Electrostatic resonance-cone waves emitted by a dipole in the ionosphere

Author

James, H. Gordon

Author_Institution

Commun. Res. Centre, Ottawa, Ont., Canada

Volume

48

Issue

9

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

1340

Lastpage

1348

Abstract

The theory of whistler-mode radiation from a dipole antenna has been tested in the ionospheric sounding-rocket experiment OEDIPUS-C (OC). In this bistatic investigation, 25-kHz waves were received at a distance of 1200 m from a synchronized transmitter. Electric fields near the group resonance cone were significantly stronger than in other directions, as predicted by theory. The transmitting antenna RF current was obtained from an equivalent circuit including an antenna impedance predicted by quasistatic theory. This current was applied to resonance-cone radiation theory. Observed radiated levels are about a hundred times greater than theoretical predictions based on some assumptions about the electromagnetics of the transmitting and receiving antennas. The modulation of the received signal caused by the spins of the transmitting and receiving dipoles was consistent with the electric field being polarized predominantly along the electrostatic wave-vector direction

Keywords

antenna radiation patterns; dipole antennas; electric fields; electromagnetic wave polarisation; equivalent circuits; ionospheric electromagnetic wave propagation; ionospheric techniques; plasma electrostatic waves; radiowave propagation; receiving antennas; resonance; transmitting antennas; whistlers; 1200 m; 25 kHz; OEDIPUS-C; antenna impedance; bistatic investigation; dipole antenna; distance; electric fields; electromagnetics; electrostatic resonance-cone waves; electrostatic wave-vector direction; equivalent circuit; group resonance cone; ionosphere; ionospheric sounding-rocket experiment; polarized electric field; quasistatic theory; radiated levels; received signal modulation; receiving antennas; receiving dipole; resonance-cone radiation theory; synchronized transmitter; transmitting antenna RF current; transmitting dipole; whistler-mode radiation; Acoustic testing; Antenna theory; Dipole antennas; Electrostatics; Equivalent circuits; Impedance; Radio frequency; Resonance; Transmitters; Transmitting antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.898766

Filename

898766