Antenna and terminal device

Patent metadata

Field	Value
Publication number	US-11677150-B2
Application number	US-202016745437-A
Country	US
Kind code	B2
Filing date	Jan 17, 2020
Priority date	Sep 17, 2019
Publication date	Jun 13, 2023
Grant date	Jun 13, 2023

Abstract

An antenna includes a feed contact, a first antenna branch and a second antenna branch, wherein the first antenna branch and the second antenna branch are respectively electrically connected with the feed contact, forming electromagnetic coupling; the first antenna branch has a specified length for sending and receiving signals in a first frequency band; and the second antenna branch has a specified length for sending and receiving signals in a second frequency band. A terminal device including such an antenna can have improved appearance, improved effect of receiving communication signals in different frequency bands, reduced RF loss, and improved the utilization of the internal space.

First claim

The invention claimed is:

1. An antenna, comprising:
a feed contact, a first antenna branch, a second antenna branch, and a third antenna branch; wherein
the first antenna branch, the second antenna branch, and the third antenna branch are respectively electrically connected with the feed contact;
the first antenna branch has a first length for sending and receiving signals in a first frequency band;
the second antenna branch has a second length for sending and receiving signals in a second frequency band different from the first frequency band;
the third antenna branch has a third length for sending and receiving signals in a third frequency band different from the first and second frequency bands;
the first antenna branch, the second antenna branch, and the third antenna branch form electromagnetic coupling;
the first antenna branch, the second antenna branch, and the third antenna branch are integrally formed in an L-shape, such that the first antenna branch is formed as a first side of the L shape, the second antenna branch is formed as a second side of the L shape, and the third antenna branch is disposed at a corner of the L shape formed by the first antenna branch and the second antenna branch; and
at least one of the three frequency bands is for Wi-Fi signals and another of the three frequency bands is for sub 6 GHz signals.

2. The antenna of claim 1 , further comprising a first grounding point and a second grounding point;
the first antenna branch is grounded through the first grounding point; and
the second antenna branch is grounded through the second grounding point.

3. The antenna of claim 2 , wherein
the third antenna branch is grounded through the first grounding point.

4. The antenna of claim 1 , wherein
the first frequency band signal is Wi-Fi 2.4 GHz frequency band signal, the second frequency band signal is N78 frequency band signal which is a sub 6G communications band, and the third frequency band signal is Wi-Fi 5 GHz frequency band signal.

5. A terminal device, comprising a first antenna that is the antenna of claim 1 .

6. The terminal device of claim 5 , further comprising a second antenna; wherein
the first antenna is spaced from the second antenna with a specified distance.

7. The terminal device of claim 6 , wherein the second antenna is a Combo antenna.

8. The terminal device of claim 6 , wherein the first antenna is disposed at a non-grip area of the terminal device.

9. The terminal device of claim 8 , further comprising a rear camera Deco;
the non-grip area includes areas near two adjacent sides of the rear camera Deco;
the first antenna branch of the first antenna is spaced from one side of the two adjacent sides of the camera Deco with a first specified distance, the second antenna branch of the first antenna is spaced from the other side of the two adjacent sides of the camera Deco with a second specified distance, and the third antenna branch of the first antenna is disposed at a corner of the two adjacent sides.

10. The terminal device of claim 9 , further comprising a battery; and
the first antenna branch or the second antenna branch is disposed between the camera Deco and the battery.

11. The terminal device of claim 10 , further comprising a frame connected with the second antenna;
the first antenna branch is disposed between the camera Deco and the battery; and
the second antenna branch is disposed between the camera Deco and the frame.

12. The terminal device of claim 5 , wherein the antenna further includes a first grounding point and a second grounding point;
the first antenna branch is grounded through the first grounding point; and
the second antenna branch is grounded through the second grounding point.

13. The terminal device of claim 12 , wherein the third antenna branch is grounded through the first grounding point.

14. The terminal device of claim 5 , wherein the first frequency band signal is Wi-Fi 2.4 GHz frequency band signal, the second frequency band signal is N78 frequency band signal which is a sub 6G communications band, and the third frequency band signal is Wi-Fi 5 GHz frequency band signal.

15. A mobile terminal, comprising a first antenna that is the antenna of claim 1 , a second antenna, and a frame; wherein the first antenna is spaced from the second antenna with a specified distance, and there is no hole on the frame configured for the first antenna or the second antenna.

16. The mobile terminal of claim 15 , further comprising a front display screen, a rear camera, and a rear camera Deco, wherein the first antenna is disposed adjacent to the rear camera Deco, with specified distances between the first and second antenna branches and two adjacent sides of the camera Deco so as to avoid signal interference between the first antenna and the camera Deco.

Assignees

• Beijing Xiaomi Mobile Software Co Ltd

Inventors

• Zhou Mingming
• Li Min
• Su Yu Chuan

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

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q9/42

  with folded element, the folded parts being spaced apart a small fraction of the operating wavelength · CPC title

• H01Q5/371 Primary

  Branching current paths · CPC title