Mobile device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2016285167-A1
Application number	US-201514666450-A
Country	US
Kind code	A1
Filing date	Mar 24, 2015
Priority date	Mar 24, 2015
Publication date	Sep 29, 2016
Grant date	—

Abstract

A mobile device includes a ground plane, a ground branch, a supporting element, and a circuit element. The ground branch is coupled to the ground plane. A slot is formed between the ground branch and the ground plane. The supporting element is positioned above the ground branch, and a vertical projection of the supporting element at least partially overlaps the ground branch. The circuit element is coupled between the ground branch and the ground plane. A first antenna structure is formed by the ground branch. The first antenna structure is excited by a first signal source. A second antenna structure is disposed on the supporting element. The second antenna structure is excited by a second signal source.

First claim

What is claimed is:

1 . A mobile device, comprising:
a ground plane; a ground branch, coupled to the ground plane, wherein a slot is formed between the ground branch and the ground plane; a supporting element, disposed above the ground branch, wherein a vertical projection of the supporting element at least partially overlaps the ground branch; and a circuit element, coupled between the ground branch and the ground plane; wherein a first antenna structure is formed by the ground branch and excited by a first signal source; wherein a second antenna structure is disposed on the supporting element and excited by a second signal source.

2 . The mobile device as claimed in claim 1 , wherein the ground branch substantially has an L-shape.

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

4 . The mobile device as claimed in claim 1 , wherein the slot has an open end and a closed end.

5 . The mobile device as claimed in claim 1 , wherein the supporting element is made of a nonconductive material.

6 . The mobile device as claimed in claim 1 , wherein the whole vertical projection of the supporting element is inside the ground branch.

7 . The mobile device as claimed in claim 1 , further comprising:
a first matching circuit, wherein the first signal source is coupled through the first matching circuit to the first antenna structure; and a second matching circuit, wherein the second signal source is coupled through the second matching circuit to the second antenna structure.

8 . The mobile device as claimed in claim 1 , wherein the circuit element is disposed inside the slot.

9 . The mobile device as claimed in claim 1 , wherein the circuit element is a variable capacitor.

10 . The mobile device as claimed in claim 9 , wherein a capacitance of the variable capacitor is from about 0.5 pF to about 3.3 pF.

11 . The mobile device as claimed in claim 1 , wherein the first antenna structure is used as a reference ground plane of the second antenna structure.

12 . The mobile device as claimed in claim 1 , wherein the second antenna structure comprises:
a first radiation element, coupled to the second signal source; and a second radiation element, coupled to the ground branch.

13 . The mobile device as claimed in claim 12 , wherein the second antenna structure further comprises:
a first connection element, wherein the first radiation element is coupled through the first connection element to the second signal source; and a second connection element, wherein the second radiation element is coupled through the second connection element to the ground branch.

14 . The mobile device as claimed in claim 13 , wherein the first connection element and the second connection element are both substantially perpendicular to the ground branch and the supporting element.

15 . The mobile device as claimed in claim 1 , wherein the first antenna structure operates in a low-frequency band, and the second antenna structure operates in a medium-frequency band and a high-frequency band.

16 . The mobile device as claimed in claim 15 , wherein the low-frequency band is from about 698 MHz to about 960 MHz.

17 . The mobile device as claimed in claim 15 , wherein the medium-frequency band is from about 1710 MHz to about 2170 MHz, and the high-frequency band is from 2300 MHz to 2700 MHz.

18 . The mobile device as claimed in claim 1 , further comprising:
one or more electronic components, disposed on the ground branch.

19 . The mobile device as claimed in claim 18 , wherein the electronic components comprise a speaker, a camera, and/or a headphone jack.

20 . A method for manufacturing a mobile device, comprising the steps of:
providing a ground plane and a ground branch, wherein the ground branch is coupled to the ground plane, and a slot is formed between the ground branch and the ground plane; disposing a supporting element above the ground branch, wherein a vertical projection of the supporting element at least partially overlaps the ground branch; coupling a circuit element between the ground branch and the ground plane; using the ground branch to form a first antenna structure, wherein the first antenna structure is excited by a first signal source; and disposing a second antenna structure on the supporting element, wherein the second antenna structure is excited by a second signal source.

21 . A mobile device, comprising:
a ground plane; a ground branch, coupled to the ground plane, wherein a slot is formed between the ground branch and the ground plane; a circuit element, coupled between the ground branch and the ground plane; and a switch element, coupled between the ground branch and the ground plane; wherein a first antenna structure is formed by the ground branch and excited by a first signal source; wherein a second antenna structure is coupled to the ground branch and excited by a second signal source.

22 . The mobile device as claimed in claim 21 , wherein the first antenna structure is used as a reference ground plane of the second antenna structure.

23 . The mobile device as claimed in claim 21 , wherein the second antenna structure is adjacent to an open end of the ground branch.

24 . The mobile device as claimed in claim 21 , wherein the circuit element is a variable capacitor.

25 . The mobile device as claimed in claim 21 , wherein the first antenna structure and the second antenna structure are disposed on a same plane.

26 . The mobile device as claimed in claim 21 , wherein the first antenna structure and the second antenna structure are disposed on two respective perpendicular planes.

27 . The mobile device as claimed in claim 21 , wherein the circuit element is disposed at a central portion of the slot.

28 . The mobile device as claimed in claim 21 , wherein the switch element is adjacent to a closed end of the slot.

29 . The mobile device as claimed in claim 21 , wherein the first antenna structure operates in a low-frequency band and a medium-frequency band, and the second antenna structure operates in a high-frequency band.

Assignees

• Htc Corp

Inventors

• Tsai Tiao-Hsing
• Chiu Chien-Pin
• Wu Hsiao-Wei
• Kung Yi-Hsiang
• Fang li-yuan

Classifications

• H01Q13/106

  Microstrip slot antennas (patch antenna elements H01Q9/0407) · CPC title

• H01Q9/0442

  with particular tuning means · CPC title

• H01Q9/42

  with folded element, the folded parts being spaced apart a small fraction of the operating wavelength · CPC title

• H01Q21/28

  Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} · CPC title

• H01Q13/10

  Resonant slot antennas · CPC title