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Phased-array antenna structure having ultra-wideband large-angle scanning function

A phased array antenna, large-angle technology, applied in the direction of the antenna, antenna array, electrical components, etc., to achieve the effect of expanding the maximum scanning angle

Active Publication Date: 2019-06-21
合肥应为电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the present invention provides a phased array antenna structure with an ultra-wideband and large-angle scanning function to solve the problem of how to realize the wide-bandwidth angular scanning function under the condition that the number of antennas is limited in a specific range of small and medium diameters. question

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  • Phased-array antenna structure having ultra-wideband large-angle scanning function
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  • Phased-array antenna structure having ultra-wideband large-angle scanning function

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be described in more detail below with reference to the drawings and examples.

[0025] The phased array antenna with ultra-wideband and large-angle scanning function provided by the present invention is realized by installing an antenna array on a special-shaped reflective cavity structure.

[0026] Such as figure 1 As shown, the phased array antenna structure provided by the present invention includes an antenna transmitter 1 and an antenna array arranged on the antenna transmitter 1 .

[0027] The antenna transmitter 1 is a metal body with a special shape. Specifically, the antenna transmitter 1 is composed of upper and lower parts. The upper part is a pyramid-like tetrahedral structure, and the tetrahedron structure has four-quadrant rotational symmetry. The four faces of the tetrahedron are generally triangular in shape and form the reflective surfaces of the four quadrants of the antenna transmit...

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Abstract

The invention provides a phased-array antenna structure having an ultra-wideband large-angle scanning function. The phased-array antenna structure comprises an antenna emitter and an antenna array, wherein the antenna array is arranged on the antenna emitter, the antenna emitter is of a tetrahedral structure with appearance similar to pyramid, the tetrahedral structure has four-quadrant rotation symmetric characteristic, four surfaces of the tetrahedral structure are basically triangles and form four quadrantal reflection surfaces of the antenna emitter, and the reflection surfaces and a horizontal plane form a fixed oblique angle. With the adoption of the phased-array antenna structure, the maximum scanning angle of the antenna array is expanded, the maximum scanning angle can reach 65 degrees or above, and the large-angle scanning bandwidth can cover one to three times of frequency interval.

Description

technical field [0001] The invention belongs to the technical field of radar antennas, in particular to a small-sized ultra-wide bandwidth angle scanning phased array radar antenna for SCX band. Background technique [0002] In traditional broadband phased arrays, a single broadband antenna unit is usually designed first, and then these antenna units are formed into an array. In order to reduce the impact of mutual coupling between array elements on the performance of the array elements, it is desirable to increase the array element spacing as much as possible when forming an array. However, limited by the grating lobes of the array, in order to realize the requirement of large-angle scanning, the distance between array elements must be smaller than a certain range, and the number of array elements must reach a certain order of magnitude. Therefore, the expansion of phased array bandwidth and scanning range is greatly limited. And affected by the mutual coupling effect bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/10H01Q21/00
Inventor 汪佳娣凌玲章放
Owner 合肥应为电子科技有限公司