NDLI: Compact wide-stopband SIW dual-band filter with closely spaced passbands

Content Provider	IET Digital Library
Author	Xie, Hao Wei Zhou, Kang Zhou, Chun Xia Wu, Wen
Abstract	Compact substrate-integrated waveguide (SIW) dual-band bandpass filter with closely spaced passbands and wide-stopband characteristics is proposed for the first time based on inline-coupled perturbed SIW triple-mode cavities. The first three resonant modes in the triple-mode cavities can be flexibly controlled so that two closely spaced passbands can be realised based on the first two resonant modes, and wide-stopband can be achieved by staggering the third and other higher-order resonant modes without resorting to extra structures. The external and internal couplings of the dual passbands can be specified and designed flexibly benefitting from the offset feeding ports and coupling windows. A prototype centred at 13 and 14 GHz is synthesised, designed, fabricated, and tested as a demonstration, extending the stopband to 1.97f 1 with rejection level better than 25 dB.
Starting Page	822
Ending Page	825
Page Count	4
ISSN	00135194
Volume Number	56
e-ISSN	1350911X
Issue Number	Issue 16, Aug (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/56/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2020.0804
Journal	Electronics Letters
Publisher Date	2020-06-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Band-pass Filter Band-stop Filter Cavity Resonator Filter Closely Spaced Passbands Compact Substrate-integrated Waveguide Dual-band Bandpass Filter Compact Wide-stopband SIW Dual-band Filter Coupling Windows Dual Passbands External Couplings Frequency 13.0 GHz Frequency 14.0 GHz Higher-order Resonant Mode Inline-coupled Perturbed SIW Triple-mode Cavities Internal Couplings Microwave Filter Offset Feeding Ports Passive Filter Passive Network Substrate Integrated Waveguide Waveguide And Microwave Transmission Line Waveguide And Microwave Transmission Line Component Waveguide Filter Wide-stopband Characteristic
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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