WO2016115742A1 - Pcb线路板及移动通信设备 - Google Patents

Pcb线路板及移动通信设备 Download PDF

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Publication number
WO2016115742A1
WO2016115742A1 PCT/CN2015/071514 CN2015071514W WO2016115742A1 WO 2016115742 A1 WO2016115742 A1 WO 2016115742A1 CN 2015071514 W CN2015071514 W CN 2015071514W WO 2016115742 A1 WO2016115742 A1 WO 2016115742A1
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WO
WIPO (PCT)
Prior art keywords
circuit board
line
signal line
signal
ground
Prior art date
Application number
PCT/CN2015/071514
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English (en)
French (fr)
Inventor
云亚峰
李文彬
Original Assignee
深圳市鑫龙上通讯科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市鑫龙上通讯科技有限公司 filed Critical 深圳市鑫龙上通讯科技有限公司
Priority to PCT/CN2015/071514 priority Critical patent/WO2016115742A1/zh
Priority to CN201590000007.1U priority patent/CN205378257U/zh
Publication of WO2016115742A1 publication Critical patent/WO2016115742A1/zh

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details

Definitions

  • the utility model relates to the field of electronic technology, and in particular to a PCB circuit board and a mobile communication device thereof.
  • FM frequency modulation
  • transmitting signals with FM waves can avoid the influence of amplitude interference and improve communication quality.
  • FM signals ie FM signals
  • FM signals are widely used in communication, FM stereo broadcasting and television, and can also be used as electronic products such as MP3 or An additional feature in mobile communication products such as mobile phones to enhance product competitiveness.
  • MP3 Compact Disc
  • the interference signal is superimposed on the FM signal, thereby changing the amplitude of the FM wave and affecting the quality of the FM signal received by the radio.
  • the technical problem to be solved by the utility model is that, in view of the above defects of the prior art, a PCB circuit board with strong anti-interference ability and a mobile communication device thereof are provided.
  • a PCB circuit board including a power line, a ground line, a clock signal line, and an FM signal line; wherein, the FM signal line trace width is equal to a radio frequency 50 ohm impedance line line width; and the FM signal line is disposed around There is a ground line for signal shielding; the minimum distance between the FM signal line and the ground line is twice the width of the FM signal line trace.
  • the PCB circuit board of the present invention wherein the FM signal trace width is 0.15 mm, and the minimum distance between the FM signal line and the ground line is 0.3 mm.
  • the PCB circuit board of the present invention wherein the FM signal lines are disposed on the same layer circuit board.
  • the PCB circuit board of the present invention wherein the PCB circuit board further comprises a baseband chip, and the FM signal line half surrounds the baseband chip.
  • the FM signal line routing area is provided with a ground hole connected to the main ground.
  • the PCB circuit board of the present invention wherein the ground holes are evenly distributed around the FM signal line.
  • the present invention also provides a mobile communication device including a PCB circuit board as described above.
  • the utility model has the beneficial effects of: setting the FM signal line trace width to be equal to the RF 50 ohm impedance line width, and simultaneously setting the ground line around the FM signal line for signal shielding, reducing components and walking around the FM signal line.
  • the electromagnetic interference brought by the line reduces the crosstalk of the transmission line and improves the anti-interference of the FM signal line, thereby ensuring the stability of the FM frequency modulation function in the mobile communication product or other electronic products.
  • FIG. 1 is a schematic diagram of a PCB circuit board according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic view showing a partial routing of a PCB circuit board according to a preferred embodiment of the present invention.
  • the PCB circuit board of the preferred embodiment of the present invention includes a power line, a ground line 20, a clock signal line, and an FM signal line 30; wherein the FM signal line 30 has a line width and a radio frequency of 50 ohms.
  • the line of impedance 40 is equal in width; the ground line 20 for signal shielding is disposed around the FM signal line 30; the minimum value of the distance b between the FM signal line 30 and the ground line 20 is two of the line width a of the FM signal line 30. Times.
  • the FM signal line 30 equal to the line width of the RF 50 ohm impedance line 40 and the ground line 20 for signal shielding around the FM signal line 30
  • components and traces around the FM signal line 30 can be reduced.
  • the electromagnetic interference brought by the transmission line crosstalk is reduced, and the anti-interference of the FM signal line 30 is improved.
  • the trace width a of the FM signal line 30 in the PCB circuit board is 0.1 mm, and the minimum distance b between the FM signal line 30 and the ground line 20 is 0.2 mm.
  • the FM signal line 30 in the above PCB circuit board is disposed on the same layer circuit board to minimize the punching and changing layers.
  • the FM signal line 30 needs to be smoothed to remove burrs and eliminate interference to reduce signal loss.
  • the above-mentioned PCB circuit board is provided with a baseband chip, and the FM signal line 30 is half-enclosed by the baseband chip, and the FM signal line 30 does not cross with the important signal line, the sensitive clock line, the power line or Parallel setting ensures that a complete ground line 20 is disposed around the FM signal line 30 for signal shielding to improve the anti-electromagnetic interference performance of the FM signal line 30.
  • the FM signal line 30 in the PCB circuit board is provided with a sufficient number of ground holes connected to the main ground, and the ground holes are preferably evenly distributed around the FM signal line 30, and the specific number and distribution manner can be according to the PCB board. Set the specific routing mode.
  • a mobile communication device including a PCB circuit board as in the foregoing.
  • the PCB circuit board specifically includes a power line, a ground line 20, a clock signal line, and The FM signal line 30; wherein the FM signal line 30 has a line width equal to the RF 50 ohm impedance line 40 line width; the FM signal line 30 is provided with a ground line 20 for signal shielding; the FM signal line 30 and the ground line 20; The minimum distance between the distances b is twice the width a of the FM signal line 30.
  • the FM signal line 30 equal to the line width of the RF 50 ohm impedance line 40 and the ground line 20 for signal shielding around the FM signal line 30
  • components and traces around the FM signal line 30 can be reduced.
  • the electromagnetic interference brought by the transmission line crosstalk is reduced at the same time, and the anti-interference of the FM signal line 30 is improved, thereby improving the stability of the FM function of the mobile communication device.
  • the above mobile communication device includes a mobile phone, but is not limited to other electronic devices that can implement a communication function.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Noise Elimination (AREA)
  • Structure Of Printed Boards (AREA)

