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A new technique is described for obtaining circular polarization from a biconical horn. This polarization is obtained through use of a spatial array of thin conducting elements between the cone faces; orientation of the elements varies with distance from the feed. The method has been used successfully atSband andXband. This technique was applied to horns which have maximum radiation intensity in the plane normal to the cone axes as well as to other horns with beams tilted out of this plane. The beam tilt was obtained by an appropriate choice of cone configurations.
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Goatley et al. (1956) studied this question.
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