Surface series-expansion coefficients for numerical design of scannable aspherical microwave and acoustic lenticular antennas

1 January 1974

journal article
Published by Institution of Engineering and Technology (IET) in Proceedings of the Institution of Electrical Engineers

Vol. 121 (11) , 1351-1354
https://doi.org/10.1049/piee.1974.0282

Abstract

Normalised series-expansion coefficients are presented for the numerical design of the surfaces of extremely short-focal-length/wide angle asperical scanning lens antennas with symmetrical off-axis focal points. Based on theoretical techniques previously developed for the problem, the normalised numerical results presented assume an index of refraction of 1.594 and a fixed off-axis angle of 20° for design purposes. Included also are curves of certain related design parameters, and information on lens-antenna performance characteristics in the form of typical scanning diffraction patterns for radiation or reception. Some worked examples are given.

Keywords

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