Antenna array, antenna device and display device including the same

Patent metadata

Field	Value
Publication number	US-11848501-B2
Application number	US-202217579834-A
Country	US
Kind code	B2
Filing date	Jan 20, 2022
Priority date	Jan 20, 2021
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

An antenna array according to an embodiment includes antenna elements arranged in a predetermined direction. Each antenna element includes a first radiation body, a second radiation body to be spaced apart from the first radiation body in a first direction, a third radiation body to be spaced apart from the first radiation body in a second direction, a first signal pad and a second signal pad to supply signals to the first radiation body, a first transmission line extending in the first direction to connect the first signal pad and the first radiation body, a second transmission line extending in the second direction to connect the second signal pad and the first radiation body, a third transmission line configured to connect the first radiation body and the second radiation body, and a fourth transmission line configured to connect the first radiation body and the third radiation body.

First claim

What is claimed is:

1. An antenna device comprising:
an antenna array comprising a plurality of antenna elements arranged in a predetermined direction, each antenna element comprising:
a first radiation body;
a second radiation body disposed to be spaced apart from the first radiation body in a first direction;
a third radiation body disposed to be spaced apart from the first radiation body in a second direction;
a first signal pad and a second signal pad configured to supply signals to the first radiation body;
a first transmission line extending in the first direction to connect the first signal pad and the first radiation body;
a second transmission line extending in the second direction to connect the second signal pad and the first radiation body;
a third transmission line configured to connect the first radiation body and the second radiation body; and
a fourth transmission line configured to connect the first radiation body and the third radiation body;

wherein a flexible printed circuit board is bonded to the antenna array, the flexible printed circuit board comprising a plurality of circuit wirings connected to the first signal pad and the second signal pad.

2. The antenna device according to claim 1 , wherein the plurality of antenna elements are arranged to share at least a portion thereof with each other.

3. The antenna device according to claim 2 , wherein the plurality of antenna elements comprises a first antenna element and a second antenna element which are adjacent to each other, and the first antenna element and the second antenna element share one radiation body with each other.

4. The antenna device according to claim 3 , wherein the shared one radiation body serves as the second radiation body of the first antenna element and the third radiation body of the second antenna element.

5. The antenna device according to claim 3 , wherein the antenna further comprising:
a bonding pad; and
a ground line configured to connect the bonding pad and the radiation body shared by the first antenna element and the second antenna element.

6. The antenna device according to claim 3 , wherein each antenna element further comprises:
a first ground pad disposed around the first signal pad; and
a second ground pad disposed around the second signal pad.

7. The antenna device according to claim 6 , wherein the antenna further comprises a ground line configured to connect the radiation body shared by the first antenna element and the second antenna element and the first ground pad or the second ground pad.

8. The antenna device according to claim 1 , wherein the plurality of antenna elements are arranged to be spaced apart from each other.

9. The antenna device according to claim 8 , wherein a separation distance between adjacent antenna elements of the plurality of antenna elements is 0.5 mm or more.

10. The antenna device according to claim 8 , wherein the antenna further comprises:
a boundary ground line disposed between adjacent antenna elements of the plurality of antenna elements; and
a bonding pad connected to an end of the boundary ground line.

11. The antenna device according to claim 10 , wherein the boundary ground line comprises:
a first segment extending in a longitudinal direction of the antenna element between the adjacent antenna elements; and
a second segment connected with the first segment and surrounding the plurality of antenna elements.

12. The antenna device according to claim 8 , wherein each antenna element further comprises:
a first ground pad disposed around the first signal pad; and
a second ground pad disposed around the second signal pad.

13. The antenna device according to claim 12 , wherein the antenna further comprises a boundary ground line disposed between adjacent antenna elements.

14. The antenna device according to claim 13 , wherein the boundary ground line comprises:
a first segment configured to connect a first ground pad of one of the adjacent antenna elements to a second ground pad of the other one of the adjacent antenna elements;
a second segment surrounding the plurality of antenna elements; and
a third segment extending between the adjacent antenna elements in the longitudinal direction of the antenna element to connect the first segment and the second segment.

15. The antenna device according to claim 1 , wherein an angle between the first direction and the second direction is 80° to 100°.

16. The antenna device according to claim 1 , wherein the first radiation body, the second radiation body and the third radiation body have a rhombus shape;
the first transmission line and the second transmission line are connected to two adjacent sides of the first radiation body, respectively;
the third transmission line connects two facing sides of the first radiation body and the second radiation body to each other; and
the fourth transmission line connects two facing sides of the first radiation body and the third radiation body to each other.

17. The antenna device according to claim 1 , wherein the first radiation body, the second radiation body and the third radiation body have a square shape;
the first transmission line and the second transmission line are connected to two adjacent vertices of the first radiation body, respectively;
the third transmission line connects two facing vertices of the first radiation body and the second radiation body to each other; and
the fourth transmission line connects two facing vertices of the first radiation body and the third radiation body.

18. A display device comprising the antenna device according to claim 1 .

19. The antenna device according to claim 1 , wherein the flexible printed circuit board further comprises:
a plurality of grounds disposed at positions in which respective signal pads face each other with them interposed therebetween when the antenna array is bonded.

20. An antenna array comprising:
a plurality of antenna elements arranged in a predetermined direction, each antenna element comprising:
a first radiation body;
a second radiation body disposed to be spaced apart from the first radiation body in a first direction;
a third radiation body disposed to be spaced apart from the first radiation body in a second direction;
a first signal pad and a second signal pad configured to supply signals to the first radiation body;
a first transmission line extending in the first direction to connect the first signal pad and the first radiation body;
a second transmission line extending in the second direction to connect the second signal pad and the first radiation body;
a third transmission line configured to connect the first radiation body and the second radiation body;
a fourth transmission line configured to connect the first radiation body and the third radiation body;
a first ground pad disposed around the first signal pad; and
a second ground pad disposed around the second signal pad.

Assignees

• Dongwoo Fine Chem Co Ltd

Inventors

• Kim Jong Min
• Lee Young Su
• Huh Yoon Ho

Classifications

• H01Q21/065 Primary

  Patch antenna array · CPC title

• H01Q1/44

  using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q1/241 Primary

  used in mobile communications, e.g. GSM (H01Q1/247, H01Q1/248 take precedence) · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title