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Terahertz electronically controlled resonant switching metasurface phase shifting device

A terahertz, switching technology, applied in electrical components, antennas, etc., can solve the problems of large switching loss of semiconductors, bulky ferrite materials, hindering the application of phase shifters, etc. characteristics, the effect of increasing the equivalent resonance length

Active Publication Date: 2021-03-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ferrite materials are bulky, costly and not easy to integrate, while problems such as high loss and poor linearity of semiconductor switches hinder the application of phase shifters in the terahertz band

Method used

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  • Terahertz electronically controlled resonant switching metasurface phase shifting device
  • Terahertz electronically controlled resonant switching metasurface phase shifting device
  • Terahertz electronically controlled resonant switching metasurface phase shifting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] This example includes:

[0037] The metal bottom plate is made of metal aluminum, silver, gold and other good conductors.

[0038] Semiconductor substrate, the material is sapphire, high resistance silicon, silicon carbide, etc.

[0039] Phase shift units arranged in M×N orthogonal arrays arranged on the semiconductor substrate.

[0040] see figure 2 , the phase shifting unit includes a resonant ring 3 with an opening and a dipole oscillating structure 4, the dipole oscillating structure 4 is arranged at the opening of the resonant ring, and the two end points of the resonant ring are respectively connected to a rectangular metal strip, connected The point is located at the center of the long side of the rectangular metal strip, and the long side of the rectangular metal strip is perpendicular to the edge of the resonant ring where the opening is located; between the two rectangular metal strips at the opening, an ohmic patch is arranged on the upper surface of the d...

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PUM

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Abstract

A terahertz electronically controlled resonant switching metasurface phase shifting device relates to the field of metamaterials and electromagnetic functional devices. The present invention includes a metal bottom plate, a dielectric substrate and a phase shift structure layer arranged layer by layer from bottom to top, and the phase shift structure layer includes phase shift units arranged in an M×N orthogonal array, and each phase shift unit includes a Rectangular open resonant ring, the opening of the resonant ring is located at the midpoint of its side, at the opening of the resonant ring, the two ends of the resonant ring are respectively connected to a rectangular metal strip, and the connection point is located on the long side of the rectangular metal strip In the center, the long side of the rectangular metal strip is perpendicular to the side of the resonant ring where the opening is located; between the two rectangular metal strips at the opening, an ohmic patch is arranged on the upper surface of the dielectric substrate. The phase shift range of the invention is extended to 330 degrees, and the integration degree of the device and the control precision of the array are further improved.

Description

technical field [0001] The invention relates to the field of metamaterials and electromagnetic functional devices. [0002] technical background [0003] Terahertz (THz) wave is a new type of electromagnetic spectrum that needs to be developed urgently. It usually refers to electromagnetic waves with frequencies ranging from 0.1 THz to 10 THz. This frequency range lies between millimeter waves, infrared, and light, and has many unique electromagnetic properties. Therefore, it has extremely important potential application value in the fields of physics, chemistry, electronic information, imaging, life science, material science, astronomy, atmospheric and environmental monitoring, national security and anti-terrorism, communication and radar. [0004] The phased antenna array has the advantages of more flexible wave scanning and stronger anti-interference performance. As a key component of the phased antenna array, the phase shifter's performance directly determines the perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q3/36H01Q15/00
CPCH01Q3/36H01Q15/0086
Inventor 兰峰尹婧王禄炀曾泓鑫罗峰杨梓强史宗君
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA