Millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens antenna

A lens antenna and dielectric column technology, which is applied to antennas, antenna arrays, electrical components, etc., to achieve the effects of low processing accuracy, simple structure, and high aperture efficiency

Inactive Publication Date: 2013-08-07
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

[0009] However, domestic and international research on millimeter-wave multi-beam antennas is still limited to the realization of large-angle scanning, so for the realization of 360 0 There are fewer solutions for omnidirectional scanning, and 360 0 Omnidirectional scanning is of great significance to aerospace, satellite communication and military fields

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  • Millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens antenna
  • Millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens antenna
  • Millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens 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] In the case of horizontal polarization, in order to ensure that the parallel plate waveguide composed of two adjacent metal discs excites TE 10 mode, the height of the parallel-plate waveguide must be greater than half a wavelength and less than one wavelength at the same time. The propagation constant k of this mode is related to the height of the parallel plate waveguide, that is, the height of the dielectric cylindrical lens, and the efficiency of the cylindrical lens antenna also depends on this height. Therefore, the height of the parallel plate waveguide is chosen as , which can not only ensure the highest efficiency of the cylindrical lens antenna, but also make the focal length of the cylindrical lens smaller, reduce the scattering of electromagnetic waves between the metal discs, and reduce the level of side lobes and back lobes. The ...

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Abstract

The invention discloses a millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens antenna comprising three dielectric cylinder lenses, three feed source antenna arrays with scan ranges of 120 DEG and four round metal discs. One of the three dielectric cylinder lenses is respectively coaxially arranged among the four round metal discs, one of the three feed source antenna arrays is respectively arranged between the edges of two adjacent round metal discs, the difference between two of the three feed source antenna arrays on a horizontal projection surface is 120 DEG, and a phase central plane of each feed source antenna array is superposed with a focal plane of each dielectric cylinder lens. The invention realizes 360-DEG omnidirectional scan in the horizontal direction; the three dielectric cylinder lens antennas are partitioned by parallel round metal disc-shaped plates, and the scan of each homogeneous dielectric cylinder lens is not interfered by the other two lenses,thus the scanning beam of each layer of cylinder lens antenna is totally consistent; and the millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens antenna can be conveniently connected with a printed integrated circuit. The millimeter-wave 360-DEG omnidirectional-scan dielectric cylinder lens antenna is applied to the fields of space flight communication, satellite communication, electronic countermeasure and the like.

Description

technical field [0001] The present invention relates to antennas, in particular to a millimeter wave 360 o Omni-directional scanning dielectric rod lens antenna. Background technique [0002] A series of researches on millimeter-wave multi-beam antenna systems have been carried out internationally. Traditional methods include the use of parabolic reflector antennas and Rotman lenses. However, these methods either have complex structures, limited scanning range, or large losses and narrow operating frequency bands. , so they cannot meet the requirements of modern millimeter wave system applications. What can best reflect the current research level of millimeter-wave multi-beam antennas is the application of the concept of lens technology in the optical field to the millimeter-wave band, which includes dielectric lenses, ball lenses, and cylindrical lens antennas. The biggest feature of these lens antennas is their simple structure, scanning Wide range enables low loss broad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00H01Q19/06
Inventor 吴锡东朱道虹
Owner ZHEJIANG UNIV
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