[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.6109/jicce.2016.14.4.252

Suppression of Parallel Plate Modes Using Edge-Located EBG Structure in High-Speed Power Bus

Cho, Jonghyun (Missouri S&T EMC Laboratory, Missouri University of Science and Technology)
Kim, Myunghoi (Department of Electrical, Electronic, and Control Engineering, Hankyong National University)

Publication Information

Journal of information and communication convergence engineering / v.14, no.4, 2016 , pp. 252-257 More about this Journal

Abstract

An edge-located electromagnetic bandgap (EL-EBG) structure using a defected ground structure (DGS) is proposed to suppress resonant modes induced by edge excitation in a two-dimensional planar parallel plate waveguide (PPW). The proposed EL-DGS-EBG PPW significantly mitigates multiple transverse-magnetic (TM) modes in a wideband frequency range corresponding to an EBG stopband. To verify the wideband suppression, test vehicles of a conventional PPW, a PPW with a mushroom-type EBG structure, and an EL-DGS-EBG PPW are fabricated using a commercial process involving printed circuit boards (PCBs). Measurements of the input impedances show that multiple resonant modes of the previous PPWs are significantly excited through an input port located at a PPW edge. In contrast, resonant modes in the EL-DGS-EBG PPW are substantially suppressed over the frequency range of 0.5 GHz to 2 GHz. In addition, we have experimentally demonstrated that the EL-DGS-EBG PPW reduces the radiated emission from -24 dB to -44 dB as compared to the conventional PPW.

Keywords

Electromagnetic bandgap (EBG); Parallel plate waveguide (PPW); Radiated emission;

Citations & Related Records

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