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A sparse array antenna and its design method

A design method and sparse array technology, applied in the field of radio communication, can solve the problems of low side lobes, cannot have both, cannot reduce the difference side lobes, etc., and achieve the effect of solving the contradiction between the sum and the difference and reducing the difference side lobes.

Active Publication Date: 2021-04-02
西安黄河机电有限公司
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Problems solved by technology

[0004] Regarding the above-mentioned technical solution, the inventors found that there are at least some technical problems as follows: For example, although the sum-and-difference integrated phased array radar antenna feeder system realizes the simultaneous sum-difference angle measurement of the azimuth plane, it cannot effectively reduce the Differential sidelobe, let alone the sum beam and difference beam with lower sidelobe at the same time, to solve the contradiction between sum and difference

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  • A sparse array antenna and its design method
  • A sparse array antenna and its design method
  • A sparse array antenna and its design method

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Embodiment Construction

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0035] In addition, the drawings are merely schematic illustrations of embodiments of the present invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.

[0036] As descr...

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Abstract

The embodiment of the invention provides a sparse array antenna and a design method thereof, and the design method comprises the steps that an antenna array plane is divided into four quadrants, eachquadrant is divided into different sub-arrays, and each sub-array of each quadrant and the corresponding sub-arrays of the other three quadrants use a sum-difference device to obtain sub-array level sum-difference signals. And the sub-array-level sum and difference signals are respectively weighted and then synthesized to obtain the sum and difference signals of the whole array plane. According tothe embodiment of the invention, the sum wave beam and the difference wave beam with lower sidelobes can be obtained, and the sum-difference contradiction is better solved. Meanwhile, the number of density weighting units is small, and the cost of the antenna is greatly reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of radio communication, and in particular to a sparse array antenna and a design method thereof. Background technique [0002] The monopulse radar has the function of measuring the angle of the sum and difference beam, and the antenna needs to form the sum and difference beam in the azimuth and elevation planes in order to measure the azimuth and elevation angles of the target. In the active phased array, to achieve better sum-difference beams, two sets of feed networks must be used to achieve low sidelobes of the sum-difference beams at the same time, and its structure is quite complicated. [0003] In related technologies, the concept of sum-difference integration is adopted, and a multi-layer stripline sum-difference integration network is adopted to realize that it is applicable to a one-dimensional line array antenna. Or through a small-volume, light-weight sum-difference integrat...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q25/02
CPCH01Q25/02
Inventor 崔卫东马凯李攀陈芳兰王兴伟何云锋王国泉惠兆东
Owner 西安黄河机电有限公司
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