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Effect of lossy ground on performance of planar and cylindrical arrays
Author(s) -
Stalzer Henry J.,
Fathy Ali,
Hessel Alexander,
Shmoys Jerry
Publication year - 1990
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs025i002p00133
Subject(s) - lossy compression , planar , lossless compression , galerkin method , electrical impedance , optics , surface (topology) , mathematics , acoustics , finite element method , geometry , physics , computer science , algorithm , statistics , computer graphics (images) , quantum mechanics , data compression , thermodynamics
A method for the analysis of infinite planar circular cylindrical phased arrays of waveguide fed apertures embedded in a lossy surface is presented. Use is made of the surface impedance concept and an appropriate equivalence principle to reduce considerably the number of simultaneous equations arising in the Galerkin procedure. Numerical results for the matched element gain pattern are presented for circular feed waveguides and compared with the lossless case.