Abstract

一种PCB线路板及移动通信设备，PCB线路板上设置有电源线、地线（20）、时钟信号线和FM信号线（30）；FM信号线（30）走线宽度与射频50欧姆阻抗线（40）线宽相等；FM信号线（30）的周围设置有用于进行信号屏蔽的地线（20）；FM信号线（30）与地线（20）之间距离（b）的最小值为FM信号线（30）走线宽度（a）的两倍。通过将FM信号线（30）走线宽度设置为与射频50欧姆阻抗线（40）线宽相等，同时在FM信号线（30）周围设置地线（20）进行信号屏蔽，减少FM信号线（30）周围元器件和走线带来的电磁干扰，同时减少了传输线串扰，提高FM信号线（30）的抗干扰性，从而保证移动通信产品或其他电子产品中FM调频功能的稳定性。

Description

[根据细则37.2由ISA制定的发明名称]　PCB线路板及其移动通信设备 技术领域
本实用新型涉及电子技术领域，更具体地说，涉及一种PCB线路板及其移动通信设备。
 背景技术
使载波频率按照调制信号改变的调制方式叫调频（Frequency Modulation，FM），用调频波传送信号可避免幅度干扰的影响而提高通信质量，因此调频信号（即FM信号）广泛应用在通信、调频立体声广播和电视中，其还可以作为MP3等电子产品或手机等移动通信产品中的一项附加功能，提升产品竞争力。但是，在电子产品的PCB板上走线时，经常会受到其他元器件或走线的干扰，干扰信号会叠加在FM信号上，从而改变调频波的幅值，影响收音机接收调频信号的质量。
 技术问题
本实用新型要解决的技术问题在于，针对现有技术的上述缺陷，提供一种抗干扰能力强的PCB线路板及其移动通信设备。
 技术解决方案
本实用新型解决其技术问题所采用的技术方案是：
构造一种PCB线路板，包括电源线、地线、时钟信号线和FM信号线；其中，所述FM信号线走线宽度与射频50欧姆阻抗线线宽相等；所述FM信号线的周围设置有用于进行信号屏蔽的地线；所述FM信号线与所述地线之间距离的最小值为所述FM信号线走线宽度的两倍。
本实用新型所述的PCB线路板，其中，所述FM信号走线线宽度为0.15mm，所述FM信号线与所述地线之间距离最小值为0.3mm。
本实用新型所述的PCB线路板，其中，所述FM信号线设置在同一层线路板上。
本实用新型所述的PCB线路板，其中，所述PCB线路板还包括基带芯片，所述FM信号线半包围所述基带芯片设置。
本实用新型所述的PCB线路板，其中，所述FM信号线走线区域设置有连接到主地的地孔。
本实用新型所述的PCB线路板，其中，所述地孔均匀分布设置在所述FM信号线周围。
本实用新型还提供了一种移动通信设备，其中，包括如前面所述的PCB线路板。
 有益效果
本实用新型的有益效果在于：通过将FM信号线走线宽度设置为与射频50欧姆阻抗线线宽相等，同时在FM信号线周围设置地线进行信号屏蔽，减少FM信号线周围元器件和走线带来的电磁干扰，同时减少了传输线串扰，提高FM信号线的抗干扰性，从而保证移动通信产品或其他电子产品中FM调频功能的稳定性。
附图说明
下面将结合附图及实施例对本实用新型作进一步说明，附图中：
图1是本实用新型较佳实施例的PCB线路板原理示意图；
图2是本实用新型较佳实施例的PCB线路板局部走线示意图。
 本发明的实施方式
本实用新型较佳实施例的PCB线路板如图1和图2所示，包括电源线、地线20、时钟信号线和FM信号线30；其中，FM信号线30走线宽度与射频50欧姆阻抗线40线宽相等；FM信号线30的周围设置有用于进行信号屏蔽的地线20；FM信号线30与地线20之间距离b的最小值为FM信号线30走线宽度a的两倍。这样通过采用与射频50欧姆阻抗线40线宽相等的FM信号线30，同时在FM信号线30的周围设置有用于进行信号屏蔽的地线20，可以减少FM信号线30周围元器件和走线带来的电磁干扰，同时减少了传输线串扰，提高FM信号线30的抗干扰性。
优选地，如图2所示，上述实施例中，PCB线路板中FM信号线30走线宽度a为0.1mm，FM信号线30与地线20之间距离b最小值为0.2mm。
优选地，上述PCB线路板中FM信号线30设置在同一层线路板上，尽量减少打孔换层。
优选地，上述PCB线路板中，需要对FM信号线30进行平滑处理，去掉毛刺，消除干扰，以减少信号损耗。
优选地，如图1所示，上述PCB线路板上设置有基带芯片，FM信号线30半包围基带芯片设置，同时在FM信号线30不与其中重要信号线、敏感时钟线、电源线交叉或平行设置，保证FM信号线30的周围都设置有完整的地线20进行信号屏蔽，以提高FM信号线30的抗电磁干扰性能。
优选地，上述PCB线路板中FM信号线30走线区域设置有数量足够的连接到主地的地孔，地孔优选均匀分布设置在FM信号线30周围，具体数量及分布方式可根据PCB板上具体走线方式设置。
在本实用新型另一实施例中，还提供了一种移动通信设备，包括如前面的PCB线路板，参阅图1和图2，PCB线路板具体包括电源线、地线20、时钟信号线和FM信号线30；其中，FM信号线30走线宽度与射频50欧姆阻抗线40线宽相等；FM信号线30的周围设置有用于进行信号屏蔽的地线20；FM信号线30与地线20之间距离b的最小值为FM信号线30走线宽度a的两倍。这样通过采用与射频50欧姆阻抗线40线宽相等的FM信号线30，同时在FM信号线30的周围设置有用于进行信号屏蔽的地线20，可以减少FM信号线30周围元器件和走线带来的电磁干扰，同时减少了传输线串扰，提高FM信号线30的抗干扰性，从而提高移动通信设备FM功能的稳定性。
优选地，上述移动通信设备包括手机，但不限于是其他可实现通信功能的电子设备。
应当理解的是，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本实用新型所附权利要求的保护范围。

