Engineering Specification
ES-3U5T-1B257-AA
EMC Design Guide for Printed Circuit Boards
Frame 13 of 78
Rev. A
10/01/2002
Printed copies are uncontrolled
There are 3 ways in which to minimize the EMI:
·
Reduce the noise from the generator
·
Alter the coupling path
·
Improve the immunity of the receptor
Reducing the noise from the generator may include reducing the generator circuit area,
using a slower rise and fall time of a switching signal, using slower digital logic, reducing
the circuit current, re-orienting the generator circuit on PCB, filtering, and/or shielding.
Often the designer must contend with the generator noise. This leaves either reducing the
coupling path or hardening the receptor. Minimizing the coupling path may include
moving the receptor away from the generator, re-orienting the receptor and/or generator
on PCB, or shielding the receptor or generator.
Increasing the immunity of the receptor may include reducing the receptor circuit area,
re-orienting the receptor circuit on PCB, using less susceptible electronic components,
changing the impedance of the circuit, filtering, and/or shielding.
Summary :
A 10/01/2002 Printed copies are uncontrolled There are 3 ways in which to minimize the EMI: · Reduce the noise from the generator · Alter the coupling path · Improve the immunity of the receptor Reducing the noise from the generator may include reducing the generator circuit area, using a slower rise and fall time of a switching signal, using slower digital logic, reducing the circuit current, re-orienting the generator circuit on PCB, filtering, and/or shielding.
Tags :
receptor,generator,circuit,reducing,reorienting,noise,pcb,coupling,path,include,using,andor,shielding