Portable Communication Device

• US 20130135157A1
• Filed: 11/28/2011
• Published: 05/30/2013
• Est. Priority Date: 11/28/2011
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Chen, Kuo-Cheng, Tsou, Tun-Yuan, Teng, Pei-Ling, Chen, Yi-Chun, Chen, Hong-Lung
• Granted Patent: US 9,160,058 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/2266 disposed inside the computer
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• 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 3/24 varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
• 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 9/145 by varying the electrical length
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• CPC Class Codes: H04M 1/026 Details of the structure or mounting of specific components

Abstract

A portable communication device includes an appearance, a substrate and a switchable resonant antenna. The substrate is disposed in the appearance, and the substrate has a ground plane. The switchable resonant antenna comprises a first connection portion, a switching unit, a first metal element and a second metal element, where the first connection portion is electrically coupled between the ground plane and the switching unit, the switching unit is configured to electrically couple the first connection portion to the first metal element or the second metal element according to a control signal generated corresponding to a detecting result, in order to generate a first resonant mode.

Claims

1. A portable communication device, comprising:

an appearance;

a substrate disposed in the appearance, the substrate having a ground plane; and

a switchable resonant antenna comprising a first connection portion, a switching unit, a first metal element and a second metal element, the first connection portion electrically coupled between the ground plane and the switching unit, the switching unit for electrically coupling the first connection portion to the first metal element or the second metal element according to a control signal generated corresponding to a detected result, so as to generate a first resonant mode.

2. The portable communication device of claim 1, wherein the first metal element and the second metal element are portions of the appearance.

3. The portable communication device of claim 1, wherein a first resonant cavity is formed between the first metal element and the ground plane when the first connection portion is electronically coupled to the first metal element, and a second resonant cavity is formed between the second metal element and the ground plane when the first connection portion is electronically coupled to the second metal element.

4. The portable communication device of claim 3, wherein the appearance comprises a bezel, wherein a first gap is formed between one end of the bezel and the first metal element, and a second gap is formed between another end of the bezel and the second metal element.

5. The portable communication device of claim 4, wherein the bezel comprises metal or non-metal.

6. The portable communication device of claim 4, wherein the first gap and an electronic length of the first metal element are adjustable for controlling the first resonant mode generated by the first resonant cavity, and the second gap and an electronic length of the second metal element are adjustable for controlling the first resonant mode generated by the second resonant cavity.

7. The portable communication device of claim 1, wherein an effective electronic length of the first metal element is equal to an effective electronic length of the second metal element.

8. The portable communication device of claim 4, further comprising:

a first sensing unit disposed adjacent to the first gap for sensing whether an object is close to or touches the first metal element and accordingly generating a first sensing signal; and

a second sensing unit disposed adjacent to the second gap for sensing whether the object is close to or touches the second metal element and accordingly generating a second sensing signal.

9. The portable communication device of claim 8, further comprising:

a control unit electronically coupled to the first sensing unit, the second sensing unit and the switching unit for generating the control signal based on the sensing signals to control a switching state of the switching unit.

10. The portable communication device of claim 1, further comprising:

a planar inverted-F antenna comprising a feeding portion, a ground end, a second connection portion, a first radiating portion and a second radiating portion, the feeding portion and the ground end being electronically coupled to the substrate, the ground end being electronically coupled to the ground plane of the substrate, and the second connection portion being electronically coupled to the feeding portion, the ground end, the first radiating portion and the second radiating portion.

11. The portable communication device of claim 10, wherein the appearance comprises a housing, the first radiating portion is disposed on or inside the housing to generate a second resonant mode, and the second radiation portion is also disposed on or inside the housing to generate a third resonant mode.

12. The portable communication device of claim 1, further comprising at least one of a monopole antenna, a loop antenna, a slot antenna and an inverted-F antenna to generate resonant modes of required operating frequency bands.