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Terahertz Luneberg lens multi-beam antenna

A multi-beam antenna, terahertz Lumbert technology, applied in the field of terahertz antennas, can solve problems such as increasing system cost

Pending Publication Date: 2022-01-18
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, large-scale antenna arrays need to use a large number of transceiver components to achieve flexible beam control, and these transceiver components will greatly increase the cost of the system

Method used

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  • Terahertz Luneberg lens multi-beam antenna
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  • Terahertz Luneberg lens multi-beam antenna

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] The Lunberg lens multi-beam antenna for terahertz according to the present invention includes a Lunberg lens based on a non-contour metal column unit and an antenna feed used to excite the lens. The specific structure is as follows figure 1 As shown; in order to realize the continuous dielectric constant change required by the Lunberg lens, the antenna arranges the multi-layer discrete lens units periodically along the circumference, which approximates the dielectric constant distribution of the ideal Lunberg lens. have good equivalence.

[0039] lens unit such as Figure 5 As shown, the upper and lower ends of the unit are metal plate waveguides, and the metal column 1 is located in the center of the structure. In the design, the height H between the metal plate waveguides remains unchanged, and the length and width P of the unit also remain u...

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Abstract

The invention discloses a terahertz Luneberg lens multi-beam antenna, and relates to the field of terahertz antennae. The terahertz Luneberg lens multi-beam antenna comprises a metal branch lens and an antenna feed source, wherein the metal branch lens comprises a plurality of metal columns with different heights and diameters, and different effective dielectric constant distributions can be realized by adjusting the sizes of the metal columns, so that the dielectric constant distribution required by the Luneberg lens is discretely approached, flat plates on the upper and lower sides of the lens expand a certain field angle at the tail end to increase the directivity of the antenna, any active device is not needed, and one-dimensional beam scanning can be realized only by switching the ports. According to the quasi-optical working mode of the antenna, the direction of the antenna wave beam is only related to the position of the feed source, compared with a phased-array antenna, the antenna does not have the problems of gain reduction, sidelobe rise, grating lobe occurrence and the like during wave beam scanning, and the gain of the feed source can be increased in a wide working frequency band.

Description

technical field [0001] The invention relates to the field of terahertz antennas, in particular to a terahertz Lunberg lens multi-beam antenna. Background technique [0002] With the rapid development of wireless communication technology, the high precision and broadband characteristics of terahertz technology make it gradually play a more important role in communication, radar, remote sensing and other fields. In the terahertz frequency band, in order to cope with the high path propagation loss, large-scale and large-aperture antenna arrays are the development trend of terahertz antennas. However, a large-scale antenna array needs to use a large number of transceiver components to achieve flexible beam control, and these transceiver components will greatly increase the cost of the system. [0003] In order to solve this problem, a passive beamforming network is an effective solution. This type of network can generate different phase gradients by exciting different feed port...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/06H01Q15/02H01Q15/08
CPCH01Q19/06H01Q15/02H01Q15/08
Inventor 闫森曹元熙李建星
Owner XI AN JIAOTONG UNIV
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