Antenna structure and electronic device

Patent metadata

Field	Value
Publication number	US-12322875-B2
Application number	US-202118043213-A
Country	US
Kind code	B2
Filing date	Jul 21, 2021
Priority date	Aug 28, 2020
Publication date	Jun 3, 2025
Grant date	Jun 3, 2025

Abstract

An antenna structure includes a first radiator, a first feed unit, and a second feed unit. The first radiator includes a first feed point and a second feed point. The first feed unit feeds the antenna structure at the first feed point, and the second feed unit feeds the antenna structure at the second feed point. The first feed point is disposed in a central region. The second feed point is disposed between the central region and an end of the first radiator.

First claim

What is claimed is:

1. An antenna structure comprising:
a radiator comprising:
a central region:
an end;
a first feed point disposed in the central region; and
a second feed point disposed between the central region and the end;

a first feed unit configured to feed the antenna structure at the first feed point,
a second feed unit configured to feed the antenna structure at the second feed point,
wherein the antenna structure is configured to generate a first resonance when the first feed unit feeds the antenna structure,
wherein distances between all points in the central region and a center of the radiator are less than one sixteenth of a first wavelength, and
wherein the first wavelength corresponds to the first resonance.

2. The antenna structure of claim 1 , wherein the antenna structure is configured to generate a second resonance when the first feed unit feeds the antenna structure, wherein a distance between the second feed point and the end is between three sixteenths of a second wavelength and five sixteenths of the second wavelength, wherein the second wavelength corresponds to the second resonance, and wherein a second frequency of a second resonance point of the second resonance is greater than a first frequency of a first resonance point of the first resonance.

3. The antenna structure of claim 2 , wherein the antenna structure is further configured to generate a third resonance and a fourth resonance when the second feed unit feeds the antenna structure, and wherein a fourth frequency of a fourth resonance point of the fourth resonance is greater than a third frequency of a third resonance point of the third resonance.

4. The antenna structure of claim 3 , wherein the first resonance and the third resonance correspond to a first operating frequency band of the antenna structure, and wherein the second resonance and the fourth resonance correspond to a second operating frequency band of the antenna structure.

5. The antenna structure of claim 4 , wherein the first operating frequency band covers 2402 megahertz (MHz) to 2480 MHz in WI-FI or BLUETOOTH, and wherein the second operating frequency band covers 5 gigahertz (GHz) in WI-FI.

6. The antenna structure of claim 1 , wherein a length of the radiator is half of the first wavelength.

7. The antenna structure of claim 1 , wherein the antenna structure is further configured to:
generate a first pattern when the first feed unit feeds the antenna structure at the first feed point; and
generate a second pattern when the second feed unit feeds the antenna structure at the second feed point,
wherein the first pattern and the second pattern are complementary.

8. The antenna structure of claim 1 , wherein the antenna structure is further configured to generate a second resonance when the first feed unit feeds the antenna structure, wherein a distance between the first feed point and the second feed point is between three eighths of a second wavelength and five eighths of the second wavelength, wherein the second wavelength corresponds to the second resonance and wherein a second frequency of a second resonance point of the second resonance is greater than a first frequency of a first resonance point of the first resonance.

9. An electronic device comprising:
an antenna structure comprising:
a radiator comprising:
a center;
a central region, wherein distances between all points in the central region and the center are less than one sixteenth of a first wavelength;
an end;
a first feed point disposed in the central region; and
a second feed point disposed between the central region and the end;

a first feed unit configured to feed the antenna structure at the first feed point; and
a second feed unit configured to feed the antenna structure at the second feed point,
wherein the antenna structure is configured to generate a first resonance when the first feed unit feeds the antenna structure, and
wherein the first wavelength corresponds to the first resonance.

10. The electronic device of claim 9 , wherein the antenna structure is further configured to generate a second resonance when the first feed unit feeds the antenna structure, wherein a distance between the second feed point and the end is between three sixteenths of a second wavelength and five sixteenths of the second wavelength, wherein the second wavelength corresponds to the second resonance, and wherein a second frequency of a second resonance point of the second resonance is greater than a first frequency of a first resonance point of the first resonance.

11. The electronic device of claim 10 , wherein the antenna structure is further configured to generate a third resonance and a fourth resonance when the second feed unit feeds the antenna structure, and wherein a fourth frequency of a fourth resonance point of the fourth resonance is greater than a third frequency of a third resonance point of the third resonance.

12. The electronic device of claim 11 , wherein the first resonance and the third resonance correspond to a first operating frequency band of the antenna structure, and wherein the second resonance and the fourth resonance correspond to a second operating frequency band of the antenna structure.

13. The electronic device of claim 9 , wherein the antenna structure is configured to:
generate a first pattern when the first feed unit is feeding the antenna structure at the first feed point; and
generate a second pattern when the second feed unit is feeding the antenna structure at the second feed point and,
wherein the first pattern and the second pattern are complementary.

14. The electronic device of claim 9 , wherein the antenna structure is further configured to generate a second resonance when the first feed unit feeds the antenna structure, wherein a distance between the first feed point and the second feed point is between three eighths of a second wavelength and five eighths of the second wavelength, wherein the second wavelength corresponds to the second resonance, and wherein a second frequency of a second resonance point of the second resonance is greater than a first frequency of a first resonance point of the first resonance.

15. The electronic device of claim 9 , further comprising an antenna support, wherein the antenna support comprises a surface, and wherein the first radiator is disposed on the surface.

16. The electronic device of claim 9 , further comprising a rear cover, wherein the rear cover comprises a surface, and wherein the first radiator is disposed on the surface.

17. The electronic device of claim 9 , wherein the electronic device is an earphone.

Assignees

• Huawei Tech Co Ltd

Inventors

• Lan Yao
• Wang Hanyang
• Long Zhongying

Classifications

• H01Q1/273

  Adaptation for carrying or wearing by persons or animals · CPC title

• H01Q5/15 Primary

  for operation of centre-fed antennas comprising one or more collinear, substantially straight or elongated active elements · CPC title

• H01Q21/24

  Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} · CPC title

• H01Q1/2291

  used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W) · CPC title

• H01Q9/16

  with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole (H01Q9/44 takes precedence) · CPC title