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Antenna

An antenna and impedance matching technology, applied in the electromagnetic field, can solve the problems of poor performance, reflection interference and large loss

Active Publication Date: 2013-01-30
KUANG CHI INST OF ADVANCED TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high-performance antenna for the above-mentioned defects of the prior art, such as the above-mentioned reflection interference, large loss, and poor performance.

Method used

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Embodiment Construction

[0036] Figure 9 It is a schematic diagram of an antenna concentrating electromagnetic waves according to an embodiment of the present invention. The antenna includes a radiation source 20 and a converging element 10 with an electromagnetic wave converging function. The converging element 10 is used to convert electromagnetic waves emitted by the radiation source 20 into plane waves.

[0037] As common knowledge, we know that the refractive index of electromagnetic waves is related to In direct proportion, when a beam of electromagnetic wave propagates from one medium to another medium, the electromagnetic wave will be refracted. When the refractive index distribution inside the material is non-uniform, the electromagnetic wave will be deflected to a position with a relatively large refractive index. Through By designing the electromagnetic parameters of each point in the metamaterial, the refractive index distribution of the metamaterial can be adjusted, thereby achieving th...

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Abstract

The invention relates to an antenna. The antenna comprises a radiation source and a collecting unit. The collecting unit has the function of collecting electromagnetic wave and is used for converting electromagnetic wave emitted by the radiation source into plane wave. The collecting unit comprises a functional dielectric plate and an impedance matching element. The impedance matching element is disposed on a first lateral surface of the functional dielectric plate and is tightly attached to the first lateral surface of the functional dielectric plate. The impedance matching element comprises a plurality of first impedance matching layers. Refractive index distribution for each impedance matching layer is indicated in such way that the functional dielectric plate includes a plurality of concentric rings which have lateral curved surfaces and attach with one another. The bottom radius of each ring is smaller than the top radius. The refractive index distribution of the impedance matching layers is designed, so that reflection interference and loss are decreased. Jumps of the refractive index of the functional dielectric layer are curved, so that refraction, diffraction and reflection effects of the jumps are reduced greatly. The problems caused by mutual interference are relieved, and the antenna has better properties.

Description

technical field [0001] The present invention relates to the field of electromagnetism, and more specifically, relates to an antenna. Background technique [0002] With the continuous development of science and technology, electromagnetic wave technology has gradually penetrated into all aspects of our lives. An important characteristic of electromagnetic waves is that they can propagate in any medium or vacuum. During the propagation of electromagnetic waves from the transmitting end to the receiving end, the loss of energy directly affects the distance traveled by the electromagnetic signal and the quality of the transmitted signal. [0003] When the electromagnetic wave passes through the same medium, there is basically no energy loss; and when the electromagnetic wave passes through the interface of different media, partial reflection will occur. Usually, the greater the difference between the electromagnetic parameters (dielectric constant or magnetic permeability) of ...

Claims

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Application Information

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