Pcb board, terminal and method for improving anti-interference capability of pcb board

Patent metadata

Field	Value
Publication number	US-2016248153-A1
Application number	US-201415031580-A
Country	US
Kind code	A1
Filing date	Apr 15, 2014
Priority date	Oct 23, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

Disclosed are a PCB board, a terminal and a method for improving an anti-interference capability of the PCB board. The method comprises: by setting an anti-interference antenna, enabling the impedance between a signal input terminal of an operation antenna of a PCB board and a common ground terminal of the PCB to be greater than the impedance between a signal input end of the anti-interference antenna and the common ground terminal.

First claim

1 . A PCB board, comprising a working antenna and an anti-interference antenna, wherein impedance between a signal input terminal of the working antenna and a common ground terminal of the PCB board is greater than impedance between a signal input terminal of the anti-interference antenna and the common ground terminal of the PCB board.

2 . The PCB board of claim 1 , wherein the working antenna is a monopole antenna.

3 . The PCB board of claim 1 , wherein the signal input terminal of the anti-interference antenna is connected to the common ground terminal.

4 . The PCB board of claim 1 , wherein a resonant frequency of the anti-interference antenna falls into a receiving frequency band of the working antenna.

5 . The PCB board of claim 4 , wherein the anti-interference antenna is provided with a resonant frequency control circuit.

6 . The PCB board of claim 1 , wherein polarization orientations of the working antenna and the anti-interference antenna are perpendicular to one another.

7 . The PCB board of claim 1 , wherein the working antenna and the anti-interference antenna are located at edges on different sides of the PCB board.

8 . A terminal, comprising the PCB board of claim 1 .

9 . A method for enhancing an anti-interference capability of a PCB board, the PCB board having a working antenna, the method comprising:
providing an anti-interference antenna on the PCB board; and setting impedance between a signal input terminal of the working antenna and a common ground terminal of the PCB board to be greater than impedance between a signal input terminal of the anti-interference antenna and the common ground terminal of the PCB board.

10 . The method of claim 9 , further comprising: setting a monopole antenna as the working antenna.

11 . The method of claim 9 , further comprising: setting the signal input terminal of the anti-interference antenna to be connected to the common ground terminal.

12 . The PCB board of claim 2 , wherein a resonant frequency of the anti-interference antenna falls into a receiving frequency band of the working antenna.

13 . The PCB board of claim 3 , wherein a resonant frequency of the anti-interference antenna falls into a receiving frequency band of the working antenna.

14 . The PCB board of claim 12 , wherein the anti-interference antenna is provided with a resonant frequency control circuit.

15 . The PCB board of claim 13 , wherein the anti-interference antenna is provided with a resonant frequency control circuit.

16 . The PCB board of claim 2 , wherein polarization orientations of the working antenna and the anti-interference antenna are perpendicular to one another.

17 . The PCB board of claim 3 , wherein polarization orientations of the working antenna and the anti-interference antenna are perpendicular to one another.

18 . The PCB board of claim 2 , wherein the working antenna and the anti-interference antenna are located at edges on different sides of the PCB board.

19 . The PCB board of claim 3 , wherein the working antenna and the anti-interference antenna are located at edges on different sides of the PCB board.

Assignees

• Zte Corp

Inventors

• Luo Ling
• Cheng Pangang
• Luo Yibao

Classifications

• H01Q1/521 Primary

  reducing the coupling between adjacent antennas · CPC title

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title

• H05K2201/10098

  Components for radio transmission, e.g. radio frequency identification [RFID] tag, printed or non-printed antennas · CPC title

• H05K1/0216

  Reduction of cross-talk, noise or electromagnetic interference (grounding H05K1/0215) · CPC title

• H05K1/025

  Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance (H05K1/024 and H05K1/0243 take precedence; for semiconductor devices H10W44/20) · CPC title