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End-Fire Radiation from Planar and Large Cylindrical Arrays
RAYTHEON CO BEDFORD MA BEDFORD LABS
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Endfire radiation in planar finite arrays of circular apertures in apertures in triangular arrangement is investigated by using a technique consisting of using the results obtained via the usual infinite array model as a zeroth order approximation of a perturbation procedure. It is shown that finite arrays can be scanned up to 90 degrees from broadside, still retaining substantial radiation. The endfire radiation can be enhanced through an appropriate design of the element feed network. With minor modifications the method can be simply applied to the approximate investigation of the radiation of an array on a cylinder having a large radius in terms of wave-lengths in the axial direction.
APPROVED FOR PUBLIC RELEASE