Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/62407
Title: Method of moments analysis of electrically large thin hexagonal loop transceiver antennas: Near- and far-zone fields - Abstract
Authors: Lim, C.-P.
Li, L.-W. 
Leong, M.-S. 
Issue Date: 2000
Source: Lim, C.-P.,Li, L.-W.,Leong, M.-S. (2000). Method of moments analysis of electrically large thin hexagonal loop transceiver antennas: Near- and far-zone fields - Abstract. Journal of Electromagnetic Waves and Applications 14 (9) : 1299-1301. ScholarBank@NUS Repository.
Abstract: This paper presents a method of moments (MOM) analysis, obtains the non-uniform current distribution in closed form, and computes the resulted radiated patterns in both near and far zones, of regular hexagonal loop antennas with electrically large perimeter. An oblique incident field in its general form is considered in the formulation of the non-uniform current distributions. In the Galerkin's MoM analysis, the Fourier exponential series is considered as the full-domain basis function series. As a result, the current distributions along the hexagonal loops are expressed analytically in terms of the azimuth angle for various sizes of large loops. Finally, an alternative vector analysis of the electromagnetic (EM) fields radiated from thin hexagonal loop antennas of arbitrary length a is introduced. This method which employs the dyadic Green's function (DGF) in the derivation of the EM radiated fields makes the analysis general, compact and straightforward in both near- and far-zones. The EM radiated fields are expressed in terms of the vector wave eigenfunctions. Not only the exact solution of the EM fields in the near and far zones outside a are derived by use of the spherical Bessel and Hankel functions of the first kind respectively, but also the inner regions between √3a/2 and a are characterized by both the spherical Bessel and Hankel functions of the first kind. Validity of the numerical results is discussed and clarified.
Source Title: Journal of Electromagnetic Waves and Applications
URI: http://scholarbank.nus.edu.sg/handle/10635/62407
ISSN: 09205071
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

14
checked on Dec 8, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.