All-metal multi-beam lens phased array antenna

Abstract

The invention relates to an all-metal multi-beam lens phased array antenna, which belongs to the technical field of phased arrays. The all-metal multi-beam lens phased-array antenna comprises a lens array and a feed network. The lens array comprises first, second, third and fourth all-metal fisheye lens units; the feed network includes first, second, third, and fourth rectangular waveguides; the four all-metal fisheye lens units support the three layers of metal substrates at the two ends of the lens array by using metal walls; the lens array and the feed network are connected and fixed, and it is guaranteed that the first rectangular waveguide, the second rectangular waveguide, the third rectangular waveguide and the fourth rectangular waveguide feed the first all-metal fisheye lens unit, the second all-metal fisheye lens unit and the fourth all-metal fisheye lens unit well; a simpler and low-cost phased array antenna is realized in the same space; the directional diagram characteristics of low grating lobe and low side lobe of the lens phased-array antenna and a larger scanning angle are realized; and the phased-array antenna is good in return loss, isolation and radiation efficiency.

Description

technical field [0001] The invention relates to an all-metal multi-beam lens phased array antenna, belonging to the technical field of phased array antennas. Background technique [0002] In order to meet the development needs of 5G millimeter wave frequency band communication, multi-beam antenna technology has received more and more attention. In wireless systems, in order to meet better communication quality and coverage, the antenna is usually required to achieve a large beam scanning angle within a limited space size, and to maintain a stable high-gain performance of the main beam during the scanning process. The classic solution is a phased array antenna. However, in order to obtain better radiation performance, phased array antennas often require a large number of analog or digital T / R components, and the distance between elements in the array is relatively small. For millimeter wave systems, this undoubtedly increases design complexity and production costs, and is n...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the defects of complex feeding network and high cost when the existing phased array antenna realizes high gain and large angle scanning, and adopts an all-metal fisheye lens antenna with multi-beam scanning characteristics as a unit antenna, and proposes An all-metal multi-beam lens phased array antenna is proposed, which realizes low grating lobe and large-angle beam scanning while reducing the number of phased array elements

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