Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 71, Issue 2, Pages 1437-1447Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2022.3226155
Keywords
Time-frequency analysis; Frequency diversity; Phased arrays; Focusing; Electromagnetics; Meters; Couplings; Exponentially increasing frequency increment; frequency-diverse array (FDA); periodicity; quasi-pulse wave; standard deviation of frequency increment (SDFI); wireless power transfer (WPT)
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The frequency-diverse array (FDA) is a promising technology due to its angle- and range-dependent beam pattern. This study analyzed the relationship between range and frequency increment and thoroughly investigated the operation principle of FDA. It also discussed the effect of coupling among antenna elements and proposed a novel exponential FDA method for short-range beam focusing. The design procedures and analysis methods of FDA are also presented in this article.
The frequency-diverse array (FDA) is a promising technology because of its angle- and range-dependent beam pattern. The FDA has unique properties, such as beam scanning and focusing, which are difficult to achieve using the conventional phased antenna array theory. In this study, the relationship between range and frequency increment is analyzed, and the fundamental operation principle of FDA is thoroughly investigated. The effect of coupling among antenna elements is also discussed to analyze the FDA theory. Furthermore, a novel exponential FDA method for short-range beam focusing is presented based on the proposed FDA analysis method. The proposed method has been investigated through various case studies and applied to research efforts on FDA methods. The FDA design procedures and analysis methods are also presented in this article.
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