Abstract
The evaluation of the performance of density‐tapered arrays may be made in simple terms and based on the simple concept of dividing the total input power into a “design” component and a “hash” component of radiation. The design component is the nominal directive radiation pattern that would result from the continuous aperture excitation of the array; the hash component is the wide‐angle radiation that results from the gaps in the aperture excitation required in density tapering.The parameters evaluated include antenna gain, number of active and inactive (dummy) elements, and the level of hash radiation. Density tapering is compared with amplitude tapering, and formulas are summarized for convenient reference. Examples of particular low side‐lobe taper functions have been computed, and the results are tabulated.
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