Hemispherical Lens Feed Transceiver Integrated Crescent Lens Antenna

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...

AI Technical Summary

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

Images