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CN-122026058-A - Antenna unit and antenna equipment

CN122026058ACN 122026058 ACN122026058 ACN 122026058ACN-122026058-A

Abstract

The disclosure provides an antenna unit and antenna equipment, which belong to the technical field of antennas and aim to reduce the height of the antenna under the condition that a low elevation section has high gain characteristics, wherein the antenna unit comprises a first substrate, a plurality of radiation groups, a plurality of isolation structures and a plurality of isolation structures, wherein the first substrate comprises a first side and a second side which are opposite, the first side comprises a feed network, the second side comprises a first metal layer, the first metal layer is configured to be grounded, the plurality of radiation groups are positioned on the second side, each radiation group comprises a radiation sheet which is opposite to the first metal layer, a first metal arm and a second metal arm which are connected to one side of the radiation sheet close to the first metal layer, the first metal arm is connected with a feed point in the feed network, the second metal arm is connected with the first metal layer, the isolation structures are positioned on the second side, and the second metal layer is configured on the outer surface of the isolation structures, and the plurality of radiation groups are isolated by the isolation structures.

Inventors

  • JIN YUNNAN
  • GUO LIANG

Assignees

  • 北京京东方技术开发有限公司
  • 京东方科技集团股份有限公司

Dates

Publication Date
20260512
Application Date
20241112

Claims (15)

  1. 1. An antenna unit, comprising: A first substrate comprising opposing first and second sides, the first side comprising a feed network and the second side comprising a first metal layer configured to be grounded; The radiation groups are positioned on the second side, each radiation group comprises a radiation sheet arranged opposite to the first metal layer, and a first metal arm and a second metal arm which are connected to one side of the radiation sheet close to the first metal layer, wherein the first metal arm is connected with a feed point in the feed network, and the second metal arm is connected with the first metal layer; the isolation structure is positioned on the second side, and a second metal layer is arranged on the outer surface of the isolation structure; Wherein a plurality of said radiation groups are isolated by said isolation structures.
  2. 2. The antenna unit of claim 1, wherein the second metal arm is connected to a first side of the radiating patch, the second metal arm having a dimension in the direction of the first side that is smaller than the dimension of the first side.
  3. 3. The antenna unit according to claim 2, characterized in that the dimension of the second metal arm in the direction of the first edge is smaller than the perpendicular distance between the first metal layer and the radiating patch.
  4. 4. The antenna unit according to claim 1, wherein a dimension of the second metal arm in a thickness direction of the first substrate is greater than or equal to a vertical distance between the first metal layer and the radiation sheet.
  5. 5. The antenna element of claim 1, wherein the isolation structure comprises a plurality of spacers, each of the spacers having one side connected to the first metal layer; Wherein every two adjacent isolation sheets in the plurality of isolation sheets are intersected, and the plurality of radiation groups are respectively positioned in different intersection areas; Wherein the dimension of the spacer in the thickness direction of the first substrate is not greater than the vertical distance between the first metal layer and the radiation sheet.
  6. 6. The antenna unit of claim 5, wherein the intersecting region formed by intersecting the plurality of spacers includes an intermediate region surrounded by the plurality of spacers; wherein a plurality of said radiation patterns are located in different intersection areas, respectively, other than said intermediate area.
  7. 7. The antenna unit of claim 5, wherein the spacer has an L-shape in orthographic projection on the first substrate, wherein, The plurality of the isolation sheets are arranged on the first substrate in a rotationally symmetrical mode, and the plurality of the radiation groups are arranged on the first substrate in a rotationally symmetrical mode.
  8. 8. The antenna unit of claim 7, wherein an orthographic projection of at least one edge of the spacer onto the first substrate comprises at least one of a straight line, a wave, a zigzag.
  9. 9. The antenna element of claim 7, wherein said radiating patch is rectangular in shape; The long side dimension of the isolation sheet is at least not smaller than 1.5 times of the long side dimension of the radiation sheet, and the short side dimension of the isolation sheet is not smaller than the short side dimension of the radiation sheet.
  10. 10. The antenna unit of claim 5, wherein the spacer comprises a second substrate and a second metal layer on an outer surface of the second substrate.
  11. 11. The antenna element of claim 1, wherein a plurality of said radiating groups are rotationally symmetrically arranged on said first substrate and the feed phase between each adjacent two of said radiating groups is 90 degrees apart.
  12. 12. The antenna unit of claim 1, wherein the first substrate further comprises a metallized via having one end connected to the first metal layer and another end located on the first side.
  13. 13. The antenna unit according to claim 1, wherein the shape of the radiation piece includes a rectangle, and the dimension of the first metal arm in the thickness direction of the first substrate is smaller than half the dimension of the long side of the radiation piece.
  14. 14. The antenna unit of claim 13, wherein the dimension of the first metal arm in the thickness direction of the first substrate and the long side dimension of the radiating patch are both less than 0.2λ, where λ is an operating wavelength of a center frequency point of the antenna unit.
  15. 15. An antenna device comprising an antenna unit according to any of claims 1-14.

