Accession Number : ADA324869

Title :   EPSCoR Support of Graduate Student Research on the Modified Diakoptic Theory.

Descriptive Note : Final rept. 20 Jul 92-31 Dec 96,

Corporate Author : CLEMSON UNIV SC DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s) : Butler, Chalmers M.

PDF Url : ADA324869

Report Date : 01 APR 1997

Pagination or Media Count : 4

Abstract : An analysis and an experimental study of a stripline-fed slot antenna are reported. A slot in a planar conducting surface is backed by a rectangular waveguide below cutoff. A conducting strip in the short-height waveguide constitutes a stripline transmission line that is fed and terminated via coaxial connectors below the surface and provides a means to excite the slot. A numerical method is developed to solve two 'pseudo-mixed' potential integral equations for the electric current on the strip and for the equivalent magnetic current in the slot. The strip in the waveguide and the slot backed by the waveguide are analyzed separately and then the two are combined to form a single antenna element. Green's functions for electric and magnetic current elements in a rectangular waveguide are employed in their spectral and spatial representations, and Shanks' transform is used to speed up the convergence of the doubly infinite series. Numerical and experimental results are presented for the separate analyses of the stripline, the center-fed slot backed by the waveguide, and the stripline-fed slot antenna.

Descriptors :   *WAVEGUIDES, *STRIP TRANSMISSION LINES, *PHASED ARRAYS, *ANTENNA COMPONENTS, SPATIAL DISTRIBUTION, MAGNETIC FIELDS, NUMERICAL ANALYSIS, COAXIAL CONFIGURATIONS, SPECTRA, INFINITE SERIES, ELECTRIC CURRENT, MAGNETIC DEVICES, GREENS FUNCTIONS, ANTENNA RADIATION PATTERNS, ELECTRIC CONNECTORS.

Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE