Wide-angle scanning mixing array supersparsity layout method without grating lobes

A wide-angle scanning and layout method technology, applied in antenna arrays, genetic laws, and devices for manufacturing antenna arrays, etc., can solve the problems of large arrays with multiple digital channels, high cost, and high complexity of array manufacturing, reducing the number of channels, Easy to assemble and process

Active Publication Date: 2017-05-10
XIAMEN UNIV
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Problems solved by technology

Although the above-mentioned methods reduce the number of array elements required, more digital channels are still required for large arrays, resulting in high complexity and high cost of manufacturing the array.

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  • Wide-angle scanning mixing array supersparsity layout method without grating lobes
  • Wide-angle scanning mixing array supersparsity layout method without grating lobes
  • Wide-angle scanning mixing array supersparsity layout method without grating lobes

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Embodiment Construction

[0032] 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 combination with specific implementation cases and with reference to the accompanying drawings.

[0033] The present invention adopts the layout method of the two-level non-uniform sub-array, and in the case of meeting the requirements of beam coverage, crossover level, beam resolution, sidelobe level, minimum spacing and other indicators, the minimum required DBF array is given. The number of digital channels, the number of units in the sub-array, the layout of the units, and the layout between sub-arrays. The sparse array comprehensive layout technology based on the two-level non-uniform sub-array is proposed. The structure of the array is composed of multiple identical sub-arrays. The spacing is also uneven. Under the framework of this two-level non-uniform sub-array, the grating lobe and side-lobe levels...

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Abstract

A wide-angle scanning mixing array supersparsity layout method without grating lobes relates to an antenna. A mixing array supersparsity layout method of a secondary inhomogeneous interval subarray is employed, namely a simulation multi-beam forming network is employed in the subarray, and different phase shift magnitudes are configured for the array elements to allow the subarray wave beam to realize the wide-angle airspace scanning. A plurality of subarrays are subjected to layout at inhomogeneous intervals to form a total array, after each subarray is outputted, the analog-digital sampling is performed, and one single subarray only need one digital channel so as to greatly reduce the number of the channels. The genetic algorithm is employed to optimize the distances of the internal subarray and between the subarrays, the minimum distance is controllable, and the side lobes and the grating lobe level can be inhibited in the condition of the wide-angle scanning to obtain a mixing array sparse layout with the average distance and the minimum distance of the array elements being far larger than half wavelength. The subarrays of the mixing sparse array employ the same structure, and are easy for processing, assembling and batch production, low in cost and wide in application.

Description

technical field [0001] The invention relates to an antenna, in particular to a super-sparse layout method of a grating-lobe wide-angle scanning hybrid array in the fields of radar, communication and electronic countermeasures. Background technique [0002] Compared with traditional RF beamforming arrays, digital beamforming (DBF) arrays have unique advantages such as flexible beams, strong anti-interference ability, and multiple beams at the same time. However, the required digital channels are relatively expensive, which limits DBF to some extent. array applications. In particular, for an electrically large-sized DBF array with a high-gain narrow beam, according to the traditional half-wavelength interval layout method, the number of digital channels required is huge. For example, a 10m long DBF array working at 3GHz has up to 200 digital channels. Therefore, how to reduce the number of required digital channels has become a key issue for large DBF arrays. [0003] Docum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00G06N3/12
CPCG06N3/126H01Q21/00H01Q21/0087
Inventor 刘颜回杨晶罗阡珂徐开达黄鑫唐益民刘洋甘建超杨善国
Owner XIAMEN UNIV
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