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Metasurface-based light-to-microwave hybrid communication transmitter and implementation method thereof

A hybrid communication and metasurface technology, applied in electromagnetic transmitters, electromagnetic wave transmission systems, sustainable communication technology, etc., can solve problems such as difficult wireless communication and slow switching speed

Pending Publication Date: 2022-08-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Photodiode-based light-controllable microwave metasurfaces have been reported before, on which electromagnetic functions can be programmed by visible light, but the scheme of only loading photodiode arrays onto the metasurface is difficult for wireless communication due to the slow switching speed.

Method used

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  • Metasurface-based light-to-microwave hybrid communication transmitter and implementation method thereof
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  • Metasurface-based light-to-microwave hybrid communication transmitter and implementation method thereof

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Embodiment Construction

[0026] The present invention will be further explained below in conjunction with the accompanying drawings.

[0027] The present invention designs and manufactures a light-to-microwave hybrid communication transmitter based on a metasurface. First, a broadband time-domain metasurface unit is designed with a special metal pattern and carefully dimensioned so that it can produce a reflection phase difference of about 360° in a broad microwave frequency band. The metal pattern on the surface of the unit integrates four varactors, which change the reflection phase by controlling the bias voltage across the varactors. Arrays of n×n metasurface units are used to form a time-domain reflection metasurface array. Each metasurface unit in the array has the same size and is regulated by the same control waveform. The photoelectric detection circuit is integrated on the back of the metasurface array, and the output terminal is connected to each unit of the array to provide a control volt...

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Abstract

The invention discloses a metasurface-based light-to-microwave hybrid communication transmitter and an implementation method thereof.The metasurface transmitter comprises a time domain reflection type metasurface array and a photoelectric detection circuit on the back face, and the time domain reflection type metasurface array is formed by arranging metasurface units; each metasurface unit sequentially comprises a variable capacitance diode, a surface metal pattern, a dielectric layer and a bottom layer metal floor from top to bottom, the surface metal pattern is composed of four 90-degree rotationally symmetrical trapezoidal metal sheets and a middle square metal sheet, and the four same variable capacitance diodes are used for connecting the trapezoidal metal sheets and the square metal sheet; and the photoelectric detection circuit is arranged on the back surface of the metasurface array, consists of a photodiode and two amplification circuits, and is used for detecting an optical signal and providing a control signal for the metasurface array. The transmitter can generate certain microwave reflection harmonic distribution under the irradiation of specific light, so that optical signals are directly mapped to microwave signals, and hybrid wireless communication is realized.

Description

technical field [0001] The invention relates to a light-to-microwave hybrid communication transmitter based on a metasurface and a realization method thereof. It belongs to the technical field of optical domain and radio frequency conversion to realize optical communication and radio frequency communication. Background technique [0002] The signal conversion between the optical domain and the radio frequency (RF) domain is the basis and key to realize the hybrid system of optical communication and radio frequency communication technology. Hybrid optical and radio frequency communication systems can unlock the limitations of individual systems and offer their positive characteristics, which are considered a promising way to support multi-domain integration and full-spectrum networks for future sixth-generation (6G) wireless communications . So far, hybrid communications have typically been achieved through cooperative relay systems, where the received optical signal (or RF...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/071H04B10/079H04B10/116H04B10/54H04B10/556
CPCH04B10/071H04B10/116H04B10/0795H04B10/54H04B10/556Y02D30/70
Inventor 蒋卫祥张信歌孙雅伦朱秉诚张在琛崔铁军
Owner SOUTHEAST UNIV