Accession Number:

AD0425300

Title:

SLOT ANTENNA IMPEDANCE FOR PLASMA LAYERS,

Descriptive Note:

Corporate Author:

SYLVANIA ELECTRIC PRODUCTS INC WALTHAM MASS

Personal Author(s):

Report Date:

1963-08-01

Pagination or Media Count:

55.0

Abstract:

The rectangular cavity or waveguide backed slot is covered by a plasma layer of finite thickness. The longitudinal variation of the voltage across the slot is obtained from the variational sol4tion of an integral equation. The solution for plasma layer of finite thickness is obtained from the free space Greens function by the method of images. The fields outside the slot depend on the surface integral of the fields over the slot plane and over the surface of the plasma layer. If the thickness of the plasma layer is large compared with the wavelength, the fields on the surface of the plasma may be related to the voltage distribution along the slot by plane wave reflection coefficients. This leads to an integral equation that is reduced to a form suitable for machine computations. These calculations show the slot admittance to remain almost constant for plasma layers of various thickness h. The slot conductance tends to increase for hlambda less than 0.5. The presence of a plasma layer affects the voltage distribution along the slot for a center excited slot differs only slightly from the principal mode field distribution in the guide. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE