电子通讯专业英语UnitIII

电子通讯专业英语unitiii xx年xx月xx日
CATALOGUE 目录
•Electromagnetic field and wave
•
Electromagnetic compatibility(EMC)
•Electromagnetic pollution and its control
CATALOGUE
目录
•Electromagnetic shielding materials and
its application
•
Electromagnetic pulse(EMP) and its effect on electronic equipment
01
Electromagnetic field and wave
Definition and classification of electromagnetic field and wave
Electromagnetic field Electromagnetic wave
EM field in communi…
EM field is essential in communication system, such as EM field generated by antenna for signal transmission, EM field generated by microwave resonator for signal processing, etc.Electromagnetic wav…
Electromagnetic field and wave in communication system
Application of electromagnetic field and wave in communication system
EM field application Electromagnetic wave
ap…
Electromagnetic compatibility(EMC)
1EMC and its impact on electronic equipment 2
3电子设备的性能可能会受到电磁干扰（EMI）的影响，导致设备出现故障、异常或性能下降。

EMC对电子设备的影响电磁兼容性是电子设备在电磁环境中正常运行的重要保障，也是保障整个系统可靠运行的关键。

电磁兼容性的重要性电子设备所处的电磁环境包括自然环境和人工
环境，如雷电、无线电波、电磁脉冲等。

EMC与环境
03滤波技术
滤波技术可以减少电磁干扰信号进入电路，常用的有电源滤波器、信号滤波器等。

EMC design and measures
01电磁兼容性设计
电磁兼容性设计是从电路设计、屏蔽、滤波、接地等方面来减少电磁干扰的方法。

02电磁屏蔽材料
电磁屏蔽材料可以阻隔电磁波传播，常用的有金属网、金属膜等。

EMC standards and testing
EMC测试
电磁兼容性测试包括辐射发射测试、传导发射测试、辐射抗扰度
测试、传导抗扰度测试等。

EMC认证
许多国家和地区都要求电子设备必须通过EMC认证，以确保其符
合相关标准。

EMC标准
国际上制定了许多电磁兼容性标准，如国际电工委员会（IEC）
和欧洲电信标准协会（ETSI）等。

Electromagnetic pollution and its
control
Includes both electric and
magnetic fields, generated by
charged particles, electrical circuits, and magnetic materials.Electromagnetic pollution and its source
Electromagnetic f…
Radiofrequency ra…ELF fields
Biological effec… EMF exposure can affect cells and
tissues, altering cell function,
gene expression, and enzyme activity.Electromagnetic pollution and human health Health hazards Electromagnetic …
Control measures of electromagnetic pollution Reducing exposure
Engineering controls
Regulatory standards
04
Electromagnetic shielding materials
and its application
Electromagnetic shielding materials and its principle of action
Electromagnetic shi…Electromagnetic shi…
Metallic electromagneti…Non-metallic electromag…
Electromagnetic shielding materials and its types
EM field interference 要点一要点二Radiation interference
Application of electromagnetic shielding material in communication system
Electromagnetic pulse(EMP) and its
effect on electronic equipment
EMP generation
EMP is generated in the process of nuclear explosion in the atmosphere or in space, and is also generated in the process of high-altitude EMP generated by high-altitude nuclear explosion.EMP propagation
EMP and its generation and propagation
EMP immunity of electronic equipment and its testing method
EMP immunity Testing method
Circuit d…
Filtering…Shielding…
Backup me…
Protection measures against EMP
01
0203
04
THANKS
谢谢您的观看。