| Summary: | 碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 102 === Wireless charger for far range, it uses band at 2.45 GHz, we always use this band. Array antenna gain is higher than single antenna, and it has high directive gain. We need to design an array to isolate interference form the other system. At near field focused we can get higher power density. The radiation near field range is direct ratio to dimension of the antenna. So we can use array to get the bigger ranger with radiating near field. There propose a new near field focused array. In input network of array add some phase shifters. This way can change the focused plane. The element use circularly polarized patch antenna, operating frequency is 2.45 GHz. This array use one fed, it will easy to control the phase. The input network made by power divides and phase shifters, In order to reconfigurable focused plane, so we design a phase shifter. This phase shifter uses voltage to control the phase.
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