A method for computing the input conductance of an electrically small antenna

Author

Chang, David C. ; Rispin, Lawrence W.

Author_Institution

Univ. of Colorado, Boulder, CO, USA

Volume

Issue

fYear

1980

fDate

5/1/1980 12:00:00 AM

Firstpage

404

Lastpage

406

Abstract

An expression based upon the effective aperture area of an antenna is derived which relates the input conductance at the feed point to an integral involving the magnitude of the short circuit current at the same point when the antenna is used as a receiving element. Using this relationship the input conductance for an evanescent $TM_{01}$ circular waveguide mode inside and near the end of a finite-length thin ( $\\Omega = 2 \\ln (2h/a) = 10$ ) cylinder is calculated over a wide range of electrical lengths including those for which the antenna is very short to those on the same order of a free-space wavelength, specifically $kh = 0.05 \\to 3.5$ .

Keywords

Antennas; Cylindrical antennas; Admittance; Antenna feeds; Aperture antennas; Equivalent circuits; Frequency; Geometry; Loaded antennas; Receiving antennas; Short circuit currents; Voltage;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1980.1142341

Filename

1142341

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1019769