[天线]75 Vector Diffraction Analysis of Reflector Antennas with Mesh Surfaces

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. AP-33, NO. 1, JANUARY 1985 -g)9R%>
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Vector Diffraction Analysis of Reflector Antennas with Mesh Surfaces og4UhP^UET  
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YMYA UHMAT-SAMII, FELLOW, IEEE, AND SHUNG-WU LEE, FELLOW, IEEE yPM3a7-Bm  
Abstract-Reflector antennas with mesh surfaces are used extensively in za#s/b$[  
many satellite and ground antenna systems. A strip-aperture modeling of U QE qX  
commonly used mesh surfaces is presented which provides considerable 1D16  
versatility in characterizing the mesh cells. The mesh transmission coefficients ag$Vgl  
are constructed using a Floquet-modal expansion in conjuction C?ulj9=Z  
with two dominant aperture modes. To account for the mesh F1iGMf-8  
local coordinates, the Enlerian angle transformation is invoked to obtain ?/TSi0R  
the total induced current on the curved reflector surface. General formulas 'iy*^A `Y  
are presented to show how the solid snrface induced current is modified Tskq)NU  
due to the transmission throught he mesh. The effects of a variety of mesh 0ph{  
configurations on both the eo-polar and cross-polar patterns of reflector 0- ><q  
antennas are studied by numerically evaluating the vector diffraction Q=BZ N]g2  
integral using the Jacobi-Bessel expansion. For some special cases, a MzPzqm<  
comparison is made with the resnlts of the commonly used wire-grid r
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formulation. Many of the numeric .. ANvRi+ _  
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