Curved-surface feed source transmitting and receiving integrated double ellipsoid lens antenna

Abstract

The invention discloses a curved-surface feed source transmitting and receiving integrated double ellipsoid lens antenna. The antenna includes a double ellipsoid lens antenna, a lens extension layer, a lens support, a pedestal, receiving feed source antenna arrays and transmitting feed source antenna arrays. The double ellipsoid lens antenna, the lens extension layer and the lens support are all made of medium. The upper surface of the lens extension layer coincides with the lower surface of the lens. The lens support is a hollow cylindroid and the pedestal is a cylindroid. An arc-shaped concave face of the upper surface of the pedestal is provided with the receiving feed source antenna arrays and the transmitting feed source antenna arrays. A one-dimensional scanning or a two-dimensional scanning array is formed according to the distribution way of the receiving feed source antenna arrays and the transmitting feed source antenna arrays. Each of the receiving feed source antenna arrays and the transmitting feed source antenna arrays includes a plurality of waveguide dielectric rod antennas. According to the invention, integration of a transmitting antenna and a receiving antenna is achieved; the design freedom is high; the wave beam consistence is good; the aperture efficiency is high; the side beam is comparatively low; the directionality is good; and the weight is low.

Description

technical field [0001] The invention relates to an antenna, in particular to an arc feed source integrated double ellipsoid 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 millimeter wave...

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Problems solved by technology

[0004] However, 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 existing double ellipsoidal lens antennas have other beam gains that are not at the focus than the beam at the focus The gain is low, resulting 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 ball lens has poor performance in defocused beams, which will cause difficulties in practical applications

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