A circularly polarized antenna array with large angle scanning based on sequential rotation method is proposed in the thesis, the antenna array is fed through the H-type slit coupling, the radiating patch is selected to be square patch and on the basis of which the 8×8 array is divided into four subarrays by taking sequential rotation method to realize circular polarization. The antenna array can be scanned within <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">± 60^∘</tex> , this thesis selects 0°, 45° and 60° for example, in the case of 0°, 45° gain can reach more than 20dB, cross-polarization is greater than −20dB, in the case of 60° gain is more than 18dB, cross-polarization is greater than −15dB, Ideally, in the 8 to 12GHz to meet the requirements of the axial ratio of the bandwidth of 3dB.
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Nie et al. (2024) studied this question.
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