Conical conformal phased array antenna for X-band

An array antenna, X-band technology, applied in the field of aerospace and satellite communication systems, conical conformal phased array antenna, can solve the problems of multiple antenna layers, high antenna profile height, and insufficient scanning angle, etc., and achieve simple unit structure , Improve the effect of axial gain and pattern beam width

Active Publication Date: 2019-06-28
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this antenna is that the number of layers of the antenna is large, resulting in a high section height of the antenna.
However, the scan angle of this antenna is not wide enough due to being conformal to the cylindrical carrier

Method used

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  • Conical conformal phased array antenna for X-band
  • Conical conformal phased array antenna for X-band
  • Conical conformal phased array antenna for X-band

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0028] refer to figure 1 , the conical conformal phased array antenna of the present invention includes a conical carrier and two sub-arrays conformal thereto. Among them, the conical carrier 1 is the basic part of the antenna, that is, it is used as a part of the antenna itself. There are two sub-arrays on the conical carrier, and the first sub-array 2 covers the The second sub-array 3 is obtained by rotating the first sub-array 180° counterclockwise around the Z-axis, covering Each sub-array consists of 53 conformal elements operating in the X-band.

[0029] The two sub-arrays work together. When the beam scanning range is 20°≤θ≤136°, the first sub-array 2 is working, and the second sub-array 3 is in a standby state; when the beam scanning ra...

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Abstract

The invention provides a cone-shaped conformal phased array antenna for an X-band, and the problems of a small beam scanning angle and a narrow working bandwidth existing in the prior art are mainly solved. The implementation scheme is that two sub arrays with a conformal phase difference of 180 degrees are formed on a cone carrier, each sub array has a plurality of conformal units which are evenly arranged, conical surfaces are respectively covered, and the large-angle scanning in the ranges of theta which is larger than or equal to -136 degrees and smaller than or equal to -20 degrees and theta which is larger than or equal to 20 degrees and smaller than or equal to 136 degrees by changing the working states of the two sub arrays. When the beam scanning range is theta which is larger than or equal to 20 degrees and smaller than or equal to 136 degrees, the first sub array works, and the second sub array is in a standby state. When the beam scanning range is theta which is larger thanor equal to -136 degrees and smaller than or equal to -20 degrees, the second sub array works, and the first sub array is in a standby state. When a beam is directed at theta = 0 degree, the first sub array and the second sub array work at the same time. The antenna of the invention has the advantages of simple structure, large scanning angle and wide working bandwidth and can be used in aerospace and satellite communication systems.

Description

technical field [0001] The invention belongs to the field of microwave technology, in particular to a conical conformal phased array antenna, which can be used in aerospace and satellite communication systems. Background technique [0002] Compared with the traditional mechanical scanning antenna to achieve beam scanning by mechanical rotation, the phased array antenna beam is easy to form and has fast response speed, high positioning accuracy and wide scanning range. Phased array antennas are widely used in radar, satellite broadcasting, military communication, mobile base station wireless communication, airborne communication and many other fields. For phased array antennas, the beam scanning range is an important indicator, while the traditional planar phased array antennas will reduce the array aperture projected area when scanning at large angles, and under the influence of unit active impedance mismatch, its scanning angle Usually not more than ±60°, so that the scope...

Claims

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Application Information

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IPC IPC(8): H01Q21/29H01Q1/38H01Q1/48H01Q1/50
Inventor 姜文卫晓俊张文武高雨辰龚书喜
Owner XIDIAN UNIV
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