Claims (7)

  1. 一种PCB线路板，包括电源线、地线（20）、时钟信号线和FM信号线（30）；其特征在于，所述FM信号线（30）走线宽度与射频50欧姆阻抗线（40）线宽相等；所述FM信号线（30）的周围设置有用于进行信号屏蔽的地线（20）；所述FM信号线（30）与所述地线（20）之间距离（b）的最小值为所述FM信号线（30）走线宽度（a）的两倍。
  2. 根据权利要求1所述的PCB线路板，其特征在于，所述FM信号线（30）走线宽度为0.1mm，所述FM信号线（30）与所述地线（20）之间距离最小值为0.2mm。
  3. 根据权利要求1所述的PCB线路板，其特征在于，所述FM信号线（30）设置在同一层线路板上。
  4. 根据权利要求1所述的PCB线路板，其特征在于，所述PCB线路板还包括基带芯片，所述FM信号线（30）半包围所述基带芯片设置。
  5. 根据权利要求1所述的PCB线路板，其特征在于，所述FM信号线（30）走线区域设置有连接到主地的地孔。
  6. 根据权利要求5所述的PCB线路板，其特征在于，所述地孔均匀分布设置在所述FM信号线（30）周围。
  7. 一种移动通信设备，其特征在于，包括如权利要求1-6中任一项所述的PCB线路板。
PCT/CN2015/071514 2015-01-24 2015-01-24 Pcb线路板及移动通信设备 WO2016115742A1 (zh)

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PCT/CN2015/071514 WO2016115742A1 (zh) 2015-01-24 2015-01-24 Pcb线路板及移动通信设备
CN201590000007.1U CN205378257U (zh) 2015-01-24 2015-01-24 一种pcb线路板及其移动通信设备

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WO2023083095A1 (zh) * 2021-11-10 2023-05-19 华为技术有限公司 一种电路板封装结构、电路板组件以及电子设备

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CN112803754B (zh) * 2019-11-13 2022-04-15 广东美的白色家电技术创新中心有限公司 Emi滤波器及家电设备

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US20040160287A1 (en) * 2003-02-14 2004-08-19 Miller Dennis J. Method and apparatus for rejecting common mode signals on a printed circuit board and method for making same
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US20040160287A1 (en) * 2003-02-14 2004-08-19 Miller Dennis J. Method and apparatus for rejecting common mode signals on a printed circuit board and method for making same
JP2005294651A (ja) * 2004-04-01 2005-10-20 D & M Holdings Inc 基板回路装置及び受信装置
CN201733518U (zh) * 2010-04-27 2011-02-02 青岛海信移动通信技术股份有限公司 电路板结构以及移动终端
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