EMC/EMI Shielding/Grounding for Chip & PCB Layout (140)

Five 90-minute sessions. This seminar discusses techniques for identifying the sources of unwanted coupling and radiation, and systematic approaches for their minimization. This course is available as part of the RF Mentor Academy subscription.
 
Objectives:

• Define electromagnetic compatibility.
• Identify sources of coupling and radiation.
• Discuss and simulate the effectiveness of various shielding strategies.

Target Audience:
Product and package design engineers of all expertise levels will benefit from this course. A basic engineering background (BSEE or equivalent) is required.Outline

Electomagnetic Compatibility

Definition of EMC

Ground definitions

Measuring Radiation

large scale (test box) and localized (probes)

Coupling and Radiation

Differential and common mode connections

Coupling control techniques

Crosstalk between microstrip vs other lines

Radiation vs. loop area

Isolation techniques

Shielding

Shielding effectiveness and wave impedance; shield materials

Effects of slots and holes in shield

Multiple small or fewer large holes?

Transfer impedance as the effectiveness parameter

Grounding

Current distribution between shield and ground plane

Coupling through common ground inductance

Shared vias

Ground plane discontinuities and inductance effects

Choking off ground currents, filtering the power lines

Experimental/Numerical Techniques of Problem Solving

Case Studies