Broad-angle scanning phased-array antenna adopting special directional diagram array element, and design method

A phased array antenna, wide-angle scanning technology, applied in the direction of antenna combination with different interactions, resonant antenna, antenna grounding switch structure connection, etc. Smooth Gain, Lightweight Effects

Active Publication Date: 2018-01-05
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the current wide-angle scanning phased array antenna generally has problems such as gain drop when scanning at a large angle, or the design of the array element is too complicated.

Method used

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  • Broad-angle scanning phased-array antenna adopting special directional diagram array element, and design method
  • Broad-angle scanning phased-array antenna adopting special directional diagram array element, and design method
  • Broad-angle scanning phased-array antenna adopting special directional diagram array element, and design method

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] The application principle of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the wide-angle scanning phased array antenna structure using special pattern elements provided by the embodiment of the present invention includes: several sub-arrays and a beam control system 1 .

[0023] The wide-angle scanning phased array antenna provided by the embodiment of the present invention using a special pattern array element is composed of a two-stage array, the first stage is a sub-array composed of several tiny units and a feed structure...

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PUM

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Abstract

The invention belongs to the technical field of a broad-angle scanning phased-array antenna, and discloses a broad-angle scanning phased-array antenna adopting a special directional diagram array element, and a design method. A low-profile phased array adopts sub arrays with special directional diagrams as the array element to enable a low-profile phased-array antenna to realize stable gain withina broad scanning angle range or to satisfy the requirement of higher gain with a large scanning angle; the maximum gain directions of the special directional diagram are symmetrically distributed between the normal direction of the array plane and the maximum scanning angle direction close to the maximum scanning angle direction so as to form the characteristic of a concave center of the directional diagram; the central concave depth of the array element directional diagram is designed according to the array group requirement; and the array factor directivity is stronger, the central concaveis deeper. Stable gain of the low-profile phased-array antenna in the broad scanning angel range can be realized or the requirement of higher gain with a large scanning angle can be satisfied under the premise of not changing the phased array factors.

Description

technical field [0001] The invention belongs to the technical field of wide-angle scanning phased array antennas, and in particular relates to a wide-angle scanning phased array antenna and a design method using special pattern array elements. Background technique [0002] At present, wide-angle scanning phased array antennas have a wide range of application requirements. In the field of mobile communications, the massive MIMO technology (massive MIMO) applied in 4.5G and 5G requires base station antennas to have wide-angle scanning capabilities to achieve effective and uniform coverage of the cell within the scanning range. In the field of space-borne antennas, for low-earth orbit satellites, the phased array antennas carried by them are also required to achieve effective coverage within the coverage area. Since the vertical height of the near-Earth satellite from the ground is much smaller than the radius of the earth, when the scanning reaches the maximum angle, the dist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q9/20H01Q21/29
Inventor 邹艳林孔晓佳薛裕晓郭景丽王勇孙保华
Owner XIDIAN UNIV
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