Dispersion Characteristics of a Cylindrical Electromagnetic Band Gap Structure

Author

Boutayeb, Halim ; Mahdjoubi, Kouroch

Author_Institution

Inst. Nat. de la Recherche Scientifique (INRS- EMT), Montreal, Que.

Volume

16

Issue

11

fYear

2006

Firstpage

630

Lastpage

632

Abstract

In this letter, a new analytical expression for the dispersion equation of radially periodic structures is derived. The periodic structure is considered as a set of parallel cylindrical frequency selective surfaces, and the dispersion equation is calculated by using a transmission line model. Using this result, the dispersion proprieties of cylindrical electromagnetic bandgap structures composed of continuous or discontinuous metallic wires are presented. It is shown that the band structures of these materials can be determined by using the proposed dispersion equation. Cylindrical periodic materials have potential applications for designing directive antennas, circular high impedance surfaces, or agile antennas

Keywords

directive antennas; dispersion (wave); energy gap; periodic structures; photonic band gap; transmission line theory; wires (electric); band structures; cylindrical electromagnetic band gap structure; directive antennas; discontinuous metallic wires; dispersion equation; parallel cylindrical frequency selective surfaces; radially periodic structures; transmission line model; Directive antennas; Distributed parameter circuits; Equations; Frequency selective surfaces; Metamaterials; Periodic structures; Power transmission lines; Transmission line matrix methods; Transmission line theory; Wires; Cylindrical structures; dispersion equation; periodic structures;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2006.884772

Filename

1717526