Holographic transmit reflect array at 5.8 GHz for wireless power transfer in the Fresnel Zone
Backer, Emily Mei
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This thesis presents the design and simulation of four square holographic reflectarrays consisting of circular patches for wireless power transfer (WPT) in the Fresnel region. The design includes the calculation of the phase reflection response from different variations of patches and substrate sizes, the calculation of the phase front needed to form a focal point, the simulation of a reference wave, the design of the hologram, and the simulation of the final holographic system. The first set of arrays use FR4 substrate and are made up of 4096, 2304, and 576 number of patch segments arranged in a rectilinear grid, and the last array uses a Rogers substrate and is made up of 4096 patches. These 1.216-meter FR4, 0.912-meter FR4, 0.456-meter FR4, and 1.216-meter Rogers holographic reflectarrays successfully collimate the incoming power into beams at 10-meter, 5-meter, 3-meter, and 10-meter focal points respectively.