Omnidirectional three-dimensional beam control reconfigurable intelligent surface system and beam alignment method

Abstract

This application relates to an omnidirectional three-dimensional beam-controlled reconfigurable smart surface system and a beam alignment method. Different operating modes correspond to one or more system units, each including a Luneburg lens, a hemispherical antenna array, and a reconfigurable RF switch circuit. During the sensing phase, the reconfigurable RF switch circuit determines the optimal receiving antenna unit and the optimal transmitting beam angle between the system and the signal source based on the signals received by each antenna unit, thus achieving beam alignment. During the relay phase, the optimal receiving antenna unit receives the signal transmitted by the signal source at the optimal beam angle and transmits the signal to the target direction through other antenna units. This application, while maintaining simple hardware and control logic, eliminates the scanning loss of traditional planar RIS at large angles, achieves omnidirectional high-gain coverage with an ultra-large field of view greater than ±80°, and supports in-situ power measurement, effectively solving the coverage dead zone problem in high-frequency wireless communication networks.

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