MOBILE DEVICE

• US 20170309993A1
• Filed: 06/09/2016
• Published: 10/26/2017
• Est. Priority Date: 04/22/2016
• Status: Active Grant

• Current Assignee: Quanta Computer
• Original Assignee: Quanta Computer
• Inventors: TU, Shu-Yang, LIN, Chun-I, LIN, Hui
• Granted Patent: US 9,843,092 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03

Abstract

A mobile device includes a metal cavity, a dielectric substrate, and a feeding element. A slot is formed on a side wall of the metal cavity. The dielectric substrate is disposed in the metal cavity. The feeding element is disposed on the dielectric substrate, and is electrically connected to a signal source. A slot antenna structure is formed by the metal cavity, the dielectric substrate, and the feeding element.

Claims

1. A mobile device, comprising:

a metal cavity, wherein a slot is formed on a side wall of the metal cavity;

a dielectric substrate, disposed in the metal cavity; and

a feeding element, disposed on the dielectric substrate, and electrically connected to a signal source;

wherein a slot antenna structure is formed by the metal cavity, the dielectric substrate, and the feeding element.

2. The mobile device as claimed in claim 1, wherein the dielectric substrate has an upper surface and a lower surface, the upper surface of the dielectric substrate is attached to the side wall, and the feeding element is disposed on the lower surface of the dielectric substrate.

3. The mobile device as claimed in claim 1, wherein the metal cavity is a hollow cuboid.

4. The mobile device as claimed in claim 1, wherein the slot has a straight-line shape.

5. The mobile device as claimed in claim 1, wherein the feeding element comprises a first feeding branch and a second feeding branch, and both the first feeding branch and the second feeding branch extend across the slot.

6. The mobile device as claimed in claim 1, wherein the slot antenna structure is excited to generate a first frequency band and a second frequency band, the first frequency band is from 2400 MHz to 2484 MHz, and the second frequency band is from 5150 MHz to 5850 MHz.

7. The mobile device as claimed in claim 6, wherein a length of the metal cavity is from 0.4 to 0.6 wavelength of the first frequency band.

8. The mobile device as claimed in claim 6, wherein a width of the metal cavity is from 0.05 to 0.15 wavelength of the first frequency band.

9. The mobile device as claimed in claim 1, wherein at least one small opening is further formed on a top plate of the metal cavity, and the top plate is perpendicular to the side wall.

10. The mobile device as claimed in claim 1, wherein the mobile device is a convertible notebook computer which comprises:

an upper cover, comprising a display device;

a lower cover, comprising a keyboard;

a hinge element, electrically connected between the upper cover and the lower cover, such that the convertible notebook computer operates in a notebook mode, a tent mode, or a tablet mode, wherein the slot antenna structure is adjacent to the hinge element and is between the upper cover and the lower cover.