Influence Analysis of Circular Polarization Characteristics of Sequential Rotating Array Antenna
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There are three main factors affecting the circular polarization characteristics of the sequential rotating array: the polarization characteristics of the element, the feed amplitude ratio, and the feed phase difference. This paper takes the four-element array as an example to study the circular polarization properties influences of the array. The results show that the circular polarization performance of the array is better than that of the linear polarization unit when the circularly polarized element is used; the circular polarization performance of the four-element array becomes worse as the feed amplitude deviates from the amplitude equilibrium position; the circular polarization of the four-element array becomes worse as the feed phase difference deviates from the phase equilibrium position.
KeywordsSequential rotating array Circular polarization characteristics Feed amplitude ratio Feed phase difference
The paper is supported by the National Natural-Science Foundation of China (Grant No. 61701527, 61601499) and the National Natural-Science Foundation of Shaanxi Province (Grant No. 2019JQ-583,2018JQ6023).
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