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A Low Sidelobe Design Method for Large Spacing Beamforming Array Antennas

A beamforming and array antenna technology, applied in the directions of antennas, antenna arrays, and individually powered antenna arrays, etc., can solve the problem of high side lobes, achieve the effect of simple design process and good application space expansion

Active Publication Date: 2021-02-23
中国人民解放军63660部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a low-sidelobe design method for large-spacing beamforming array antennas to solve the technical problem that grating lobes appear in the pattern pattern of the array factor, which leads to excessively high sidelobes in the pattern pattern of the antenna shaping surface

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  • A Low Sidelobe Design Method for Large Spacing Beamforming Array Antennas
  • A Low Sidelobe Design Method for Large Spacing Beamforming Array Antennas
  • A Low Sidelobe Design Method for Large Spacing Beamforming Array Antennas

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Embodiment

[0048] In the high power microwave radiation system, considering factors such as power capacity, it is necessary to use such as figure 1 The pyramidal horn antenna shown is used as the antenna unit, and its H-plane pattern is as follows figure 2 As shown, by beamforming, the azimuth plane is generated as image 3 The target antenna array pattern is shown. Since the power capacity of the pyramid horn needs to be improved by vacuuming, it is necessary to use a dielectric window to seal the radiation opening of the pyramid horn, and the dielectric window is fixed on the flange around the horn mouth surface with screws. When the pyramidal horn antenna works at the frequency of 2.856GHz, the standing wave ratio is less than 1.15, and the length of the aperture surface is about 1.290.λ. use as Figure 4 In the conventional uniform linear array arrangement method shown, since the array element spacing is greater than λ, large side lobes will be generated in the pattern of the sha...

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Abstract

The invention provides a low sidelobe design method for a large-spacing beamforming array antenna. The method comprises the steps of determining a target array factor directional diagram nu employinga target antenna array directional diagram and a unit antenna directional diagram according to a lobe diagram multiplication principle; selecting the number of array elements, and comprehensively designing an N-element equidistant linear array by utilizing a Woodworth-Lawson sampling method, so that the N-element equidistant linear array can realize a target array factor directional diagram; and translating the array elements in the N-element equidistant linear array along the direction vertical to the array axis, so that the N-element equidistant linear array is converted into a triangular grid planar array, and a forming directional diagram with low sidelobes is formed. The method is simple in design process, easy to operate and high in universality, and can be applied to design of various large-spacing beam forming array antennas.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, and in particular relates to a low sidelobe design method of a large spacing beamforming array antenna. Background technique [0002] Antennas or array antennas play an irreplaceable role as signal transmitting and receiving terminals in wireless communication systems. In practical applications, a single antenna usually has disadvantages such as weak directivity and low gain. The array antenna is more and more widely used because it is easy to realize multi-beam, phased beam scanning and shaped beam. The array with the smallest element spacing greater than one wavelength in the array antenna is called a large-spacing array. When using an array antenna for beamforming, if the distance between the array elements is greater than one wavelength, grating lobes will appear in the pattern pattern of the array factor in the conventional array arrangement, resulting in excessively high sidelo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/00H01Q21/06H01Q13/02
CPCH01Q13/02H01Q21/00H01Q21/064
Inventor 白维达晏峰江涛宗子健熊正锋闫琛
Owner 中国人民解放军63660部队