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Hemispherical Lens Feed Transceiver Integrated Crescent Lens Antenna

A hemispherical lens, lens antenna technology, applied in antennas, slot antennas, circuits, etc., can solve the problems of low beam gain, difficulty, poor performance, etc., achieve low side lobes, reduce performance, improve stability and shock resistance. Effect

Active Publication Date: 2019-08-30
吴锡东
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is only one focus of the crescent lens, and the gain is the highest when the phase center of the feed antenna coincides with the focus of the crescent lens, and the gain of other beams that are not at the focus of the existing crescent lens antenna is lower than that of the beam at the focus, As a result, in multi-beam application scenarios, the larger the scanning angle, the lower the gain, the higher the sidelobe, and the wider the beam width
This kind of crescent lens has poor performance in defocused beams, which will cause difficulties in practical applications

Method used

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  • Hemispherical Lens Feed Transceiver Integrated Crescent Lens Antenna
  • Hemispherical Lens Feed Transceiver Integrated Crescent Lens Antenna
  • Hemispherical Lens Feed Transceiver Integrated Crescent Lens Antenna

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Embodiment Construction

[0028]When the feed is placed on the focus of the crescent lens, the phase center of the feed coincides with the focus of the crescent lens, and the electromagnetic waves radiated by the feed antenna become parallel beams and radiate out through the crescent lens, thus realizing the antenna maximum gain. The hemispherical lens antenna is used as the feed source so that the gain of the off-focus beam is consistent with that of the central beam while maintaining a high gain. The pattern of this crescent lens antenna is similar to that of a traditional ball lens antenna, and narrow beams can be achieved in the E-plane and H-plane. In addition, the longitudinal dimension of the lens antenna can be adjusted by changing the ratio of the focal length to the lens diameter. By changing the off-axis amount of the hemispherical lens antenna, the radiation performance of the lens antenna can be optimized. Similar to the traditional lens antenna, a simple ray tracing method can be used t...

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Abstract

The invention discloses a hemispherical lens feed source transmitting-receiving integrated crescent lens antenna, which comprises a crescent lens, a lens extension layer, a lens support, a base, a receiving feed source antenna array and a transmitting feed source antenna array, and is characterized in that the crescent lens, the lens extension layer and the lens support are formed by a medium, the lens support is a hollow cylinder, and the base is a cylinder; the upper surface of the base is provided with the receiving feed source antenna array and the transmitting feed source antenna array, a one-dimensional scanning array or a two-dimensional scanning array is formed according to an arrangement mode of the receiving feed source antenna array and the transmitting feed source antenna array, and both the receiving feed source antenna array and the transmitting feed source antenna array comprise a plurality of hemispherical lens antennas. The hemispherical lens feed source transmitting-receiving integrated crescent lens antenna integrates a transmitting antenna and a receiving antenna, and is good in beam consistency, high in aperture efficiency, low in sidelobe, good in directivity, light in weight, easy to be integrated with a planar circuit and small in overall longitudinal dimension.

Description

technical field [0001] The invention relates to an antenna, in particular to a hemispherical lens feed source integrated crescent lens antenna. Background technique [0002] A series of researches on lens antenna systems have been carried out in the world very early. Traditional lens antennas generally adopt geometric shapes such as planes, spheres, hyperboloids, and parabolas. However, these methods have limited scanning range, large losses, and narrow operating frequency bands, which cannot satisfy requirements of modern mmWave system applications. The research group led by Prof.G.M.Rebeiz of the University of Michigan pioneered the research field of dielectric lenses (D.F.Filipovic, S.S.Gearhart and G.M.Rebeiz, "Double-slot antennas on extended hemispherical and elliptical silicon dielectric lenses," IEEE Trans Microwave Theory Tech. , MTT-41, pp.1738-1749, Oct.1993). In 1994, he proposed a dielectric lens antenna that is especially suitable for working in the millimete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/10H01Q15/02H01Q19/06
Inventor 吴锡东杨帆严海隆
Owner 吴锡东
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