A design method for dual-polarization orbital angular momentum state multiplexing metasurface

Abstract

The invention discloses a design method for a dual-polarized orbital angular momentum state multiplexing metasurface, which belongs to the field of electromagnetics; specifically, firstly, an anisotropic unit of a dual-polarized reflective metasurface is designed, the unit structure is simulated, and the unit structure size is established The corresponding relationship with the reflection phase; then, design a metasurface for a beam of dual-polarized electromagnetic waves, modulate the incident wave into a vortex electromagnetic wave, and deflect it to a direction perpendicular to the metasurface, and calculate the conditions that the metasurface reflection phase needs to meet; based on Therefore, for multiple beams of dual-polarized electromagnetic waves with different incident angles, they are simultaneously modulated into vortex electromagnetic waves and deflected to the same direction perpendicular to the metasurface, and the conditions that need to be satisfied by the reflection phase of the metasurface when coaxial output is calculated are calculated; Finally, the incident direction of multiple beams of electromagnetic waves is set, and the phase distribution of each unit of the metasurface is used to model, and the dual-polarized orbital angular momentum state multiplexing metasurface is obtained for verification. The unit structure of the invention is simple, and the function is easy to realize.

Description

Technical field [0001] The present invention belongs to the field of electromagnetic field involving microwave radio frequency techniques, and is specifically a design method of a double polarization track angle moving state multiplete surface. Background technique [0002] With the rise of the Internet and intelligent terminals, the business demand for mobile communications has grown sharply, and the requirements for indicators such as data transmission rates, transmission delays, and throughput of wireless communication systems are constantly improving. However, the high-quality spectrum resources in low frequency bands are very limited, and only the new spectrum has been difficult to meet the new needs of communications. At present, the shortage of spectrum resources make existing wireless communication technologies unable to meet the needs of social development, so the potential for exploiting wireless communication technology in the microwave millimeter wave band is of great...

AI Technical Summary

Problems solved by technology

However, in the application of electromagnetic wave orbital angular momentum multiplexing in the microwave frequency band, the current generation method cannot simultaneously generate coaxially transmitted electromagnetic waves carrying multi-modal orbital angular momentum

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