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Title: Closely coupled metallodielectric electromagnetic band-gap structures formed by double-layer dipole and tripole arrays
Authors: Feresidis, Alexandros P.
Apostolopoulos, George
Serfas, N.
Vardaxoglou, J.C.
Keywords: Antennas
Electromagnetic band-gap (EBG) structures
Frequency selective surfaces
Periodic structures
Issue Date: 2004
Publisher: © Institute of Electrical and Electronics Engineers (IEEE)
Citation: FERESIDIS, A.P....et al., 2004. IEEE Transactions on Antennas and Propagation, 52(5), pp.1149 - 1158
Abstract: The concept of closely coupled metallodielectric electromagnetic band-gap (CCMEBG) structures is introduced and investigated using two-dimensional (2-D) double-layer dipole and tripole arrays. An efficient numerical method based on a set of coupled integral equations is used to simulate the double-layer array response. The arrays are placed in close proximity to each other and shifted appropriately in order to produce maximum element coupling. Measurements are presented for oblique plane wave and surface wave incidences. A substantial decrease of the stopband center frequency is observed with the CCMEBG design for both element geometries. Furthermore, wider bandwidth and improved angular stability as compared to single-layer MEBG is obtained. The tripole arrays arranged on a hexagonal lattice exhibit common stopband for any polarization of the incident field due to the symmetry of the element in conjunction with the lattice. The lowering of the resonance for up to 4 to 1 in simulation results emerges as the layers are separated by less than λ/1200 (0.1 mm at 2.5 GHz).
Description: Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Version: Published
DOI: 10.1109/TAP.2004.827530
URI: https://dspace.lboro.ac.uk/2134/9452
Publisher Link: http://dx.doi.org/10.1109/TAP.2004.827530
ISSN: 0018-926X
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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