DocumentCode
1001307
Title
Impedance and large signal excitation of satellite-borne antennas in the ionosphere
Author
Baker, Dennis J. ; Weil, Herschel ; Bearce, Loren S.
Author_Institution
Naval Research Lab., Washington, D. C., USA
Volume
21
Issue
5
fYear
1973
fDate
9/1/1973 12:00:00 AM
Firstpage
672
Lastpage
679
Abstract
The input impedance of a spacecraft-borne electric antenna operating below approximately 30 kHz in the ionosphere is investigated with emphasis on sheath effects. The impedance concept is generalized to be applicable to nonlinear antenna-magnetoplasma systems. Explicit formulas are obtained for the generalized impedance of a near cylindrical antenna taking into account the effects of large signal excitation, induced electromotive forces due to antenna motion across the Earth´s magnetic field, the influence of the ion collection surface of the space vehicle, and of dc bias between antenna and vehicle. Comparison is made of the pertinent part of the theory and LOFTI-IIA satellite data.
Keywords
Ionosphere; Plasma-covered antennas; Satellite antennas; VLF antennas; Antenna measurements; Antenna radiation patterns; Antennas and propagation; Dipole antennas; Electromagnetic scattering; Ionosphere; Notice of Violation; Radar scattering; Satellite antennas; Surface impedance;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/TAP.1973.1140550
Filename
1140550
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