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Horn antenna device

A technology of horn antenna and horn, which is applied in the direction of antenna, waveguide horn, electrical components, etc., can solve the problems of uneven phase and large size at the horn antenna port, achieve uniform phase distribution, reduce reflection, and achieve the effect of impedance matching

Inactive Publication Date: 2012-10-24
KUANG CHI INST OF ADVANCED TECH +1
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Problems solved by technology

[0010] The present invention provides a horn antenna device, which solves the problem that the size of the existing horn antenna device is too large and the phase at the mouth of the horn antenna is uneven

Method used

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[0033] The first embodiment of a horn antenna device in the embodiment of the present invention includes:

[0034] The horn antenna device of this embodiment includes an electromagnetic waveguide and a horn, and the horn is filled with a non-uniform metamaterial, so that the impedance value of the non-uniform meta-material gradually increases, so that the electromagnetic wave changes from low impedance to high impedance, or from high impedance to high impedance. For low-impedance propagation, impedance matching is achieved through non-uniform metamaterials.

[0035] Since the difference between the impedance of the electromagnetic waveguide of the horn antenna device and the air impedance is large, the horn is filled with a thinner non-uniform metamaterial, so that the electromagnetic wave passes through the non-uniform metamaterial with continuously changing impedance during the process of conducting the electromagnetic wave from the electromagnetic waveguide to the air. , to...

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Abstract

The invention provides a horn antenna device which comprises an electromagnetic wave waveguide and a horn and further comprises an uneven metamaterial filled in a horn. The uneven metamaterial is formed by laminating a plurality of sheets of even metamaterial sheet layers, and each sheet layer comprises a sheet-shaped substrate and a plurality of porous microstructures arranged on the substrate. The porous microstructures on each substrate are arranged to be different to enable the impedance values of the uneven metamaterial to be gradually increased from the electromagnetic wave waveguide position to a horn mouth, accordingly the impedance of the waveguide is changed, the gradual increasing or gradual descending of waveguide impedance is achieved, further impedance matching is achieved, reflection is reduced, and the aim of minimizing the horn antenna is achieved. Moreover, compared with extremely long small field angle horn antennas in the prior art, the horn antenna device has the advantage that phase distribution of horn diameter of the minimized horn antenna is more even.

Description

【Technical field】 [0001] The invention relates to the field of antennas, in particular to a horn antenna device filled with non-uniform metamaterials. 【Background technique】 [0002] Metamaterials refer to some artificial composite structures or composite materials with extraordinary physical properties that natural materials do not have; through the orderly design of the structure on the key physical scale of the material, it is possible to break through the limitations of some apparent natural laws and obtain Metamaterial functions beyond the ordinary properties inherent in nature; metamaterials can respond to electric or magnetic fields, or both. The response to an electric field depends on the permittivity of the metamaterial, while the response to a magnetic field depends on the permeability of the metamaterial. [0003] Metamaterials have three important characteristics: [0004] First, metamaterials are usually composite materials with novel artificial structures; ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02H01Q15/00
Inventor 刘若鹏张洋洋徐冠雄赵治亚
Owner KUANG CHI INST OF ADVANCED TECH
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