Behind The Mystery of Electromagnetic Compatibility Design 4
Applications
Many EMC problems from electronic devices can be solved with a
chip-bead ferrite solution in the EMI signal path. Numerous Internet
of Things (IoT) applications have wireless integrated into the devices,
and Würth Elektronik provides multilayer chip-bead ferrites to ensure
EMI problems are not generated. Many applications commonly use a
ferrite bead, including:
■ Suppression on signal lines
■ High-frequency radio frequency (RF) modules (In the V
cc
lines to
make sure no EMI problems are generated)
Behind the Magic of
High-Frequency SMT
Chip Bead Ferrites
JOANNE WU
WÜRTH ELEKTRONIK
Introduction
The movement toward higher frequency into
the gigahertz range has begun. The demand
to know the characteristics of electromagnetic
compatibility (EMC) components used beyond
their typical application range exists. The
following aims to explain some uncommon
applications where the Würth Elektronik
WE-CBF HF high-frequency series is a suitable
alternative to traditional design topologies.
■ Filtering harmonics for mobile communication
■ Data line filtering in high-speed bus systems (CAN, USB, Video,
RS232, Wireless LAN)
■ Filtering circuits
■ Impedance matching circuits
■ DC biasing
However, it is interesting to show different ways of using a chip bead
in different application scenarios. Here we introduce uncommon
applications of interest where WE-CBF HF is a suitable alternative to
traditional components in these circuit designs.
