Same-frequency and co-polarization full-space programmable metasurface unit

By loading and adjusting the bias voltage of the diode on the full-space programmable metasurface unit, independently controlling the phase of transmitted and reflected electromagnetic waves, and ensuring that they have the same polarization state at the same frequency, the problem of full-space electromagnetic field regulation in the prior art is solved, and efficient electromagnetic wave regulation and simplified receiver equipment are achieved.

CN120016165AActive Publication Date: 2025-05-16SOUTHEAST UNIV
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Patent Information

Application Number
CN202510183170.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-05-16
Estimated Expiration
2045-02-19

AI Technical Summary

Technical Problem

The existing full-space programmable metasurface units are difficult to independently regulate the phases of transmitted electromagnetic waves and reflected electromagnetic waves at the same frequency, and cannot guarantee that the transmitted and reflected waves have the same polarization state.

Method used

By loading diodes Dtop and diodes D1, D2, D3 and D4 on the metasurface unit, and adjusting the bias voltages of these diodes, independently controlling the reflected phase and transmittance phase, 1-bit phase regulation of transmitted and reflected electromagnetic waves is achieved, and it is ensured that they have the same polarization state in the 4.75GHz frequency band.

Benefits of technology

The independent phase regulation of transmitted and reflected electromagnetic waves at the same frequency is realized, and their polarization is ensured consistent, simplifying the complexity of the receiving end equipment, while improving the transmittance and reflectivity.

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Abstract

The invention relates to a same-frequency and same-polarization full-space programmable metasurface unit, which comprises two layers of dielectric substrates and a metal structure which are sequentially arranged, the two dielectric substrates are separated by air, and the metal structure comprises two metal gratings with an included angle of 90 degrees and two metal resonance structures. Five diodes, namely Dtop, D1, D2, D3 and D4, are integrated in the metal resonance junction, and the conduction and cut-off of the diodes can be controlled by an external direct current voltage, so that the independent control on the phases of transmission electromagnetic waves and reflection electromagnetic waves is realized. Wherein the state of the Dtop controls the reflection phase; the states of D1, D2, D3 and D4 control the transmission phase. Independent regulation and control of transmission and reflection phases of electromagnetic waves under the frequency of 4.75 GHz are achieved, it is guaranteed that reflected electromagnetic waves and transmitted electromagnetic waves have the same polarization characteristic, it is guaranteed that the transmissivity and the reflectivity are larger than-3dB at the same time, and the method is applied to the fields of total-space beam regulation and control, wireless communication and the like.
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Citation Information

Patent Citations

  • Independent control of the magnitude and phase of a reflected electromagnetic wave through coupled resonators

    CA3196718A1

  • Intelligent incident wave direction detection method based on phase regulation metasurface

    CN113093094A

  • Transflective metasurface device with sub-wavelength structure, beam scanning antenna and scanning method

    CN114267956A

  • Multi-polarization reconfigurable metasurface integrated device and control method thereof

    CN114597663A

  • Multifunctional multi-frequency multiplexing coding metasurface in transmission and reflection modes

    CN116207506A