Moment Method Analysis of a Conformal Curl Antenna Printed Within Layered Dielectric Cylindrical Media

Author

Wu, Junyong ; Khamas, S.K. ; Cook, G.G.

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK

Volume

61

Issue

7

fYear

2013

fDate

7/1/2013 12:00:00 AM

Firstpage

3912

Lastpage

3917

Abstract

A curl antenna printed within a grounded cylindrical dielectric substrate is analyzed efficiently using the method of moments (MoM). The antenna consists of a single Archimedean spiral arm printed on the cylindrical surface which is fed through the substrate using a radial probe, and a rigorous model is developed for this feeding probe. The cylindrical media is modeled using dyadic Green´s functions (DGF), where a novel asymptotic extraction approach and the generalized pencil of functions (GPOF) method are employed to expedite the analysis. Computations are compared with those of antennas in equivalent planar structures, as well as with the results of commercial software, and good agreement is achieved in all cases.

Keywords

Green´s function methods; antenna feeds; conformal antennas; method of moments; DGF; MoM; asymptotic extraction approach; commercial software; conformal curl antenna; cylindrical surface; dyadic Green functions; equivalent planar structures; feeding probe; generalized pencil-of-functions; grounded cylindrical dielectric substrate; layered dielectric cylindrical media; method of moments; moment method analysis; radial probe; rigorous model; single-Archimedean spiral arm; Cylindrical antennas; curl antenna; dyadic Green´s function; moment method;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2254440

Filename

6487430