Closely coupled metallodielectric electromagnetic band-gap structures formed by double-layer dipole and tripole arrays

被引：30

作者：

Feresidis, AP ^{[1
]}

Apostolopoulos, G ^{[1
]}

Serfas, N ^{[1
]}

Vardaxoglou, JC ^{[1
]}

机构：

[1] Univ Loughborough, Dept Elect & Elect Engn, Wirless Commun Res Grp, Loughborough LE11 3TU, Leics, England

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2004年 / 52卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

antennas; arrays; electromagnetic band-gap (EBG) structures; frequency selective surfaces; periodic structures;

D O I：

10.1109/TAP.2004.827530

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 lambda/1200 (0.1 mm at 2.5 GHz).

引用

页码：1149 / 1158

页数：10

共 24 条

[1] Characterization of electromagnetic band-gaps composed of multiple periodic tripods with interconnecting vias: Concept, analysis, and design [J].