The beam squint phenomenon in circular-polarized-feed paraboloidal, Cassegrain, and Gregorian antennas is characterized. The geometrical optics/aperture field method is used to derive generalized squint-predicting formulas, the accuracy of which is verified by computer simulations based on diffraction analysis. From these formulas, the squint-free conditions are developed. An extension of these formulas is suggested to predict the squint angles for general multireflector antennas.>
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Duan et al. (1991) studied this question.
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