Mobile device and antenna structure

Patent metadata

Field	Value
Publication number	US-10910698-B2
Application number	US-201916669732-A
Country	US
Kind code	B2
Filing date	Oct 31, 2019
Priority date	Feb 22, 2019
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A mobile device includes a metal mechanism element, a dielectric substrate, a holder, a feeding radiation element, a ground plane, a shorting element, a circuit element, a first parasitic radiation element, a second parasitic radiation element, and an additional radiation element. The metal mechanism element has a slot. The ground plane and the shorting element are respectively coupled to the metal mechanism element. The circuit element is coupled between the shorting element and the ground plane. The first parasitic radiation element and the second parasitic radiation element are respectively coupled to the ground plane. The additional radiation element is adjacent to the feeding radiation element or is coupled to the feeding radiation element. An antenna structure is formed by the feeding radiation element, the circuit element, the first parasitic radiation element, the second parasitic radiation element, the additional radiation element, and the slot of the metal mechanism element.

First claim

What is claimed is:

1. A mobile device, comprising:
a metal mechanism element, having a slot, wherein the slot has a first closed end and a second closed end;
a dielectric substrate, having a first surface and a second surface opposite to each other;
a holder, disposed on the metal mechanism element, and configured to support the dielectric substrate;
a feeding radiation element, having a feeding point, and covering at least a portion of the slot;
a ground plane, coupled to the metal mechanism element;
a shorting element, coupled to the metal mechanism element;
a circuit element, coupled between the shorting element and a first grounding point on the ground plane, wherein the feeding radiation element, the ground plane, the shorting element, and the circuit element are disposed on the second surface of the dielectric substrate;
a first parasitic radiation element, coupled to a second grounding point on the ground plane;
a second parasitic radiation element, coupled to a third grounding point on the ground plane; and
an additional radiation element, disposed adjacent to or coupled to the feeding radiation element, wherein the first parasitic radiation element, the second parasitic radiation element, and the additional radiation element are disposed on the first surface of the dielectric substrate;
wherein an antenna structure is formed by the feeding radiation element, the radiation element, the additional radiation element, and the slot of the metal mechanism element.

2. The mobile device as claimed in claim 1 , wherein each of the ground plane and the shorting element is a ground copper foil extending from the metal mechanism element onto the second surface of the dielectric substrate.

3. The mobile device as claimed in claim 1 , wherein the feeding radiation element substantially has a geometric shape.

4. The mobile device as claimed in claim 1 , wherein the slot has a first side and a second side opposite to each other, and the feeding radiation element extends across at least the first side of the slot.

5. The mobile device as claimed in claim 1 , wherein the feeding radiation element has a specific side away from the feeding point, and the specific side is substantially aligned with at least a side of the additional radiation element.

6. The mobile device as claimed in claim 1 , further comprising:
a first conductive via element, penetrating the dielectric substrate, wherein the first parasitic radiation element is coupled through the first conductive via element to the second grounding point.

7. The mobile device as claimed in claim 6 , further comprising:
a second conductive via element, penetrating the dielectric substrate, wherein the second parasitic radiation element is coupled through the second 4 conductive via element to the third grounding point.

8. The mobile device as claimed in claim 1 , wherein at least one of the first parasitic radiation element and the second parasitic radiation element substantially has an L-shape.

9. The mobile device as claimed in claim 1 , wherein the second parasitic radiation element further comprises a first widening portion, and the first widening portion covers at least a portion of the slot.

10. The mobile device as claimed in claim 9 , wherein the additional radiation element further comprises a second widening portion, the second widening portion has a vertical projection on the second surface of the dielectric substrate, and the vertical projection at least partially overlaps the feeding radiation element.

11. The mobile device as claimed in claim 1 , wherein at least a portion of the additional radiation element substantially has a straight-line shape substantially parallel to the slot.

12. The mobile device as claimed in claim 1 , wherein the additional radiation element is floating and does not directly touch the feeding radiation element.

13. The mobile device as claimed in claim 1 , wherein the antenna structure covers a first frequency band, a second frequency band, a third frequency band, a fourth frequency band, and a fifth frequency band, and wherein the first frequency band is from 699 MHz to 960 MHz, the second frequency band is from 1710 MHz to 2170 MHz, the third frequency band is from 2200 MHz to 2690 MHz, the fourth frequency band is from 3400 MHz to 4300 MHz, and the fifth frequency band is from 5150 MHz to 5925 MHz.

14. The mobile device as claimed in claim 13 , wherein a length of the slot is shorter than 0.48 wavelength of the first frequency band.

15. The mobile device as claimed in claim 13 , wherein a length of the first parasitic radiation element is substantially equal to 0.25 wavelength of the second frequency band.

16. The mobile device as claimed in claim 13 , wherein a length of the second parasitic radiation element is substantially equal to 0.25 wavelength of the second frequency band.

17. The mobile device as claimed in claim 13 , wherein a length of the additional radiation element is substantially equal to 0.25 wavelength of the third frequency band.

18. The mobile device as claimed in claim 1 , wherein the circuit element is a resistor, an inductor, a capacitor, a switch element, or a combination thereof.

19. The mobile device as claimed in claim 1 , further comprising:
an auxiliary radiation element, coupled to the additional radiation element, and disposed on the first surface of the dielectric substrate, wherein the auxiliary radiation element substantially has a straight-line shape.

20. An antenna structure, comprising:
a metal mechanism element, having a slot, wherein the slot has a first closed end and a second closed end;
a dielectric substrate, having a first surface and a second surface opposite to each other;
a holder, disposed on the metal mechanism element, and configured to support the dielectric substrate;
a feeding radiation element, having a feeding point, and covering at least a portion of the slot;
a ground plane, coupled to the metal mechanism element;
a shorting element, coupled to the metal mechanism element;
a circuit element, coupled between the shorting element and a first grounding ground plane, the shorting element, and the circuit element are disposed on the second surface of the dielectric substrate;
a first parasitic radiation element, coupled to a second grounding point on the ground plane;
a second parasitic radiation element, coupled to a third grounding point on the ground plane; and
an additional radiation element, disposed adjacent to or coupled to the feeding radiation element, wherein the first parasitic radiation element, the second parasitic radiation element, and the additional radiation element are disposed on the first surface of the dielectric substrate.

Assignees

• Wistron Neweb Corp

Inventors

• Wei Shih-Chiang
• Yang Cheng-Da
• Li Kuan-Hung
• Yeh Shu-Yun

Classifications

• H01Q5/357

  using a single feed point · CPC title

• H01Q1/48 Primary

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q13/10

  Resonant slot antennas · CPC title

• H01Q1/244 Primary

  extendable from a housing along a given path · CPC title

• H01Q5/385

  Two or more parasitic elements · CPC title