A Wide Bandwidth Angular Scanning Phased Array Antenna Based on Triangular Grid Arrangement

Abstract

The invention discloses a wide bandwidth angular scanning phased array antenna based on triangular grid arrangement, which belongs to the fields of wireless communication technology, radar technology and the like. The antenna of the present invention adopts a strong coupling dipole antenna unit, which has the characteristics of wide bandwidth; adopts parallel double wires and short-circuit stubs as the feeding balun, introduces an isolated metal wall, and optimizes the standing wave of the antenna; through the passive parasitic patch layer and super The material wide-angle matching layer improves the wide-angle and broadband scanning characteristics of the array; the triangular grid arrangement is adopted to increase the array element spacing and reduce the number of array elements, thereby reducing the cost; the antenna layer adopts a laminated structure between different dielectric substrates At the same time, it is easy to process, and the medium is filled between the dipole unit and the first metal floor, which greatly reduces the section.

Description

technical field

[0001] The invention belongs to the fields of wireless communication technology, radar technology, etc., and specifically relates to a phased array antenna unit with wide-angle and broadband scanning characteristics, which is arranged in a triangular grid and has the advantages of large array element spacing and small number, and is suitable for Low cost radar and communication system. Background technique

[0002] In radar and communication systems, phased array antennas are widely used due to their advantages of high gain, fast beam scanning, high precision and easy beamforming. In the research and development of phased array antennas, wide-angle and broadband scanning are two important topics. Usually, the scanning range of the array beam needs to reach ±60°, so that the scanning range of the three sets of array beams can cover the whole airspace. However, the active standing wave of the array unit is different at different scanning angles due to the exi...

Examples

Embodiment 1

[0021] The antenna of this embodiment works at 7-13 GHz, and its unit structure 3D view, side view, and top view are shown in Figures 1-3 respectively, and the size of the array element is 16mm×13mm, which is about 0.69λ h ×0.56λ h (λ h for the wavelength of 13GHz).

[0022] The antenna consists of two layers of metamaterial wide-angle matching layers 10 and 20 from top to bottom, and a layer of non-marginal parasitic patch layer 30, as shown in Figure 1(a). The antenna layer is a dielectric laminated structure, including 40 to 70 layers, see Figure 1(b), the vertical distribution of each layer is shown in figure 2 .

[0023] The thicknesses of the first to fourth dielectric substrates 40 to 70 of the antenna layer are 0.127 mm, 2.973 mm, 0.254 mm, and 1.624 mm in sequence, and the relative dielectric constants are all 2.94.

[0024] The dipole unit 41 is printed on the upper surface of the first dielectric substrate 40, see image 3 (a); the first metal floor 61 is betwe...

technical field

[0001] The invention belongs to the fields of wireless communication technology, radar technology, etc., and specifically relates to a phased array antenna unit with wide-angle and broadband scanning characteristics, which is arranged in a triangular grid and has the advantages of large array element spacing and small number, and is suitable for Low cost radar and communication system. Background technique

[0002] In radar and communication systems, phased array antennas are widely used due to their advantages of high gain, fast beam scanning, high precision and easy beamforming. In the research and development of phased array antennas, wide-angle and broadband scanning are two important topics. Usually, the scanning range of the array beam needs to reach ±60°, so that the scanning range of the three sets of array beams can cover the whole airspace. However, the active standing wave of the array unit is different at different scanning angles due to the exi...

Examples

Embodiment 1

[0021] The antenna of this embodiment works at 7-13 GHz, and its unit structure 3D view, side view, and top view are shown in Figures 1-3 respectively, and the size of the array element is 16mm×13mm, which is about 0.69λ h ×0.56λ h (λ h for the wavelength of 13GHz).

[0022] The antenna consists of two layers of metamaterial wide-angle matching layers 10 and 20 from top to bottom, and a layer of non-marginal parasitic patch layer 30, as shown in Figure 1(a). The antenna layer is a dielectric laminated structure, including 40 to 70 layers, see Figure 1(b), the vertical distribution of each layer is shown in figure 2 .

[0023] The thicknesses of the first to fourth dielectric substrates 40 to 70 of the antenna layer are 0.127 mm, 2.973 mm, 0.254 mm, and 1.624 mm in sequence, and the relative dielectric constants are all 2.94.

[0024] The dipole unit 41 is printed on the upper surface of the first dielectric substrate 40, see image 3 (a); the first metal floor 61 is betwe...

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