Spectral domain analysis of square spiral microstrip antennas

Author

Shively, D.

Author_Institution

US NASA Langley Res. Center, Hampton, VA, USA

fYear

1993

fDate

June 28 1993-July 2 1993

Firstpage

1466

Abstract

A square spiral placed on a dielectric slab which is backed by a ground plane is analyzed. The spectral domain Green´s functions for a current element on a grounded dielectric slab are used to develop an integral equation which is solved by the method of moments. In this formulation, the effects of the dielectric material are rigorously modeled. The current density on one arm of the square microstrip spiral at 6.0 GHz is shown as a function of subdomain number and compares favorably to the results found in H. Nakano et al. (1986) for the Archimedean spiral. The gain, axial ratio, and input impedance of the square microstrip spiral are shown as functions of frequency and also compare favorably to the results for the Archimedean spiral.<>

Keywords

Green´s function methods; current density; current distribution; dielectric-loaded antennas; electric impedance; frequency response; integral equations; method of moments; microstrip antennas; spectral-domain analysis; spiral antennas; 6 GHz; SHF; axial ratio; current density; dielectric slab; gain; ground plane; input impedance; integral equation; method of moments; spectral domain Green´s functions; square spiral microstrip antennas; subdomain number; Current density; Dielectric materials; Green´s function methods; Impedance; Integral equations; Microstrip antennas; Moment methods; Slabs; Spectral analysis; Spirals;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1993. AP-S. Digest

Conference_Location

Ann Arbor, MI, USA

Print_ISBN

0-7803-1246-5

Type

conf

DOI

10.1109/APS.1993.385471

Filename

385471