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Metamaterial, and method and apparatus for adjusting frequency of metamaterial

  • US 10,566,960 B2
  • Filed: 11/08/2018
  • Issued: 02/18/2020
  • Est. Priority Date: 05/19/2016
  • Status: Active Grant
First Claim
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1. A metamaterial, comprising:

  • a substrate material; and

    an electrically controllable microstructure unit array attached on the substrate material and comprising a plurality of electrically controllable microstructure units;

    wherein each electrically controllable microstructure unit comprises;

    an external metal structure;

    an internal metal structure;

    wherein the internal metal structure and the external metal structure define a ring-shaped channel; and

    a varactor diode disposed in the ring-shaped channel of each electrically controllable microstructure unit;

    wherein the varactor diode is configured for adjusting an operating frequency of each electrically controllable microstructure unit according to a voltage applied across the varactor diode;

    wherein the voltage applied across the varactor diode is a variable reverse bias direct current voltage.

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