Resonances and Field Enhancement in Cylindrical Electromagnetic Bandgap Structures

Vakhtang JANDIERI  Kiyotoshi YASUMOTO  Young-Ki CHO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E96-C   No.11   pp.1436-1439
Publication Date: 2013/11/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E96.C.1436
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electromagnetic Theory
Keyword: 
cylindrical bandgap structures,  field enhancement,  radiation,  reciprocity relation,  scattering,  

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Summary: 
Electromagnetic scattering and radiation in cylindrical electromagnetic bandgap (EBG) structure is analyzed. The radiated field from a line source placed inside the eccentric configuration of the cylindrical EBG structure and plane wave incident on the cylindrical EBG structure is numerically studied based on the method proposed by the authors in their early papers. Using the developed formulation, it is shown first time that when the cylindrical EBG is illuminated by plane wave of particular resonance frequencies, the field are strongly enhanced or shaded inside the cylindrical EBG structure and this effect depends on the angle of incidence of the plane waves. We give a deep physical insight into explanation of this phenomenon based on the Lorentz reciprocity relation for cylindrical structures.