IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A compact wideband SIW-DGS filter with two independently controllable transmission zeros and sharp attenuation slopes
Yu GuoJinghui ZhangHaodong Wu
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JOURNAL FREE ACCESS

2018 Volume 15 Issue 18 Pages 20180598

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Abstract

In this paper, the analysis and design of a wide band bandpass substrate integrated waveguide (SIW) filter are presented. A middle layer metal patch is designed in the SIW not only to create two transmission zeros due to 3D separate electric and magnetic coupling paths (SEMCP) but also miniaturize size of the filter. Since 3D electric and magnetic coupling paths are separate, the two transmission zeros above and below the passband can be independently controlled. Defected ground structure (DGS) is designed with substrate integrated waveguide not only for sharp rejection but also for its bandstop characteristics. The design is then verified by simulation and experiment.

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© 2018 by The Institute of Electronics, Information and Communication Engineers
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