A control method applied to intelligent metasurface and controller of intelligent metasurface

A control method and metasurface technology, applied in the direction of reducing energy consumption, advanced technology, antennas, etc., can solve a large number of problems, achieve the effects of reducing frequency, improving stability, and saving costs

Active Publication Date: 2022-07-12
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides an intelligent metasurface and its control method, thereby solving the technical problem of requiring a large number of controller IO ports to control the super-energy super-reverse RIS unit

Method used

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  • A control method applied to intelligent metasurface and controller of intelligent metasurface
  • A control method applied to intelligent metasurface and controller of intelligent metasurface
  • A control method applied to intelligent metasurface and controller of intelligent metasurface

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Embodiment 1

[0096] like Figure 4 As shown, this embodiment uses a row scanning method, and each RIS unit uses a transistor T1 to control the on-off of the RIS. The basic structure of a RIS unit and its analog on-off circuit is as follows Figure 5 No.

[0097] In this embodiment, the intelligent metasurface has a total of n rows and m columns of RIS units. The controller sends a scan signal to the scan line driver circuit, and the scan line driver circuit selects the G1, G2, G3, . . . , Gn-1, Gn A certain row of RIS units, then, the controller sends the control signal of this row of RIS to the signal line driver circuit, and the signal line driver circuit simultaneously loads the control voltage on the first S1, S2, S3, S4,..., Sm-1, Sm On each RIS unit, the voltage changes and the amplitude and phase change. The transistors of the RIS cells of the non-gated row are turned off, and the control voltage is held by the holding capacitor C1.

[0098] The whole system works as follows:

...

Embodiment 2

[0103] like Figure 7 As shown, this embodiment uses a column scan method. At this time, each row is connected to the signal line driver circuit, and each column is connected to the scan line driver circuit. The smart metasurface shown is still n rows and m columns, and the connection method between the on-off circuit, the scan line and the signal line driver circuit is simulated. There is no change, that is: the gate of the transistor is connected to the scan line driver circuit, the source is connected to the signal line driver circuit, the drain is connected to one end of the RIS unit and one end of the capacitor, and the other end of the RIS unit and the other end of the capacitor ground.

[0104] Embodiments of the present invention provide a controller for an intelligent metasurface, including: a computer-readable storage medium and a processor;

[0105] the computer-readable storage medium for storing executable instructions;

[0106] The processor is configured to r...

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Abstract

The invention discloses an intelligent metasurface and a control method thereof. The working state of an intelligent metasurface RIS unit is controlled by the mutual cooperation of a scanning line driving circuit and a signal line driving circuit, so as to realize the control of a large-scale reflection array by using a few controller pins. Therefore, the cost of the intelligent metasurface system can be saved, and the utilization efficiency of the controller can be improved; in addition, the present invention can realize the analog control of the RIS unit through the analog on-off circuit, and compared with the prior art, 1-bit or 2-bit quantization can be used. The digital control method of processing can adopt higher-resolution analog control, thereby reducing quantization loss and improving control accuracy.

Description

technical field [0001] The invention belongs to the field of wireless communication, and more particularly, to an intelligent metasurface and a control method thereof. Background technique [0002] In the field of 5G wireless communication and even the field of 6G wireless communication in the future, millimeter wave technology plays an extremely important role as a key technology, but millimeter wave has a very fatal defect. When encountering obstacles, the loss is serious, resulting in poor communication effect. ideal. In order to solve this problem, an idea is to add a specially manufactured, low-cost, programmable intelligent metasurface (RIS / Large Intelligent Surface / ReconfigurableIntelligent Surface / Software Defined Surface / Metasurface / IRS / IntelligentReflecting Surface / Reconfigurable Meta-Surfaces / Holographic MIMO, etc., which are all expressed by RIS below) to assist communication. The main component of smart metasurfaces (also known as smart reflective surfaces) a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/14
CPCH01Q15/14Y02D30/70
Inventor 裴熙隆尹海帆谭力张昆王锴陆骋
Owner HUAZHONG UNIV OF SCI & TECH
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