Abstract
The frequency diverse array (FDA) is a promising technology owing to its angle-range-dependent beam pattern. The FDA possesses unique properties such as beam scanning and focusing, which are difficult to achieve using the conventional phased antenna array theory. Herein, the relationship between range and frequency increment was analyzed, and the fundamental operation principle of FDA was investigated. Further, a novel exponential FDA method for short-range beam focusing was presented based on the proposed FDA analysis method. The proposed method was investigated through various case studies and applied to research efforts on FDA methods.
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