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A Broadband Selective Wave-Transparent Polarization Control Electromagnetic Structure

An electromagnetic structure and selective technology, applied in the direction of electrical components, antennas, etc., to achieve the effect of low cost, strong operability, and wide polarization conversion frequency band

Active Publication Date: 2019-08-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the polarization control electromagnetic structure provided by the present invention is superior to the existing polarization control electromagnetic structure in terms of polarization control bandwidth, polarization control efficiency, and incident angle.

Method used

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  • A Broadband Selective Wave-Transparent Polarization Control Electromagnetic Structure
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  • A Broadband Selective Wave-Transparent Polarization Control Electromagnetic Structure

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Embodiment 1

[0026] This embodiment provides a broadband selective wave-transparent polarization control electromagnetic structure, the structure includes 5 layers, the surface layer and the bottom layer are metal split resonator rings of the same size, and the opening directions are perpendicular to each other, the middle layer is a metal dipole, There is a dielectric substrate between the metal dipole and the resonant ring; the opening direction of the metal split resonant ring is along the diagonal direction, and the long axis direction of the metal dipole and the opening direction of the resonant ring form an included angle of 45°. This embodiment is realized by coating a periodic metal pattern on the surface of a dielectric substrate at t=2.0mm, and its unit size is: p=7.5mm, a=5.0mm, b=1.4mm, g=1.0mm, l=7.0mm , w=3.0mm; the range of electromagnetic parameters of the dielectric substrate is: the range of the real part of the relative permittivity is 2.0-4.6, and the range of the imagin...

Embodiment 2

[0029] In this embodiment, the electromagnetic structure for broadband selective wave transmission and polarization control is realized by coating a periodic metal pattern on the surface of a dielectric substrate with t=2.5mm, and its unit size is: p=7.5mm, a=5.0mm, b=1.4mm , g=1.0mm, l=7.0mm, w=3.0mm; the range of electromagnetic parameters of the dielectric substrate is: the range of the real part of the relative permittivity is 2.0-4.6, and the range of the imaginary part is 0-0.1.

[0030] For the above polarization-regulated electromagnetic structure, under the vertical incidence of u-polarized electromagnetic waves, the frequency band in which the polarization conversion efficiency is greater than 90% is 9.8GHz to 11.0GHz; under the vertical incidence of v-polarized electromagnetic waves, the frequency band in which the polarization conversion efficiency is greater than 90% The width is 15.7GHz to 20.0GHz; when the incident angle of electromagnetic waves increases to 30°,...

Embodiment 3

[0032] In this embodiment, the broadband selective wave-transparent polarization control electromagnetic structure is realized by coating a periodic metal pattern on the surface of a dielectric substrate with t=2.5mm, and its unit size is: p=8.0mm, a=4.8mm, b=1.6mm , g=1.0mm, l=7.0mm, w=3.0mm; the range of electromagnetic parameters of the dielectric substrate is: the range of the real part of the relative permittivity is 2.0-4.6, and the range of the imaginary part is 0-0.1.

[0033] The above-mentioned polarization-regulated electromagnetic structure, under the vertical incidence of u-polarized electromagnetic waves, the frequency band in which the polarization conversion efficiency is greater than 87% is 9.8GHz to 11.6GHz; under the vertical incidence of v-polarized electromagnetic waves, the frequency band in which the polarization conversion efficiency is greater than 87% The width is 15.8GHz to 20.3GHz; when the incident angle of electromagnetic waves increases to 30°, th...

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Abstract

The invention belongs to the technical field of electronic materials and provides a broadband selective wave-transmissive polarization control electromagnetic structure. The structure contains 5 layers in total. The surface layer and the bottom layer are metal split resonator rings with the same size, and the opening directions are perpendicular to each other. The middle layer is The metal dipole, the dielectric substrate between the metal dipole and the resonant ring; the opening direction of the metal split resonant ring is along the diagonal direction, and the long axis direction of the metal dipole is 45° to the resonant ring opening direction angle. The electromagnetic structure of the present invention has asymmetric transmission characteristics and asymmetric wave-transmitting functions, and the preparation process is simple and mature, with strong operability and low cost; at the same time, the structure can maintain a relatively high temperature within the range of incident angles from 0° to 30°. High polarization conversion rate, wide polarization conversion frequency band and stable selective wave-transmissive working frequency band.

Description

technical field [0001] The invention belongs to the technical field of electronic materials and relates to electromagnetic structure design, in particular to an electromagnetic structure for broadband selective wave-transmissive polarization regulation. Background technique [0002] The polarization state is a very important characteristic of electromagnetic waves. The detection target can be identified, encoded and sampled by using the polarization properties of electromagnetic waves. The polarization regulation of electromagnetic waves has been widely used in high-tech fields such as communication, navigation and radar. Regulating the polarization state of electromagnetic waves has always been an important goal that people want to achieve. In nature, the media that can regulate the polarization state of electromagnetic waves are very limited and inefficient. Therefore, artificially controlling the polarization state of electromagnetic waves has always been a goal that peop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/24
CPCH01Q15/242
Inventor 邓龙江张林博周佩珩陈海燕陆海鹏谢建良
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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