ANTENNA STRUCTURE

• US 20200136235A1
• Filed: 10/16/2019
• Published: 04/30/2020
• Est. Priority Date: 10/24/2018
• Status: Active Grant

• Current Assignee: Mobile Drive Netherlands BV
• Original Assignee: Shenzhen Next Generation Communication Limited
• Inventors: CHEN, JIA, CHEN, KUO-CHENG, CHANG, JIAN-WEI, TANG, ZHEN-CHANG, JIANG, YI-LING, YE, WEI-YU, PENG, BO, WU, CHUN-SHENG
• Granted Patent: US 11,349,198 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 3/247 by switching different parts of a primary active element
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 9/0442 with particular tuning means
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence

Abstract

An antenna structure applied in a wireless communication device includes a metal frame. The wireless communication device includes at least one electronic component. The metal frame includes a substrate. The substrate includes an antenna. The antenna includes a feed portion and a gap. The feed portion spans the gap. The metal frame is spaced from the electronic component. A clearance is formed between the metal frame and the electronic component.

Claims

1. An antenna structure applied in a wireless communication device comprising an electronic component, the antenna structure comprising:

a metal frame;

wherein;

the metal frame comprises a substrate defining a gap;

the substrate comprises an antenna;

the antenna comprises a feed portion spanning over the gap;

the metal frame is spaced from the electronic component; and

a clearance is formed between the metal frame and the electronic component.

2. The antenna structure of claim 1, wherein the substrate is mounted on the electronic component and the metal frame.

3. The antenna structure of claim 1, wherein:

the substrate comprises a first surface and a second surface;

the first surface is opposite to the second surface;

the gap passes through the first surface and the second surface.

4. The antenna structure of claim 3 further comprising a switch, wherein:

two ends of the switch are respectively coupled to two sides of the substrate across the gap;

the switch selectively switches on and off to adjust a resonance frequency of the antenna structure.

5. The antenna structure of claim 4, wherein:

when the switch switches on, the gap is divided into two sections, and the length of the gap is shortened to a length of the section containing the feed portion;

when the switch switches off, the length of the gap is substantially unchanged.

6. The antenna structure of claim 5, wherein:

the feed portion is mounted on the first surface;

when the feed portion supplies an electric current, the electric current from the feed portion is coupled to the gap;

when the switch switches on, the length of the gap is shortened to excite a first resonance mode and generate a radiation signal in a first frequency band;

when the switch switches off, the length of the gap is substantially unchanged to excite a second resonance mode and generate a radiation signal in a second frequency band;

the second frequency band is lower than the first frequency band.

7. The antenna structure of claim 3, wherein:

the metal frame comprises a first side, a second side, and a third side;

the third side is coupled between the first side and the second side;

the first side is perpendicularly coupled to the third side;

the second side is perpendicularly coupled to the third side;

the first side is parallel to and spaced from the third side;

the third side faces an inner side of the metal frame.

8. The antenna structure of claim 7, wherein:

the first surface and the first side are arranged on a same plane;

the second surface faces away from the first side and faces the second surface.

9. The antenna structure of claim 7, wherein:

the first surface and the second side are arranged on a same plane;

the second surface faces the first surface away from the second side.

10. The antenna structure of claim 1, wherein the metal frame further comprises a slot to expand the clearance.

11. A wireless communication device comprising an antenna structure, a backplane, and a display screen, the antenna structure comprising:

a metal frame;

wherein;

the metal frame comprises a substrate defining a gap;

the substrate comprises an antenna;

the antenna comprises a feed portion spanning over the gap;

the metal frame is spaced from the electronic component; and

a clearance is formed between the metal frame and the electronic component.

12. The wireless communication device of claim 11, wherein the substrate is mounted on the electronic component and the metal frame.

13. The wireless communication device of claim 11, wherein:

the substrate comprises a first surface and a second surface;

the first surface is opposite to the second surface;

the gap passes through the first surface and the second surface.

14. The wireless communication device of claim 13, wherein:

two ends of the switch are respectively coupled to two sides of the substrate across the gap;

the switch selectively switches on and off to adjust a resonance frequency of the antenna structure.

15. The wireless communication device of claim 14, wherein:

switches off

when the switch switches on, the gap is divided into two sections, and the length of the gap is shortened to a length of the section containing the feed portion;

when the switch switches off, the length of the gap is substantially unchanged.

16. The wireless communication device of claim 15, wherein:

the feed portion is mounted on the first surface;

when the feed portion supplies an electric current, the electric current from the feed portion is coupled to the gap;

when the switch switches on, the length of the gap is shortened, to excite a first resonance mode and generate a radiation signal in a first frequency band;

when the switch switches off, the length of the gap is substantially unchanged to excite a second resonance mode and generate a radiation signal in a second frequency band;

the second frequency band is lower than the first frequency band.

17. The wireless communication device of claim 13, wherein:

the metal frame comprises a first side, a second side, and a third side;

the third side is coupled between the first side and the second side;

the first side is perpendicularly coupled to the third side;

the second side is perpendicularly coupled to the third side;

the first side is parallel to and spaced from the third side;

the third side faces an inner side of the metal frame.

18. The wireless communication device of claim 17, wherein:

the first surface and the first side are arranged on a same plane;

the second surface faces away from the first side and faces the second surface.

19. The wireless communication device of claim 17, wherein:

the first surface and the second side are arranged on a same plane;

the second surface faces the first surface away from the second side.

20. The wireless communication device of claim 11, wherein the metal frame further comprises a slot to expand the clearance.