Meander-line circular polarization grid of any incidence angle

A technology of incident angle and meandering line, applied in electrical components, circuits, waveguide devices, etc., can solve the problem of inability to apply scanning antennas, and achieve the effects of small thickness, improved circular polarization bandwidth, and low polarization loss.

Inactive Publication Date: 2017-07-07
10TH RES INST OF CETC
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a simple structure, high polarization purity, small polarization loss and suitable for Meandering Line Circular Polarization Gratings at Arbitrary Incidence Angles

Method used

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  • Meander-line circular polarization grid of any incidence angle
  • Meander-line circular polarization grid of any incidence angle
  • Meander-line circular polarization grid of any incidence angle

Examples

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Embodiment Construction

[0017] refer to Figure 1-Figure 4. In the example described below, a meandering line circular polarization grid with any incident angle includes an upper metal grid layer 1, an upper foam medium layer 2, an inner metal grid layer 3, a lower foam medium layer 4 and a lower metal grid Layer 5, and the three metal grid layers are arranged alternately from top to bottom. Three layers of metal grid layers and two layers of foam medium layers, a total of 5 layers of structure. The upper foam medium layer 2 and the lower foam medium layer 4 support the upper foam medium layer 2, the inner metal grid layer 3 and the lower metal grid layer, and have the same thickness. The metal grid layer 1 is formed with periodically arranged meander metal grids 11 , and adjacent metal grids 11 are separated by air grooves 12 of equal width. The upper foam medium layer 2 is adhered to the upper metal grid layer 1, and the material is foam 21 with a dielectric constant of 1.1. The inner metal gri...

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Abstract

The invention provides a meander-line circular polarization grid of any incidence angle, and aims at providing the circular polarization grid of low loss, high circular polarization purity and capable of satisfying any incidence angle. Meander-line metal grids arranged according to periods are prepared on upper, inner and lower metal grid layers respectively, adjacent metal grids are separated via air slots whose width is the same with that of the metal grids respectively, the inner metal grid layer is prepared between upper and lower foam medium layers; the upper foam medium layer is adhered to the upper metal grid layer, the lower upper foam medium layer is adhered to the inner metal grid layer, and the lower metal grid layer is adhered to the lower foam medium layer; and an electric field is polarized horizontally, the included angle between a vector direction of the electric field and a meander metal grid is 45 degree, and after polarization change by the meander-line metal grids of the upper, inner and lower metal grid layers, and linearly polarized waves can be converted to left-hand and right-hand circular polarization waves.

Description

technical field [0001] The invention relates to a meander line circular polarization grid, in particular suitable for a circular polarization grid with low loss, high circular polarization purity, which can satisfy any incident angle and generate any circular polarization handed wave. Background technique [0002] With the continuous development of communication systems, the requirements for antenna polarization diversity are getting higher and higher, and the application range of technologies such as circular polarization and dual polarization is becoming wider and wider. For example, in Ka-band satellite communication systems, It is required that the transmitting antenna is a left-handed circularly polarized antenna, and the receiving antenna (K frequency band) is a right-handed circularly polarized antenna. Linear polarization is divided into vertical polarization and horizontal polarization. Circular polarization is further divided into left-handed polarization and righ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/17
CPCH01P1/17H01P1/172H01P1/173
Inventor 刘熠志刘小亮
Owner 10TH RES INST OF CETC
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