Phased-array antenna and design and expansion method thereof

A technology for phased array antennas and antenna units, which is applied to antennas, antenna arrays, and devices for manufacturing antenna arrays. The effect of the number of elements and cost, convenient assembly and disassembly, and high surface utilization efficiency

Pending Publication Date: 2019-07-26
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the most practical problem faced by phased array antennas is: the trade-off between good performance and complexity and cost
[0005] 1. The problem of low array surface efficiency still exists;
[0006] 2. No matter what array technology is used, the position of the antenna unit or sub-array

Method used

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  • Phased-array antenna and design and expansion method thereof
  • Phased-array antenna and design and expansion method thereof
  • Phased-array antenna and design and expansion method thereof

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Embodiment Construction

[0034] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the drawings and specific embodiments.

[0035] A phased array antenna, which includes a sub-array module that is periodically arranged, and the sub-array module includes a plurality of antenna units, a transceiver component module connected to the antenna unit, and a beamforming network connected to the transceiver component module. The antenna units are regularly arranged with uniform spacing, and the spacing between the antenna units is greater than one signal wavelength; the antenna units are divided into multiple types according to the offset position of the phase center, and the phase centers of different types of antenna units are located at different offset positions. , the aperture efficiency of the antenna unit gain is greater than 90%.

[0036] Optionally, the antenna unit has two types.

[0037] The design method of...

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Abstract

The invention discloses a phased-array antenna and a design and expansion method thereof, and belongs to the technical field of antennas. The antenna comprises sub-array modules which are periodicallyarranged, wherein each sub-array module comprises a plurality of antenna units, a transceiving module and a beam synthesis network, the plurality of antenna units are arranged at uniform distance, the distance among the antenna units is larger than a signal wavelength, the antenna units are divided to various types according to a polarization position of a phase center, and the phase centers of different types of antenna units are arranged at different polarization positions. The regular array framework has relatively high actinal surface utilization efficiency, relatively low array element numbers and cost and is suitable for engineering assembly and mass production, and the expansion of a large-size array performance parameter is facilitated.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a phased array antenna and its design and expansion method. Background technique [0002] Phased array antennas have flexible beam, arbitrary pointing and multi-beam capabilities, and are widely used in the fields of radar, communication and electronic warfare. However, the most practical problem faced by phased array antennas is: the trade-off between good performance and complexity and cost. [0003] In recent decades, there have been unconventional array designs that reduce the number of array elements, such as sparse arrays and sparse arrays, which can meet the design requirements of low sidelobes and reduce the cost of the array. However, the early sparse arrays and sparse arrays focused on the array design at the unit level. The array elements are arranged irregularly, which is not conducive to the modularization of engineering applications and destroys the continuity of ...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q21/06
CPCH01Q21/0087H01Q21/061
Inventor 姜海玲敦书波
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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