82 DESIGN007 MAGAZINE I FEBRUARY 2018
1
The PCB Design Magazine is
Renamed Design007 Magazine;
January 2018 Edition Now Available
E
To ring in the new year, we've made a few
changes to our magazines. You may have
noticed that our name has changed from The
PCB Design Magazine to Design007 Magazine.
Not only did we update our magazine's name,
but we also refreshed the interior pages of the
publication.
2
Beyond Design: Signal Flight Time
Variance in Multilayer PCBs
E
Signals travel at the same
speed, given the same
medium. However, the
microstrip (outer layer)
traces are embedded in a
mélange of dielectric mate-
rial, solder mask (if required)
and air. This lowers the effective dielectric
constant and increases the propagation speed
compared to that of stripline (inner layer)
traces. This month, I will look at the disparity
in signal propagation in multilayer PCBs.
3
Dr. Johannes Adam Gets Hot
on Thermal Management
E
Thermal management expert
Johannes Adam, PhD, was
kind enough to take the train
from his home in Leimen,
Germany to meet with me
during productronica in
Munich.
4
EMA Cloud Lined
with Capability
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Editor Kelly Dack
speaks with EMA
Design Automa-
tion Marketing
Manager Chris
Banton about the company's new free cloud-
based OrCAD schematic capture tool, OrCAD's
design constraint manager, and the Sigrity
electrical rule checker.
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