The input impedance of a probefed rectangular cavity which transmits through a plasmacovered cylindrical body
Abstract
A methodofmoments solution for the input impedance of a probefed cavity which radiates through a plasmacovered cylindrical body is presented. A general description of the methodofmoments solution and cylindrical aperture analysis is given. Mathematical expressions are given for the cylindrical aperture admittances. Numerical examples of the input impedance which correspond to cylinders of several different radii have been generated when free space is assumed to cover the antenna aperture and when an inhomogeneous plasma is assumed to cover the antenna aperture. The analysis shows that, for the specific freespace and plasma examples, the input impedance differed little from that of a ground plane antenna, even when the radius of the cylinder was relatively small.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 August 1988
 DOI:
 10.1109/8.7230
 Bibcode:
 1988ITAP...36.1157J
 Keywords:

 Antenna Design;
 Impedance Measurement;
 Missile Antennas;
 Plasma Sheaths;
 Apertures;
 Cylindrical Bodies;
 Communications and Radar