AN EXPERIMENTAL STUDY OF SIMULATED PLASMA-COVERED SLOTS.
Abstract
The effect of a lossless isotropic plasma on the admittance of a waveguide slot terminating in a ground plane has been studied by means of a plasma simulation technique. The relative dielectric constant between the plasma and freespace was maintained by using two contiguous real dielectric materials. Freespace was simulated by an alumina powder of high dielectric constant, and the plasma by a material of lower dielectric constant. The admittance of the slot radiator was measured by (a) a direct method, (b) Deschamps' method, (c) a tuner method. All three gave similar results. Experimental values were determined for the normalized aperture admittance of a slot covered by a simulated plasma of thickness varying from asymptotically equal to 0.1 in. to infinity. The results showed good agreement with theory. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1968
- Accession Number
- AD0669804
Entities
People
- J. D. Antonucci
- N. V. Karas
Organizations
- Air Force Cambridge Research Laboratories