Accession Number : AD0760129

Title :   Radiation from Slot-Fed Dielectric Slabs,

Corporate Author : HUGHES AIRCRAFT CO CULVER CITY CALIF ANTENNA DEPT

Personal Author(s) : Villeneuve,Alfred T.

Report Date : DEC 1972

Pagination or Media Count : 58

Abstract : The report contains analyses of the radiation characteristics of grounded dielectric slabs fed by slots in the groundplane. Two configurations are examined, one in which a semi-infinite slab covers the slot, a second in which a finite slab does not extend over the slot. The slots are parallel to the slab edges so that only TM mode propagation is considered. Integral equations are derived for the fields at the ends of the slabs and approximate solutions are obtained. Numerical results in the form of radiation patterns are given for the case of the semi-infinite slab. It is found that the feed pattern is very close to the space-wave that would exist if the slab were infinite, but differs from it in the region near the horizon. The results can be applied to studies of electronic scanning of finite arrays of slots in the presence of surface wave structures. Recommendations for further study are included. (Author)

Descriptors :   (*AIRCRAFT ANTENNAS, THEORY), (*PHASED ARRAYS, *DIELECTRICS), SCANNING, ANTENNA RADIATION PATTERNS, INTEGRAL EQUATIONS, ELECTROMAGNETIC FIELDS

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE