The admittance of bare circular loop antennas in a dissipative medium

Author

King, R.W.P. ; Harrison, C.W., Jr. ; Tingley, D.G.

Author_Institution

Harvard University, Cambridge, MA, USA

Volume

12

Issue

4

fYear

1964

fDate

7/1/1964 12:00:00 AM

Firstpage

434

Lastpage

438

Abstract

The normalized input admittance of thin bare circular loop antennas has been evaluated from the theory of T. T. Wu. Computations have been made for loops in air and in an infinite homogeneous isotropic dissipative medium. A comparison is also made with Storer\´s theory of the loop. Numerical results are given in the form of graphs for several wire sizes and for loops up to two and one-half wavelengths in circumference. The properties of the medium are represented by the ratio $\\alpha /\\beta$ in the range from zero (perfect dielectric) to one (good conductor); $\\alpha$ and $\\beta$ are the imaginary and real parts of the complex propagation constant $k=\\beta -j\\alpha = \\omega \\sqrt {\\mu(\\epsilon-j\\sigma /\\omega )}$ where $\\mu$ is the permeability, $\\epsilon$ the dielectric constant, and $\\sigma$ the conductivity of the medium.

Keywords

Buried antennas; Loop antennas; Admittance; Antenna theory; Conductors; Dielectrics; Fourier series; Permeability; Propagation constant; Receiving antennas; Transmitting antennas; Wire;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.1964.1138244

Filename

1138244