Antenna unit and antenna array

Patent metadata

Field	Value
Publication number	US-11322858-B2
Application number	US-202016898671-A
Country	US
Kind code	B2
Filing date	Jun 11, 2020
Priority date	Dec 15, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

An antenna unit and an antenna array. The antenna unit includes M layers of cross metal patches, M layers of dielectric substrates, and a metal ground layer, where M is an integer greater than 1. In addition, an ith-layer dielectric substrate is disposed between an ith-layer cross metal patch and an (i+1)th-layer cross metal patch. The ith-layer cross metal patch, the ith-layer dielectric substrate, and the (i+1)th-layer cross metal patch are sequentially stacked, and i is an integer ranging from 1 to M−1. An Mth-layer cross metal patch, an Mth-layer dielectric substrate, and the metal ground layer are sequentially stacked. The antenna unit and the antenna array formed by units may have a good polarization feature, a relatively wide operating bandwidth, and a relatively good phase shift feature.

First claim

What is claimed is:

1. An antenna unit, comprising: M layers of cross metal patches, M layers of dielectric substrates, and a metal ground layer, wherein M is an integer greater than 1;
an i th -layer dielectric substrate is disposed between an i th -layer cross metal patch and an (i+1) th -layer cross metal patch, and the i th -layer cross metal patch, the i th -layer dielectric substrate and the (i+1) th -layer cross metal patch are sequentially stacked in a first sequential stack, wherein i is an integer ranging from 1 to M−1; and
an M th -layer cross metal patch, an M th -layer dielectric substrate, and the metal ground layer are sequentially stacked in a second sequential stack;
wherein each element in each of the first sequential stack and the second sequential stack is disposed entirely above or entirely below adjoining elements in the first sequential stack or the second sequential stack.

2. The antenna unit according to claim 1 , wherein projection, on a horizontal plane, of a geometric center of each of the M layers of cross metal patches overlaps, and the horizontal plane is a plane parallel to the metal ground layer.

3. The antenna unit according to claim 1 , wherein
shapes of different layers of cross metal patches of the M layers of cross metal patches are the same; or
shapes of different layers of cross metal patches of the M layers of cross metal patches are not completely the same; or
shapes of different layers of cross metal patches of the M layers of cross metal patches are completely different.

4. The antenna unit according to claim 3 , wherein when the shapes of the different layers of cross metal patches of the M layers of cross metal patches are the same,
sizes of the different layers of cross metal patches of the M layers of cross metal patches are the same; or
sizes of the different layers of cross metal patches of the M layers of cross metal patches are not completely the same; or
sizes of the different layers of cross metal patches of the M layers of cross metal patches are completely different.

5. The antenna unit according to claim 3 , wherein when the shapes of the different layers of cross metal patches of the M layers of cross metal patches are the same, an area of the i th -layer cross metal patch is less than an area of the (i+1) th -layer cross metal patch.

6. The antenna unit according to claim 1 , wherein the cross metal patch comprises two rectangular metal patches that are perpendicular to each other.

7. The antenna unit according to claim 6 , wherein the two rectangular metal patches that are perpendicular to each other are integrally formed.

8. The antenna unit according to claim 1 , wherein
thicknesses of different layers of dielectric plates of the M layers of dielectric substrates are the same; or
thicknesses of different layers of dielectric plates of the M layers of dielectric substrates are not completely the same; or
thicknesses of different layers of dielectric plates of the M layers of dielectric substrates are completely different.

9. The antenna unit according to claim 1 , wherein
the antenna unit is an integrally formed multi-layer printed circuit board; or
the antenna unit is formed by bonding a plurality of single-layer printed circuit boards; or
the antenna unit is formed by bonding a plurality of single-layer printed circuit boards and a plurality of multi-layer printed circuit boards.

10. An antenna array, comprising an antenna unit, the antenna unit comprising M layers of cross metal patches, M layers of dielectric substrates, and a metal ground layer, wherein M is an integer greater than 1;
an i th -layer dielectric substrate is disposed between an i th -layer cross metal patch and an (i+1) th -layer cross metal patch, and the i th -layer cross metal patch, the i th -layer dielectric substrate and the (i+1) th -layer cross metal patch are sequentially stacked in a first sequential stack, wherein i is an integer ranging from 1 to M−1; and
an M th -layer cross metal patch, an M th -layer dielectric substrate, and the metal ground layer are sequentially stacked in a second sequential stack;
wherein each element in each of the first sequential stack and the second sequential stack is disposed entirely above or entirely below adjoining elements in the first sequential stack or the second sequential stack.

11. The antenna array according to claim 10 , wherein the antenna array comprises a plurality of antenna units, and the plurality of antenna units are periodically arranged.

12. The antenna array according to claim 11 , wherein a spacing between adjacent antenna units of the plurality of antenna units is D, and D is greater than or equal to 0.3 times an operating wavelength and is less than or equal to 0.6 times the operating wavelength.

13. An electronic device, comprising an antenna unit, the antenna unit comprising M layers of cross metal patches, M layers of dielectric substrates, and a metal ground layer, wherein M is an integer greater than 1;
an i th -layer dielectric substrate is disposed between an i th -layer cross metal patch and an (i+1) th -layer cross metal patch, and the i th -layer cross metal patch, the i th -layer dielectric substrate and the (i+1) th -layer cross metal patch are sequentially stacked in a first sequential stack, wherein i is an integer ranging from 1 to M−1; and
an M th -layer cross metal patch, an M th -layer dielectric substrate, and the metal ground layer are sequentially stacked in a second sequential stack;
wherein each element in each of the first sequential stack and the second sequential stack is disposed entirely above or entirely below adjoining elements in the first sequential stack or the second sequential stack.

Assignees

• Huawei Tech Co Ltd

Inventors

• Xie Qingming
• Li Long
• Cao Guoliang
• Shi Rui
• Geng Yang

Classifications

• H01Q9/0414

  in a stacked or folded configuration · CPC title

• H01Q15/0026

  said selective devices having a stacked geometry or having multiple layers · CPC title

• H01Q15/0086

  said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials · CPC title

• H01Q21/0025

  Modular arrays · CPC title

• H01Q21/065 Primary

  Patch antenna array · CPC title