A newly synthesis method of planar array antenna for wireless power transmission (WPT) is introduced in this paper. The whole array aperture is divided into several subarrays which can reduce the complexity of the feed network and the cost of the array antenna. Invasive Weed Optimization (IWO) algorithm is used to optimize the subarray division and the excitation amplitude of each subarray. The maximum beam collection efficiency (BCE) and maximum sidelobe level outside the receiving area(CSL) are considered as the evaluation index. The synthesis results show that the proposed method can obtain higher BCE and lower CSL.
A new synthesis method of linear array antenna for wireless power transmission is introduced based on invasive weed algorithm in this paper. In order to improve the beam collection efficiency, the subarray division is carried out in the case of different azimuth angles and different numbers of array elements, respectively. Under the constraints of aperture size and minimum element spacing, the element positions, excitation coefficients, and the element numbers of subarrays are optimized simultaneously. Compared with the optimization results obtained by other literature, it can be found that the proposed method in this paper can obtain a higher beam collection efficiency.
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