Abstract
It has been shown that a partially reflective surface (PRS) antenna with a larger reflection magnitude has a higher antenna gain, based on practical design examples. In this paper, PRS antennas with different reflection magnitudes are analyzed using an intuitive ray-tracing model. It is derived that the larger reflection magnitude enables a smaller phase delay and a more uniform magnitude distribution across the PRS, which leads to a superior gain. The antennas with different reflection magnitudes were simulated in a full-wave solver to verify the derivation. The simulated phase and magnitude distributions of the PRS antennas agree with the predicted trends from ray-tracing.
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