Feedback microwave antenna

A microwave antenna and feed-type technology, applied in antennas, electrical components, etc., can solve the problems of electromagnetic energy reduction, large spherical lens 1000, electromagnetic wave reflection interference, etc., to avoid the reduction of electromagnetic energy, improve the range of short-distance radiation, The effect of improving antenna performance

Active Publication Date: 2012-06-06
KUANG CHI INST OF ADVANCED TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

In the process of implementing the present invention, the inventor found that the lens antenna has at least the following technical problems: the spherical lens 1000 is bulky and heavy, which is not conducive to the use of miniaturization; the spherical lens 1000 has a great dependence on the shape and needs to be more precise Realize the directional propagation of the antenna; the electromagnetic wave reflection interference and loss are relatively serious, and the electromagnetic energy is reduced
Due to the reflection of part of the electromagnetic wave, the electromagnetic energy along the propagation direction will be correspondingly lost, which seriously affects the distance of electromagnetic signal propagation and the quality of the transmitted signal.

Method used

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Embodiment Construction

[0031] Light, as a kind of electromagnetic wave, when passing through glass, because the wavelength of the light is much larger than the size of the atom, we can use the overall parameters of the glass, such as the refractive index, instead of the detailed parameters of the atoms that make up the glass. The response of glass to light. Correspondingly, when studying the response of a material to other electromagnetic waves, the response of any structure in the material that is much smaller than the wavelength of the electromagnetic wave to electromagnetic waves can also be described by the overall parameters of the material, such as the dielectric constant ε and the permeability μ. By designing the structure of each point of the material, the dielectric constant and permeability of each point of the material are the same or different, so that the overall dielectric constant and permeability of the material are arranged regularly, and the magnetic permeability and permeability of ...

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Abstract

The invention discloses a feedback microwave antenna, which comprises a radiation source, a first metamaterial panel and a second metamaterial panel, wherein the first metamaterial panel is used for diverging electromagnetic waves emitted by the radiation source; and the second metamaterial panel has an electromagnetic wave aggregation function and is used for converting the electromagnetic wavesemitted from the first metamaterial panel into plane waves. In the feedback microwave antenna, the antenna is manufactured with a metamaterial principle, and therefore the antenna is free from the limitation of a common convex lens shape, a concave lens shape and a paraboloid shape. According to the antenna of the feedback microwave antenna, the antenna can be in a surface plate shape or any shape, and the antenna has the beneficial effects of thinner thickness, smaller volume, low cost and good gain effect and is convenient to process and manufacture.

Description

Technical field [0001] The present invention relates to the field of antennas, and more specifically, to a rear-fed microwave antenna. Background technique [0002] In conventional optical devices, a lens can be used to make the spherical wave radiated from a point light source located at the focal point of the lens become a plane wave after being refracted by the lens. The lens antenna is composed of a lens and a radiator placed on the focal point of the lens. The lens converges the electromagnetic waves radiated by the radiator through the lens and then emits the antenna. This antenna has strong directivity. [0003] At present, the convergence of the lens is realized by the refraction of the spherical shape of the lens, such as figure 1 As shown, the spherical wave emitted by the radiator 1000 is converged by the spherical lens 2000 and then emitted as a plane wave. In the process of implementing the present invention, the inventor found that the lens antenna has at least the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/02H01Q19/06
Inventor 刘若鹏季春霖岳玉涛
Owner KUANG CHI INST OF ADVANCED TECH
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