DocumentCode :
987897
Title :
Antenna impedance in a reentry environment
Author :
Mayhan, John W. ; Caldecott, Ross ; Bohley, Peter
Author_Institution :
Ohio State Univ., Columbus, OH, USA
Volume :
16
Issue :
5
fYear :
1968
fDate :
9/1/1968 12:00:00 AM
Firstpage :
573
Lastpage :
577
Abstract :
In-flight measurements of the impedance of C - and S -band waveguides radiating into a reentry plasma are compared with computed data. The vehicle utilized for the experiment was the Trailblazer II. The measurements were made during the reentry portion of the flight and received by X -band telemetry. The computed data are obtained from the variational formulation for aperture admittance of waveguides radiating into an inhomogeneons plasma medium. The dominant TE10mode is assumed to exist over the aperture. The form employed here utilizes the piecewise solution of Riccatti equations which permits rapid evaluation of the resulting equation for the admittance.
Keywords :
Electromagnetic propagation in plasma media; Plasma-covered antennas; Space-vehicle reentry; Waveguide antennas; Admittance; Antenna measurements; Apertures; Equations; Impedance measurement; Plasma measurements; Plasma waves; Telemetry; Tellurium; Vehicles;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1968.1139245
Filename :
1139245
Link To Document :
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