Hemispherical lens feed transceiver integrated double ellipsoidal lens antenna

Abstract

The invention discloses a hemispherical-lens feed source transceiving integrated dual-ellipsoid lens antenna comprising a dual-ellipsoid lens, a lens extension layer, a lens support, a pedestal, a receiving feed source antenna array, and a transmitting feed source antenna array. The dual-ellipsoid lens, the lens extension layer, and the lens support are formed by media. The lens support is a hollow cylindroid body; and the pedestal is also a cylindroid body. The receiving feed source antenna array and the transmitting feed source antenna array are arranged on the upper surface of the pedestal. A one-dimensional or two-dimensional scanning array is formed by a distribution mode of the receiving feed source antenna array and the transmitting feed source antenna array. Each of the receiving feed source antenna array and the transmitting feed source antenna array includes a plurality of hemispherical-lens antennas. According to the invention, the antenna has advantages of capability of transmitting and receiving antenna integration, high design freedom, good beam consistency, high caliber efficiency, low sidelobe, high directivity, light weight, capability of integration with a planar circuit, and small overall longitudinal dimension.

Description

technical field [0001] The invention relates to an antenna, in particular to a hemispherical lens feed source transceiver integrated double ellipsoidal 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 wo...

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Problems solved by technology

[0004] However, the beam width of the azimuth plane and the elevation plane of the ball lens antenna are the same. If the beam width needs to be adjusted, the two will change at the same time, which cannot meet the needs of achieving different coverages in the azimuth plane and the elevation plane.

There is only one focus of the double ellipsoidal lens, and the gain is the highest when the phase center of the feed antenna coincides with the focus of the double ellipsoidal lens, and the gain of other beams not at the focus of the existing double ellipsoidal lens antenna is lower than that of the beam at the focus , resulting in a multi-beam application scenario, the larger the scanning angle, the lower the gain, the higher the sidelobe, and the wider the beam width

This kind of ball lens has poor performance in defocused beams, which will cause difficulties in practical applications

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