite material

In this paper, a quadri-folded substrate integrated waveguide (QFSIW) resonant cavity is proposed and investigated for the flrst time, which is able to reduce the circuit size by 89% compared with the conventional substrate integrated waveguide (SIW) resonant cavity. It has a two-layer conflguration and a C-type coupling slot etched on the middle conductor layer. As an example, such a miniaturized resonant cavity is employed in the design of a four-order S-band SIW bandpass fllter with the Chebyshev response. Negative couplings are used between two adjacent SIW resonant cavities, which don't in∞uence the whole transmission characteristic of the fllter. Experimental results are in good agreement with those from simulations.

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