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All-metal part Maxwell fisheye lens wide-angle coverage multi-beam antenna

A multi-beam antenna and fisheye lens technology is applied in the direction of antenna, antenna grounding switch structure connection, radiation unit cover, etc., which can solve the problems of difficult integration, unstable gain, complex phased array antenna feeding network, etc. The effect of coverage, large scanning angle and high radiation efficiency

Active Publication Date: 2021-05-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a kind of all-metal partial Maxwell fisheye lens multi-beam antenna for the gain unstable and not easy to integrate when the existing lens antenna scans at a large angle and the complex technical defect of the phased array antenna feeding network. On the basis of the traditional Maxwell fisheye lens antenna, the lens antenna cuts off a part to realize the convergence of spherical waves to plane waves, and at the same time realizes the linear arrangement of the feed array for easy integration; the lens antenna is in a limited space, by changing The feeding position of the feed source realizes the large-angle scanning of the main beam, which ensures the relative stability of the gain; it also uses the beam frequency scanning brought about by the dispersion characteristics of the fisheye lens itself to improve the coverage of the beam

Method used

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  • All-metal part Maxwell fisheye lens wide-angle coverage multi-beam antenna
  • All-metal part Maxwell fisheye lens wide-angle coverage multi-beam antenna
  • All-metal part Maxwell fisheye lens wide-angle coverage multi-beam antenna

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Embodiment 1

[0064] The structure of this embodiment is as figure 1 shown. This embodiment consists of an upper metal cover plate A, a lower metal cover plate B, an upper part C1 of a six-port network, a lower part D of a six-port network, and a metal ring E1.

[0065] The upper metal cover plate of this embodiment is as image 3 As shown, it includes 3 threaded holes to connect with the six-port upper part C1. The edge of the metal cover is upturned, which is symmetrical with the metal ring E1.

[0066] The lower metal cover plate of this embodiment is as Figure 4 As shown, 1 is a number of metal posts of different heights, which are integrated with the bottom plate, including 6 threaded holes, of which 3 threaded holes arranged in parallel are connected with the lower part of the six ports, and 3 threads are distributed on the edge of the lens The hole is connected with the metal ring E1.

[0067] It can be seen from the figure that compared with the traditional Maxwell fisheye len...

Embodiment 2

[0077] The structure of this embodiment is as figure 2 shown. This embodiment consists of the lower metal cover plate B, the upper part C2 of the six-port network, the lower part D of the six-port network and the metal ring E2.

[0078] The upper part C2 of the six-port network of this embodiment is as Figure 6 shown. Includes 7 threaded holes for connection to the lower half D of the six-port network.

[0079] Metal ring E2 of the present embodiment is as Figure 9 shown. Grinding the edges makes it perform better. It includes 3 threaded holes to connect with the lower metal cover plate B.

[0080] Figure 17 For the simulation and test results of the return loss of this embodiment, in the 33GHz to 36GHz frequency range, the return loss simulation results of the six ports are all less than -15dB, and the test results of the three ports are in good agreement with the simulation results, less than -15dB. 15dB.

[0081] Figure 18 For the simulation and test results ...

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Abstract

The invention relates to an all-metal part Maxwell fisheye lens wide-angle coverage multi-beam antenna, and belongs to the technical field of lens antennas. According to the multi-beam lens antenna, a complete two-dimensional Maxwell fisheye lens is cut along a straight line, and a feed source array arranged along a straight line is adopted; port switching and frequency scanning are combined, and the antenna comprises an upper layer metal cover plate A, a lower layer metal cover plate B, a six-port network upper half part C1, a six-port network upper half part C2, a six-port network lower half part D, a metal ring E1 and a metal ring E2. The beam pointing directions of the pitching surface are respectively 20 degrees and 0 degree, and the working frequency range is 33 to 36 GHz. The beam coverage rate is improved in a limited space; meanwhile, feed sources are arranged along a straight line and are easily integrated in the system; cutting is carried out, so that the size of the lens is reduced; by utilizing the characteristics of the cut Maxwell fisheye lens, azimuth angle scanning exceeding + / -90 degrees is realized; return loss and isolation are good, and radiation efficiency is high.

Description

technical field [0001] The invention relates to an all-metal partial Maxwell fisheye lens wide-angle coverage multi-beam antenna, which belongs to the technical field of lens antennas. Background technique [0002] With the development of 5G technology and the needs of various communication systems, multi-beam antennas have attracted more and more attention. An antenna with good performance requires that it can achieve full space coverage in a limited space as much as possible, while maintaining the stability of the gain as much as possible. Phased array is a typical multi-beam solution, but it often requires a complex feed network, a large number of T / R components, high cost, inconvenient maintenance, and low cost performance. [0003] Therefore, the lens antenna has the advantages of low cost, wide frequency band, multi-beam scanning and simple feeding network, and is favored by more and more people. Gradient index lenses have been widely used in multi-beam antennas, and...

Claims

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Application Information

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IPC IPC(8): H01Q15/02H01Q1/42H01Q1/50
CPCH01Q15/02H01Q1/50H01Q1/42
Inventor 卢宏达刘埇张彦博刘植鹏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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