Double-frequency-band linearly-circularly polarized converter based on electromagnetic induction transparency effect

An electromagnetic induction transparent, circularly polarized technology, applied in antennas, electrical components and other directions, can solve problems such as large loss and narrow operating frequency band, and achieve the effect of small loss, wide operating frequency band, and low loss.

Inactive Publication Date: 2019-05-10
QIQIHAR UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The present invention proposes a dual-band line-circular polarization converter based on the electromagnetic induction transparency effect in order to solve the problems of large loss and narrow operating frequency band of the existing metamaterial-based linear-circular polarization converter

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  • Double-frequency-band linearly-circularly polarized converter based on electromagnetic induction transparency effect
  • Double-frequency-band linearly-circularly polarized converter based on electromagnetic induction transparency effect
  • Double-frequency-band linearly-circularly polarized converter based on electromagnetic induction transparency effect

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Embodiment

[0033] Embodiment: combine below Figure 1 to Figure 6 This embodiment will be described in detail.

[0034] The dual-band line-circular polarization converter based on the electromagnetic induction transparency effect described in this embodiment includes a plurality of line-circular polarization conversion units, and the plurality of line-circular polarization conversion units form an array in the xy plane;

[0035] The linear-circular polarization conversion unit includes a first dielectric block 1, a second dielectric block 2 and a third dielectric block 3;

[0036] For the x-polarized incident wave, at the first frequency, the first dielectric block 1, the second dielectric block 2 and the third dielectric block 3 respectively constitute a dark state resonant unit, a bright state resonant unit and a bright state resonant unit, the three The destructive interference between them stimulates the electromagnetically induced transparency effect;

[0037] For the x-polarized ...

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Abstract

The invention provides a double-frequency-band linearly-circularly polarized converter based on an electromagnetic induction transparency effect, belongs to the technical field of metamaterial polarization converters, and solves problems of great loss and narrow operating frequency band of the conventional linearly-circularly polarized converters based on metamaterials. The double-frequency-band linearly-circularly polarized converter comprises a plurality of linearly-circularly conversion units forming an array in xy planes, and each linearly-circularly conversion unit comprises a first dielectric block, a second dielectric block and a third dielectric block. For x-polarized incident waves, three dielectric blocks can generate an electromagnetic induction transparency effect at a first frequency and a second frequency; for y-polarized incident waves, the three dielectric blocks can excite the electromagnetic induction transparency effect at a third frequency and a fourth frequency; and under common excitation of the x-polarized incident waves and the y-polarized incident waves, the linearly-circularly polarized converter can realize linearly-circularly polarized conversion at a first central frequency and a second central frequency.

Description

technical field [0001] The invention relates to a linear-circular polarization converter and belongs to the technical field of metamaterial polarization converters. Background technique [0002] The polarization control of electromagnetic waves, especially the conversion of linearly polarized waves into circularly polarized waves, is of great significance in the fields of communication, navigation, and electronic countermeasures. In recent years, metamaterials have been increasingly used to control the polarization characteristics of electromagnetic waves due to their polarization control ability several orders of magnitude greater than natural materials and ultra-thin thickness. However, existing linear-circular polarization converters based on metamaterials are usually made of metallic materials. Due to the dissipative loss characteristics of metal materials, when the operating frequency increases, the loss of this type of linear-circular polarization converter based on m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/24
Inventor 朱磊李奇楠董亮赵昕李泰成
Owner QIQIHAR UNIVERSITY
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