Description

Antenna unit and antenna equipment Technical Field The disclosure relates to the technical field of antennas, and in particular relates to an antenna unit and antenna equipment. Background Currently, in order to make the antenna have a high gain in a low elevation angle section, means of changing the shape of a radiator, optimizing a metal reflecting cavity or optimizing the whole ground size are generally adopted, however, the means all need to increase the height of the antenna, which is difficult to meet the miniaturization requirement of the antenna. Disclosure of Invention Based on the background art, the disclosure provides an antenna unit and an antenna device. In a first aspect of the present disclosure, there is provided an antenna unit comprising: A first substrate comprising opposing first and second sides, the first side comprising a feed network and the second side comprising a first metal layer configured to be grounded; The radiation groups are positioned on the second side, each radiation group comprises a radiation sheet arranged opposite to the first metal layer, and a first metal arm and a second metal arm which are connected to one side of the radiation sheet close to the first metal layer, wherein the first metal arm is connected with a feed point in the feed network, and the second metal arm is connected with the first metal layer; the isolation structure is positioned on the second side, and a second metal layer is arranged on the outer surface of the isolation structure; Wherein a plurality of said radiation groups are isolated by said isolation structures. Illustratively, the second metal arm is connected to a first edge of the radiating patch, the second metal arm having a dimension in the direction of the first edge that is smaller than the dimension of the first edge. Illustratively, the second metal arm has a dimension in the direction of the first edge that is less than the perpendicular distance between the first metal layer and the radiating patch. Illustratively, a dimension of the second metal arm in a thickness direction of the substrate is greater than or equal to a perpendicular distance between the first metal layer and the radiation sheet. Illustratively, the isolation structure includes a plurality of spacers, each of which has one side connected to the first metal layer; Wherein every two adjacent isolation sheets in the plurality of isolation sheets are intersected, and the plurality of radiation groups are respectively positioned in different intersection areas; Wherein the dimension of the spacer in the thickness direction of the first substrate is not greater than the vertical distance between the first metal layer and the radiation sheet. Illustratively, the crossing area formed by crossing the plurality of the isolating sheets comprises a middle area, and the middle area is formed by encircling the plurality of isolating sheets; wherein a plurality of said radiation patterns are located in different intersection areas, respectively, other than said intermediate area. Illustratively, the spacer has an L-shaped orthographic projection on the first substrate, wherein, The plurality of the isolation sheets are arranged on the first substrate in a rotationally symmetrical mode, and the plurality of the radiation groups are arranged on the first substrate in a rotationally symmetrical mode. Illustratively, the orthographic projection of at least one edge of the spacer onto the first substrate includes at least one of a straight line, a wave, a zigzag. Illustratively, the radiating patch is rectangular in shape; The long side dimension of the isolation sheet is at least not smaller than 1.5 times of the long side dimension of the radiation sheet, and the short side dimension of the isolation sheet is not smaller than the short side dimension of the radiation sheet. Illustratively, the spacer includes a second substrate and a second metal layer on an outer surface of the second substrate. Illustratively, a plurality of the radiation groups are rotationally symmetrically arranged on the first substrate, and the feeding phases between every two adjacent radiation groups are different by 90 degrees. The first substrate further comprises a metallized via, one end of the metallized via is connected with the first metal layer, and the other end of the metallized via is located on the first side. Illustratively, the shape of the radiating patch includes a rectangle, and the dimension of the first metal arm in the thickness direction of the first substrate is smaller than half the dimension of the long side of the radiating patch. Illustratively, the dimension of the first metal arm in the thickness direction of the first substrate and the dimension of the long side of the radiation sheet are both smaller than 0.2λ, where λ is the operating wavelength of the center frequency point of the antenna unit. In a second aspect of the present disclosure, an antenna device is provided,