Sidelobe-Reduction and Interference-Suppression Techniques for Phased Arrays Using Digital Phase Shifters.

摘要

Through the introduction of a new parameter the radiation pattern of a phased array using digital phase shifters for beam steering can be made periodic and pattern considerations can be confined to a very narrow range of the scan angle. Arrays designed on the basis of a least mean-squared pattern error are shown to require the smallest absolute values of a phase-index function. A systematic and easy-to-apply method is developed for reducing the peak sidelobes of nonreciprocal phased arrays by one-step phase adjustments in certain elements. (Author)