# US 12,183,964 B2 · Mobile device with high radiation efficiency

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- Number: US 12,183,964 B2
- Document ID: US12183964B2
- Status: Granted
- Kind: B2
- Application number: 17/934,606
- Filed: 2022-09-23
- Published: 2023-11-30
- Granted: 2024-12-31
- Earliest claimed: 2022-05-25
- Assignees: Acer Incorporated
- Applicants: Acer Incorporated
- Inventors: Kun-Sheng Chang; Ching-Chi Lin
- Web page: https://patentgrep.com/patent/US12183964B2

## CPC

- H01Q 1/2266: {disposed inside the computer}
- H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
- H01Q 1/22: by structural association with other equipment or articles
- H01Q 1/48: Earthing means; Earth screens; Counterpoises
- H01Q 5/307: Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q 5/385: Two or more parasitic elements
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A mobile device with high radiation efficiency includes a ground element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, and a dielectric substrate. The first radiation element has a feeding point. The second radiation element is coupled to the first radiation element. The first radiation element is coupled through the third radiation element to the ground element. The fourth radiation element is coupled between the first radiation element and the third radiation element. The first radiation element, the second radiation element, the third radiation element, and the fourth radiation element are disposed on the dielectric substrate. An antenna structure is formed by the first radiation element, the second radiation element, the third radiation element, and the fourth radiation element.

## Claims

### Claim 1

A mobile device with high radiation efficiency, comprising:
a ground element;
a first radiation element, having a feeding point;
a second radiation element, coupled to the first radiation element;
a third radiation element, wherein the first radiation element is coupled through the third radiation element to the ground element;
a fourth radiation element, coupled between the first radiation element and the third radiation element; and
a dielectric substrate, wherein the first radiation element, the second radiation element, the third radiation element, and the fourth radiation element are disposed on the dielectric substrate;
wherein an antenna structure is formed by the first radiation element, the second radiation element, the third radiation element, and the fourth radiation element;
wherein the fourth radiation element directly touches both of the first radiation element and the third radiation element;
wherein the mobile device is a convertible notebook computer comprising an upper cover housing, a display frame, a keyboard frame, a base housing, and a support and rotating arm;
wherein when the convertible notebook computer operates in a tablet mode, the antenna structure is adjacent to a plurality of heat vents of the base housing;
wherein a distance between the antenna structure and the heat vents of the base housing is longer than or equal to 2 mm.

### Claim 2 (depends on 1)

The mobile device as claimed in claim 1, wherein a combination of the first radiation element and the third radiation element substantially has an inverted U-shape.

### Claim 3 (depends on 1)

The mobile device as claimed in claim 1, wherein the second radiation element substantially has a straight-line shape.

### Claim 4 (depends on 1)

The mobile device as claimed in claim 1, wherein the fourth radiation element substantially has a rectangular shape.

### Claim 5 (depends on 1)

The mobile device as claimed in claim 1, wherein the antenna structure covers a first frequency band and a second frequency band.

### Claim 6 (depends on 5)

The mobile device as claimed in claim 5, wherein the first frequency band is from 2400 MHz to 2500 MHz, and the second frequency band is from 5150 MHz to 5850 MHz.

### Claim 7 (depends on 5)

The mobile device as claimed in claim 5, wherein a total length of the first radiation element and the second radiation element is substantially equal to 0.25 wavelength of the first frequency band.

### Claim 8 (depends on 5)

The mobile device as claimed in claim 5, wherein a total length of the first radiation element and the second radiation element is substantially equal to 0.5 wavelength of the second frequency band.

### Claim 9 (depends on 5)

The mobile device as claimed in claim 5, wherein a total length of the first radiation element and the third radiation element is substantially equal to 0.5 wavelength of the first frequency band.

### Claim 10 (depends on 5)

The mobile device as claimed in claim 5, wherein a length of the fourth radiation element is substantially equal to 0.5 wavelength of the second frequency band.

### Claim 11 (depends on 1)

The mobile device as claimed in claim 1, wherein a width of the fourth radiation element is from 6 mm to 8 mm.

### Claim 12 (depends on 1)

The mobile device as claimed in claim 1, wherein the convertible notebook computer operates in different modes by using the support and rotating arm.

### Claim 13 (depends on 1)

The mobile device as claimed in claim 1, wherein the antenna structure is disposed on the support and rotating arm.