Accession Number : AD0612511

Title :   EFFECTIVE LENGTHS OF ANTENNAS IN MAGNETOIONIC MEDIA.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Faust,William R.

Report Date : 12 FEB 1965

Pagination or Media Count : 10

Abstract : The voltages induced in dipoles and loop antennas immersed in a magneto-active plasma are calculated using the Rayleigh-Carson theorem for magneto-active media as derived in NRL Report (AD-610 009). The voltage induced is given in terms of an effective length times the applied electric field, and in the present case the tensor dielectric character of the magneto-ionic medium complicates the effective length calculations. A first approximation for the effective length of a linear dipole in a magnetoactive plasma is derived which can be used if the antenna is short. Because loop antennas are also used in ionospheric propagation experiments, the ratio of the voltage induced in a small loop antenna to that induced in a dipole antenna is derived. (Author)

Descriptors :   (*ANTENNAS, IONOSPHERIC PROPAGATION), (*IONOSPHERIC PROPAGATION, ANTENNAS), SATELLITE ANTENNAS, ELECTRICAL PROPERTIES, PLASMAS(PHYSICS), IONOSPHERE, RADIO WAVES, PROPAGATION, THEORY, MATHEMATICAL ANALYSIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE