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Wireless energy harvesting system with beamforming capabilities, A
Schemmel, Daniel
Schemmel, Daniel
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2017
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Abstract
The development of the Internet of Things (IoT) using wireless motes has perpetuated the demand for self-sufficient electronics. Recently, this demand is being fulfilled with the development of wireless energy harvesters, which eliminates the need for power cords and the manual recharging or replacement of batteries. This work proposes an energy harvesting system for 5.8 GHz operation that utilizes an eight-element patch antenna array with a 20 dB Taylor taper that could be modified for beam scanning and focusing. The use of this array increases the receiver gain, and thus the rectifier efficiency, compared to harvesters with a single antenna. The major subsystems of the energy harvester, such as the antenna array, corresponding feed network, and multi-stage Dickson multiplier, are designed and simulated in software. The outlined design procedure for each of these subsystems is intended to serve as a guide and starting point for future wireless energy harvesting designs.
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