B S Westcott and F Brickell 1979 J. Phys. D: Appl. Phys. 12 169 doi:10.1088/0022-3727/12/2/004
B S Westcott and F Brickell
Show affiliationsThe problem of shaping dual offset reflectors, fed by a linearly polarised rotationally symmetric feed horn, to produce a parallel beam over a non-circular aperture with zero cross-polarisation, is considered under the assumptions of geometrical optics. The condition for zero cross-polarisation leads to a partial differential equation, which hitherto has been solved numerically, but is shown here to possess an analytical solution. For uniqueness an additional constraint is put on systems with a plane of symmetry by prescribing the power distribution along the aperture line of symmetry. A suitable choice yields a uniform aperture edge illumination.
42.79.Fm Reflectors, beam splitters, and deflectors
Issue 2 (1 February 1979)
B S Westcott and F Brickell 1979 J. Phys. D: Appl. Phys. 12 169
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