NDLI: High CM suppression balanced SIW BPF and HMSIW directional coupler utilising perfect electric conductor/perfect magnetic conductor characteristic

Content Provider	IET Digital Library
Author	Deng, Hong wei Sun, Liang Zhu, Jia ming Han, Yang kun Xue, Yi fan
Abstract	In this study, high common-mode (CM) suppression balanced substrate-integrated waveguide (SIW) bandpass filter (BPF) and half-mode SIW (HMSIW) directional coupler are formed by two vertically stacked identical SIW or HMSIW single-ended ones and an aperture etched on the common ground between them. Under CM operation, the aperture is perfect magnetic conductor (PMC). When the height is less than λ g/4, the space between perfect electric conductor and PMC cannot transmit electromagnetic wave and a total reflection is got at the aperture edge. So, the aperture structure in SIW can effectively cut off CM noise over a wide frequency range. For the HMSIW, the spoof surface plasmon polariton structure is further loaded in the aperture near the open circuit plane to suppress the slot line mode (main TE mode). The CM suppression can be basically made independent of differential-mode response, which is very important to simplify the design and tuning processes. Finally, high CM suppression balanced SIW BPF and HMSIW directional coupler are designed and fabricated. Good agreements between the simulated and measured results demonstrate the validity of proposed configurations.
Starting Page	1061
Ending Page	1068
Page Count	8
ISSN	17518725
Volume Number	14
e-ISSN	17518733
Issue Number	Issue 10, Aug (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/14/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2019.0950
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2020-04-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Aperture Edge Aperture Structure Band-pass Filter Common-mode Suppression Differential-mode Response Half-mode SIW Directional Coupler High CM Suppression HMSIW Directional Coupler Open Circuit Plane Passive Filter Passive Network Perfect Electric Conductor Perfect Magnetic Conductor Characteristic SIW BPF Slot Line Slot Line Mode Substrate Integrated Waveguide Substrate-integrated Waveguide Surface Plasmon Polariton Vertically Stacked Identical SIW Waveguide And Microwave Transmission Line Waveguide And Microwave Transmission Line Component Waveguide Couplers
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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