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Antenna array directional diagram switching system

An antenna array direction and switching system technology, applied in the field of communication, can solve the problems of coupling between antennas, difficult maintenance, high power consumption, etc., and achieve the effect of reducing the number of antennas, reducing the size of the system, and achieving high speed.

Pending Publication Date: 2022-01-07
上海微波技术研究所(中国电子科技集团公司第五十研究所)
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AI Technical Summary

Problems solved by technology

If a corresponding antenna is integrated on the platform for each scenario, it will bring a series of problems such as large size, high power consumption, high cost, difficult maintenance, and coupling between antennas.

Method used

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  • Antenna array directional diagram switching system
  • Antenna array directional diagram switching system
  • Antenna array directional diagram switching system

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0021] The invention provides an antenna array pattern switching system, such as figure 1 As shown, it includes an array antenna, an excitation weight setting device and an excitation weight memory. When the array antenna is excited by different power sources, it can realize different directional patterns.

[0022] In a preferred example, two sets of excitation weights are pre-stored in the excitation weight memory. When these two sets of excitation weights act on the array antenna, they can respectivel...

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Abstract

The invention provides an antenna array directional diagram switching system which comprises an array antenna, an excitation weight setting device and an excitation weight memory. Different directional diagrams can be realized when the array antenna is excited by different power supplies, excitation weights are stored in the excitation weight memory, and the excitation weight setting device adjusts each antenna unit in the array antenna according to the excitation weight to present different directional diagrams. According to the invention, two directional diagrams of flat top and cosecant square are realized by adjusting the excitation weight of each unit of the same array antenna, so that the number of antennas can be reduced, and the purposes of reducing the size of the system, reducing the cost of the system and reducing the maintenance difficulty of device are achieved. A directional diagram switching mechanism has the advantages of being high in speed, high in efficiency, convenient to operate and the like.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular, to an antenna array pattern switching system. Background technique [0002] In the field of modern military and civilian communications, in order to ensure efficient and stable communications, different application scenarios often require antenna patterns to have different shapes. For example: air-ground bistatic radar needs to achieve full coverage of the main lobe to a specific area, so the pattern of this radar antenna is often designed as a flat top. This is considering that the gain in the sector of the flat-top pattern is equal, which can provide equal-quality signals to users within a given range. The ground-to-air warning search radar needs to achieve coverage of dynamic flying targets within a certain distance and a certain elevation angle range, so the pattern of this radar antenna often adopts the cosecant square pattern. This is because when the flying t...

Claims

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Application Information

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IPC IPC(8): H01Q3/00H01Q21/00
CPCH01Q3/00H01Q21/00
Inventor 赵程陈炜民王芳赵怀松刘辉
Owner 上海微波技术研究所(中国电子科技集团公司第五十研究所)
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