Measurement techniques for antennas in dissipative media

Author

Scott, Larry D. ; Smith, Glenn S.

Author_Institution

Mission Research Corporation, Albuquerque, NM, USA

Volume

21

Issue

4

fYear

1973

fDate

7/1/1973 12:00:00 AM

Firstpage

499

Lastpage

507

Abstract

Methods used to simulate dissipative media environments for antennas are reported and special techniques developed to determine the electrical properties of antennas in such media are discussed. Tank systems for simulating infinite homogeneous isotropic media characterized by ratios of $\\alpha /\\beta$ in the range $0 < \\alpha /\\beta < 1.0$ are described along with the apparatus for determining the constitutive parameters $\\sigma$ and $\\epsilon$ of the media. A new device for measuring antenna input admittance is presented which permits a simple measurement of admittance over a broad frequency range where conventional methods are cumbersome in field use. Apparatus for measuring antenna current and charge distributions is described together with a discussion of the associated probing errors. Measured admittances and current and charge distributions are compared with current theories for thin wire linear and loop antennas in the dissipative media and are found to be in good agreement.

Keywords

Antenna measurements; Buried antennas; Admittance measurement; Antenna measurements; Antenna theory; Charge measurement; Current measurement; Frequency measurement; Laboratories; Measurement techniques; Wavelength measurement; Wire;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1973.1140536

Filename

1140536