Antenna assembly and mobile terminal

Patent metadata

Field	Value
Publication number	US-12080959-B2
Application number	US-202017791508-A
Country	US
Kind code	B2
Filing date	Dec 10, 2020
Priority date	Jan 8, 2020
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

An antenna assembly and a mobile terminal include a first grounding part and a second grounding part and a slot, the first grounding part and the second grounding part are separated by the slot; at least a part of a first feed line is located in the slot or is located in a directly opposite position of the slot, the first feed line is configured to feed the first grounding part and electrically connected to the first grounding part; at least a part of a second feed line is located in the slot or is located in a directly opposite position of the slot, the second feed line is configured to feed one of the first grounding part and the second grounding part, and electrically connected to the other of the first grounding part and the second grounding part.

First claim

What is claimed is:

1. An antenna assembly, comprising:
a first grounding part and a second grounding part, wherein a slot is formed between the first grounding part and the second grounding part, and the first grounding part and the second grounding part are separated by the slot;
a first feed line, wherein at least a part of the first feed line is located in the slot or is located in a directly opposite position of the slot, wherein a first end of the first feed line is configured to feed the first grounding part, and wherein a second end of the first feed line is electrically connected to the first grounding part; and
a second feed line, wherein at least a part of the second feed line is located in the slot or is located in a directly opposite position of the slot, wherein a first end of the second feed line is configured to feed one of the first grounding part and the second grounding part, wherein a second end of the second feed line is electrically connected to the other of the first grounding part and the second grounding part, and wherein the first feed line and the second feed line are insulated and crossed.

2. The antenna assembly according to claim 1 , wherein
the slot is a symmetrical structure.

3. The antenna assembly according to claim 2 , wherein
the first feed line and the second feed line are crossed in a symmetrical plane of the slot.

4. The antenna assembly according to claim 3 , wherein
a part that is of the second feed line and that is located in the slot or is located in the directly opposite position of the slot, is located in the symmetrical plane of the slot and extends along the symmetrical plane of the slot.

5. The antenna assembly according to claim 2 , wherein
an extension path of the slot is U-shaped.

6. The antenna assembly according to claim 2 , further comprising:
a first stub and a second stub that are electrically connected to the first grounding part, wherein the first stub is opposite to the first end of the first feed line, wherein the first end of the first feed line feeds the first stub, and wherein the second end of the first feed line is electrically connected to the second stub.

7. The antenna assembly according to claim 6 , wherein
the first stub and the second stub are respectively located on two different sides of a symmetrical plane of the slot, and wherein the first stub and the second stub form a symmetrical structure with respect to the symmetrical plane.

8. The antenna assembly according to claim 7 , wherein
the first stub comprises a first stub arm and a second stub arm, wherein the second stub arm is connected to the first grounding part by using the first stub arm, and wherein a length direction of the second stub arm is perpendicular to the symmetrical plane of the slot; and
the second stub comprises a third stub arm and a fourth stub arm, wherein the fourth stub arm is connected to the first grounding part by using the third stub arm, and wherein a length direction of the fourth stub arm is perpendicular to the symmetrical plane of the slot.

9. The antenna assembly according to claim 7 , wherein
the first stub is electrically connected to the first grounding part through a first stub inductor, and the second stub is electrically connected to the first grounding part through a second stub inductor.

10. The antenna assembly according to claim 1 , wherein at least one of:
a first matching inductor is connected in series on the first feed line; and
a second matching inductor is connected in series on the second feed line.

11. The antenna assembly according to claim 1 , further comprising at least one of:
a first matching capacitor, wherein two ends of the first matching capacitor are respectively electrically connected to the first end of the first feed line and the first grounding part; and
a second matching capacitor, wherein two ends of the second matching capacitor are respectively electrically connected to the first grounding part and the second grounding part.

12. A mobile terminal, comprising a radio frequency unit and an antenna assembly, wherein the antenna assembly comprises:
a first grounding part and a second grounding part, wherein a slot is formed between the first grounding part and the second grounding part, and wherein the first grounding part and the second grounding part are separated by the slot;
a first feed line, wherein at least a part of the first feed line is located in the slot or is located in a directly opposite position of the slot, wherein a first end of the first feed line is configured to feed the first grounding part, and wherein a second end of the first feed line is electrically connected to the first grounding part; and
a second feed line, wherein at least a part of the second feed line is located in the slot or is located in a directly opposite position of the slot, wherein a first end of the second feed line is configured to feed one of the first grounding part and the second grounding part, and wherein a second end of the second feed line is electrically connected to the other of the first grounding part and the second grounding part;
wherein a first end of a first feed line of the antenna assembly is electrically connected to the radio frequency unit, a first end of a second feed line of the antenna assembly is electrically connected to the radio frequency unit, and the first feed line and the second feed line are insulated and crossed.

13. The antenna assembly according to claim 12 , wherein
the slot is a symmetrical structure, and an extension path of the slot is U-shaped.

14. The antenna assembly according to claim 13 , wherein
the first feed line and the second feed line are crossed in a symmetrical plane of the slot.

15. The antenna assembly according to claim 14 , wherein
a part that is of the second feed line and that is located in the slot or is located in the directly opposite position of the slot, is located in the symmetrical plane of the slot and extends along the symmetrical plane of the slot.

16. The antenna assembly according to claim 13 , further comprising:
a first stub and a second stub that are electrically connected to the first grounding part, wherein the first stub is opposite to the first end of the first feed line, wherein the first end of the first feed line feeds the first stub, and wherein the second end of the first feed line is electrically connected to the second stub.

17. The antenna assembly according to claim 16 , wherein
the first stub and the second stub are respectively located on two different sides of a symmetrical plane of the slot, and wherein the first stub and the second stub form a symmetrical structure with respect to the symmetrical plane.

18. The antenna assembly according to claim 17 , wherein
the first stub comprises a first stub arm and a second stub arm, the second stub arm is connected to the first grounding part by using the first stub arm, and a length direction of the second stub arm is perpendicular to the symmetrical plane of the slot; and
the second stub comprises a third stub arm and a fourth stub arm, the fourth stub arm is connected to the first grounding part by using the third stub arm, and a length direction of the fourth stub arm is perpendicular to the symmetrical plane of the slot.

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhou Yuan
• Yu Dong
• Wang Hanyang
• Hou Meng

Classifications

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q1/22

  by structural association with other equipment or articles · CPC title

• H01Q5/10

  Resonant antennas · CPC title

• H01Q5/335

  at the feed, e.g. for impedance matching · CPC title