ANTENNA STRUCTURE

• US 20180090840A1
• Filed: 09/26/2017
• Published: 03/29/2018
• Est. Priority Date: 09/29/2016
• Status: Active Grant

• Current Assignee: Compal Electronics Incorporated
• Original Assignee: Compal Electronics Incorporated
• Inventors: Yu, Yen-Hao, Lee, Li-Chun, Lai, Jui-Hung, Liu, Shih-Chia, Chen, Jhin-Ciang, Wu, Chao-Lin
• Granted Patent: US 10,454,167 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/2266 disposed inside the computer
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/52 Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure absorbing means H01Q17/00
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 13/106 Microstrip slot antennas patch antenna elements H01Q9/0407
• CPC Class Codes: H01Q 21/064 using horn or slot aerials slotted waveguides arrays H01Q21/005
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 5/50 Feeding or matching arrangements for broad-band or multi-band operation
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• CPC Class Codes: H01Q 9/0457 electromagnetically coupled to the feed line
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols

Abstract

An antenna structure includes a substrate, a metal element, and a feeding element. The metal element has an open slot. The open slot forms a first resonant path. The substrate is disposed on the metal element. The feeding element is disposed on the substrate, and the metal element and the feeding element are respectively disposed on two opposite sides of the substrate. The feeding element includes a feeding end and a shorting end electrically connected to the metal element. An orthogonal projection of the feeding element on the metal element is partially overlapped with the open slot. The feeding element forms a second resonant path extending from the feeding end to the shorting end. The antenna structure operates in a first band through the first resonant path and operates in a second band through the second resonant path.

Claims

1. An antenna structure comprising:

a metal element having an open slot, the open slot forming a first resonant path;

a substrate disposed on the metal element; and

a feeding element disposed on the substrate, wherein the metal element and the feeding element are respectively disposed on two opposite sides of the substrate, and the feeding element comprises;

a feeding end; and

a shorting end electrically connected to the metal element, wherein an orthogonal projection of the feeding element on the metal element is partially overlapped with the open slot, and the feeding element forms a second resonant path extending from the feeding end to the shorting end,

wherein the antenna structure operates in a first band through the first resonant path and operates in a second band through the second resonant path.

2. The antenna structure according to claim 1, wherein the antenna structure further comprises a connection element, and the shorting end of the feeding element is electrically connected to the metal element through the connection element.

3. The antenna structure according to claim 1, wherein a length of the first resonant path is a quarter of a wavelength of the first band.

4. The antenna structure according to claim 1, wherein a length of the second resonant path is a half of a wavelength of the second band.

5. The antenna structure according to claim 1, wherein the open slot has a closed end, an open end, and a first edge, the first edge is located between the closed end and the open end, an orthogonal projection of the feeding end of the feeding element on the metal element is close to the closed end, and an orthogonal projection of the shorting end of the feeding element on the metal element is close to the first edge.

6. The antenna structure according to claim 5, wherein the feeding element comprises:

a first segment comprising the feeding end;

a second segment comprising the shorting end; and

a third segment electrically connected between the first segment and the second segment, the first segment, the third segment, and the second segment forming the second resonant path.

7. The antenna structure according to claim 6, wherein orthogonal projections of the first segment and the second segment on the metal element are partially overlapped with the first edge of the open slot, and an orthogonal projection of the third segment on the metal element is located in the open slot.

8. The antenna structure according to claim 7, wherein the feeding element further comprises:

a first extended segment, wherein a first end of the first extended segment is electrically connected to a first end of the third segment, and an orthogonal projection of a second end of the first extended segment on the metal element extends toward the closed end of the open slot.

9. The antenna structure according to claim 8, wherein the feeding element further comprises:

a second extended segment, wherein a first end of the second extended segment is electrically connected to a second end of the third segment, and an orthogonal projection of a second end of the second extended segment on the metal element extends toward the open end of the open slot.

10. The antenna structure according to claim 7, wherein the open slot further has a second edge opposite to the first edge, and the feeding element further comprises:

an extended segment, wherein a first end of the extended segment is electrically connected to the third segment, and an orthogonal projection of a second end of the extended segment on the metal element extends toward the second edge of the open slot.

11. The antenna structure according to claim 6, wherein orthogonal projections of the first segment, the second segment, and the third segment on the metal element are located in the open slot.

12. The antenna structure according to claim 6, wherein the open slot further has a second edge opposite to the first edge, an orthogonal projection of the first segment on the metal element is partially overlapped with the first edge and the second edge, an orthogonal projection of the second segment on the metal element is partially overlapped with the first edge and the second edge, and an orthogonal projection of the third segment on the metal element is not located in the open slot.

13. The antenna structure according to claim 6, wherein orthogonal projections of the first segment and the second segment on the metal element are partially overlapped with the closed end of the open slot, and an orthogonal projection of the third segment on the metal element is located in the open slot.

14. The antenna structure according to claim 6, wherein the substrate comprises a first surface and a second surface opposite to each other, the first surface is disposed on the metal element, and the first segment, the third segment, and the second segment are disposed on the second surface.

15. The antenna structure according to claim 14, wherein the antenna structure is applicable to an electronic device, and the electronic device comprises:

a hinge structure comprising a metal housing, wherein the metal housing is configured to constitute the metal element of the antenna structure, and the open slot is disposed on the metal housing; and

a first body and a second body, rotating relatively to each other through the hinge structure.

16. The antenna structure according to claim 15, wherein the hinge structure further comprises:

a pivot base;

a first rotating shaft pivoted to the pivot base and fixed to the first body; and

a second rotating shaft pivoted to the pivot base and fixed to the second body.

17. The antenna structure according to claim 15, wherein the hinge structure further comprises a hinge assembly, and the hinge assembly comprises:

a first bracket fixed to the first body;

a second bracket fixed to the second body; and

a connection bracket pivoted to the first bracket and the second bracket.

18. The antenna structure according to claim 6, wherein the substrate comprises a first surface, a second surface, and a third surface, the first surface and the second surface are opposite to each other, the third surface is adjacent to the first surface and the second surface, the first surface is disposed on the metal element, the first segment and the second segment are disposed on the second surface, and the third segment is disposed on the third surface.

19. The antenna structure according to claim 18, wherein the antenna structure is applicable to an electronic device, and the electronic device comprises:

a hinge structure comprising a metal housing; and

a first body and a second body, rotating relatively to each other through the hinge structure, the second body comprising a metal back cover, wherein the metal housing and the metal back cover are configured to constitute the metal element of the antenna structure.

20. The antenna structure according to claim 6, wherein the substrate comprises a first surface and a second surface opposite to each other, the metal element is disposed on the first surface, and the first segment, the third segment, and the second segment are disposed on the second surface.

21. The antenna structure according to claim 20, wherein the antenna structure is applicable to an electronic device, and the antenna structure is attached to an insulating structure of the electronic device.