Printed antenna and terminal device

Patent metadata

Field	Value
Publication number	US-9847580-B2
Application number	US-201414579897-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Jul 31, 2013
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

The present invention disclose a printed antenna, so as to increase power and a frequency band width of an antenna. The printed antenna includes a printed circuit board, an antenna pattern, and a signal feed-in point, where the antenna pattern is printed on a front surface of the printed circuit board, and the antenna pattern includes a first antenna pattern, a second antenna pattern, and a third antenna pattern; the signal feed-in point is connected to the second antenna pattern; one end of a side, of the first antenna pattern is connected to the second antenna pattern; the second antenna pattern is vertically laid out in parallel to an edge of the printed circuit board; and the third antenna pattern includes a first part and a second part, and the first part and the second part are arranged in parallel in the non-closed rectangle.

First claim

What is claimed is:

1. A printed antenna comprising:
a printed circuit board;
an antenna pattern printed on a front surface of the printed circuit board, the antenna pattern comprising:
a first antenna pattern comprising a plurality of sides of an open rectangle and that include a first side, a second side and a third side, a first portion of the first antenna pattern forming the first side and having a first antenna edge disposed at a first board edge of the printed circuit board, and a second portion of the first antenna pattern forming the second side and the third side of the open rectangle and extending around a metal ground of the printed circuit board;
a second antenna pattern laid out along a second board edge of the printed circuit board, the second antenna pattern forming at least a part of a fourth side of the open rectangle, the second antenna pattern having a first end connected to an end of a second edge of the first portion of the first antenna pattern, the second edge of the first portion of the first antenna pattern being parallel to the first board edge of the printed circuit board and further being opposite the first portion of the first antenna pattern from the first antenna edge, wherein the second portion of the first antenna pattern extends past a second end of the second antenna pattern, wherein the second end of the second antenna pattern is spaced apart from the second portion of the first antenna pattern by first spacing that forms a gap of the open rectangle; and
a third antenna pattern disposed within the open rectangle, the third antenna pattern comprising a first part and a second part, the first part and the second part being arranged in parallel, an end of the first part being connected to the first antenna pattern, the first part extending from the first antenna pattern parallel to the first board edge, an end of the second part being connected to the second antenna pattern; and

a signal feed-in point connected to the second antenna pattern.

2. The printed antenna of claim 1 , further comprising a welding device.

3. The printed antenna of claim 2 , wherein the welding device connects the first antenna pattern to the end of the first part of the third antenna pattern.

4. The printed antenna of claim 2 , wherein the welding device connects the second antenna pattern to the end of the second part of the third antenna pattern.

5. The printed antenna of claim 2 , wherein the welding device comprises at least one of a capacitor, an inductor, or a resistor.

6. The printed antenna of claim 1 , wherein the first part of the third antenna pattern comprises at least two components connected by a welding device.

7. The printed antenna of claim 1 , wherein the second part of the third antenna pattern comprises at least two components connected by a welding device.

8. The printed antenna of claim 1 , wherein the first part of the third antenna pattern comprises a width, a length, a shape, or a quantity that is set to a fixed value.

9. The printed antenna of claim 8 , wherein the fixed value is selected to implement coverage of a LTE full frequency band.

10. The printed antenna of claim 1 , wherein the second part of the third antenna pattern comprises a width, a length, a shape, or a quantity that is set to a fixed value.

11. The printed antenna of claim 10 , wherein the fixed value is selected to implement coverage of a LTE full frequency band.

12. The printed antenna of claim 1 , wherein the first antenna pattern comprises a width and a length that is set to a fixed value.

13. The printed antenna of claim 12 , wherein the fixed value is selected to implement coverage of a LTE full frequency band.

14. The printed antenna of claim 1 , wherein the second antenna pattern comprises a width and a length that is set to a fixed value.

15. The printed antenna of claim 14 , wherein the fixed value is selected to implement coverage of a LTE full frequency band.

16. The printed antenna of claim 1 , wherein the first antenna pattern is sized, and the second portion of the first antenna pattern is arranged around the metal ground of the printed circuit board such that, in use, electromagnetic coupling is generated between the second portion of the first antenna pattern and the metal ground of the printed circuit board, wherein the electromagnetic coupling generates a low frequency band of a first antenna radiation that is between about 698 MHz to 960 MHz; and
wherein the second antenna is arranged and sized such that the second antenna generates a high frequency band of a second antenna radiation that s between about 2 GHz to 3 GHz.

17. A terminal device comprising:
a printed antenna comprising:
a printed circuit board;
an antenna pattern printed on a front surface of the printed circuit board, the antenna pattern comprising:
a first antenna pattern comprising a plurality of sides of an open rectangle and that include a first side, a second side and a third side, a first portion of the first antenna pattern forming the first side and having a first antenna edge disposed at a first board edge of the printed circuit board, and a second portion of the first antenna pattern forming the second side and the third side of the open rectangle and extending around a metal ground of the printed circuit board;
a second antenna pattern laid out along a second board edge of the printed circuit board, the second antenna pattern forming at least a part of a fourth side of the open rectangle, the second antenna pattern having a first end connected to an end of a second edge of the first portion of the first antenna pattern, the second edge of the first portion of the first antenna pattern being parallel to the first board edge of the printed circuit board and further being opposite the first portion of the first antenna pattern from the first antenna edge, wherein the second portion of the first antenna pattern extends past a second end of the second antenna pattern, wherein the second end of the second antenna pattern is spaced apart from the second portion of the first antenna pattern by first spacing that forms a gap of the open rectangle; and
a third antenna pattern disposed within the third antenna pattern comprising a first part and a second part, the first part and the second part being arranged in parallel, an end of the first part being connected to the to the first antenna pattern, the first part extending from the first antenna pattern parallel to the first board edge, an end of the second part being connected to the second antenna pattern; and
a signal feed-in point connected to the second antenna pattern; and
a communications module configured to access a wireless network through the printed antenna.

18. The terminal device of claim 17 , further comprising at least two printed antennas, wherein a first printed antenna is a primary antenna, and a second printed antenna is a secondary antenna.

19. The terminal device of claim 17 , wherein the terminal device comprises one of a data card, a wireless network interface card, a modem, a mobile phone, a personal computer, or a device that can perform wireless communication.

20. The terminal device of claim 17 , wherein the first antenna pattern is sized, and the second portion of the first antenna pattern is arranged around the metal ground of the printed circuit board such that, in use, electromagnetic coupling is generated between the second portion of the first antenna pattern and the metal ground of the printed circuit board, wherein the electromagnetic coupli

Assignees

• Huawei Device Co Ltd

Inventors

• Wang Wen
• Liu Qing
• Lan Yao
• Li Zhenghao
• Jiang Lintao

Classifications

• H01Q5/371

  Branching current paths · CPC title

• H01Q1/38

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H01Q5/321

  within a radiating element or between connected radiating elements · CPC title

• H01Q9/0407 Primary

  Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40) · CPC title