Layered design method for large-scale wide-angle scanning phased-array antenna

A phased array antenna, wide-angle scanning technology, applied in antennas, antenna arrays, design optimization/simulation, etc., to achieve the effect of widening the application background, reducing usage, and low sidelobe performance

Pending Publication Date: 2022-04-12
NANJING UNIV OF SCI & TECH
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Problems solved by technology

The method of hierarchical design of large-scale antenna arrays has also entered people's field of vision, but the classic sub-array hierarchical design method focuses more on the division and design of the first-level irregular sub-arrays, and the second-level sub-array modules are only simply put together

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  • Layered design method for large-scale wide-angle scanning phased-array antenna
  • Layered design method for large-scale wide-angle scanning phased-array antenna
  • Layered design method for large-scale wide-angle scanning phased-array antenna

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Embodiment Construction

[0020] A kind of hierarchical design method of large-scale wide-angle scanning phased array antenna based on adaptive covariance matrix evolution strategy (CMA-ES) and heuristic iterative convex relaxation programming method (H-ICRP) proposed by the present invention, the steps are as follows:

[0021] The first step is to establish a layered design model of a large-scale phased array antenna; let the irregular sub-arrays first form a module panel, and then arrange these module panels sparsely, by placing each control unit (ie TR component) In the sub-array layout, the control unit includes low noise amplifier, power amplifier, limiter, phase shifter, etc.;

[0022] Establish a planar array composed of M×N antenna elements, the antenna elements of the planar array are placed along the x-axis and y-axis respectively, any element on the plane can be expressed as two linearly independent vectors d 1 and d 2 The integer weighted linear combination of

[0023] r mn =md 1 +nd 2...

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Abstract

The invention discloses a large-scale wide-angle scanning phased-array antenna hierarchical design method, which comprises the following steps of: establishing a phased-array antenna hierarchical design model, and forming a module panel by each irregular sub-array; constructing a candidate matrix of the module panel; determining the number of control units based on the relationship between the minimum number of control nodes and scanning angle coverage; sampling the target patterns at different scanning angles; determining an initial point vector based on the target pattern sampling value; obtaining an array configuration model through a convex relaxation method based on the initial point vector; solving the phase center of a module panel through an adaptive covariance matrix evolution strategy, and carrying out the tiling of a first-stage sub-array panel. The phase center of the module panel is thinned on the basis of an original method, so that the antenna units are effectively saved, the manufacturing cost is reduced, the antenna performance of a large-scale array is further improved, wide-angle scanning can be realized, and the method has great significance in practical application.

Description

technical field [0001] The invention belongs to the technical field of optimization design of sparse array antennas, and in particular relates to a layered design method of a large-scale wide-angle scanning phased array antenna. Background technique [0002] With the wide application of sub-array technology in the design of phased array antennas such as modern radar and satellite communications, the number and complexity of antennas have increased significantly in order to meet the needs of multi-function and multi-tasks such as communication, navigation, and positioning. Issues such as antenna layout, cost, and electromagnetic compatibility control pose serious challenges. How to ensure the performance of the array antenna while reducing the number of front channels as much as possible has very important research significance. The sparse array antenna is arranged in an array with non-uniform intervals, and the array elements are placed sparsely, so that the radiation chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00G06F30/20
Inventor 顾鹏飞陈如山丁大志樊振宏
Owner NANJING UNIV OF SCI & TECH
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