Equivalent circuit of a dipole antenna using frequency-independent lumped elements

Author

Tang, Tee G. ; Tieng, Quang M. ; Gunn, Moms W.

Author_Institution

Sch. of Electr. & Electron. Syst. Eng., Queensland Univ. of Technol., Brisbane, Qld., Australia

Volume

41

Issue

1

fYear

1993

fDate

1/1/1993 12:00:00 AM

Firstpage

100

Lastpage

103

Abstract

A four-element lumped-parameter equivalent circuit, consisting of a resistance, an inductance, and two capacitances, has been found to represent the feed-point impedance of a dipole antenna. The values of these elements are related only to the physical dimensions of the antenna, not the frequency of operation. Empirical formulas are given for all the elements. The equivalent circuit gives negligible errors in radiation resistance and reactance for dipole half-lengths less than 0.1λ, rising to 1% for resistance and 6% for reactance at 0.25λ. It can be readily used in standard computer software packages such as SPICE, PSPICE, and MICROCAP

Keywords

antenna theory; dipole antennas; electric impedance; equivalent circuits; lumped parameter networks; MICROCAP; PSPICE; SPICE; capacitance; computer software packages; dipole antenna; feed-point impedance; four-element lumped-parameter equivalent circuit; frequency-independent lumped elements; inductance; radiation resistance; reactance; resistance; Antenna feeds; Capacitance; Computer errors; Dipole antennas; Equivalent circuits; Frequency; Impedance; Inductance; SPICE; Software standards;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.210122

Filename

210122