JULY 2018 I DESIGN007 MAGAZINE 75
5
Dave Wiens Discusses Multi-board
Design Techniques
E
For our multi-board design
issue, I interviewed Dave
Wiens, product market-
ing manager for Mentor, a
Siemens business. We dis-
cussed how the multi-board
design technique differs
from laying out single boards, along with the
planning, simulation and analysis processes
required to design multi-board systems.
6
CUI Partners with SnapEDA to Offer
Free PCB Footprint Files
E
"We are committed to build-
ing the industry's largest,
verified library of component
models. Adding CUI and their
broad portfolio of board level
components to our catalog
supplies yet another source from which engi-
neers can gather PCB files for seamless integra-
tion into their designs," said Natasha Baker,
CEO of SnapEDA.
7
Making the Most of PCB Materials for
5G Microwave and mmWave Amps
E
5G represents the latest
and greatest in wireless
technology, and it will be
challenging to design and
fabricate, starting with the circuit board mate-
rials, because it will operate across many dif-
ferent frequencies, such as 6 GHz and below,
as well as at millimeter-wave frequencies (typ-
ically 30 GHz and above). It will also combine
network access from terrestrial base stations
and orbiting satellites.
8
Beyond Design: Common Symptoms
of Common-Mode Radiation
E
Unfortunately, differential-mode propagation
can be converted to common mode by para-
sitic capacitance or any imbalance caused by
signal skew, rise/fall time mismatch or asym-
metry in the channel. Also, return path discon-
tinuities can create large common mode loop
areas that increase series inductance and elec-
tromagnetic radiation. In this month's column,
I will explore the common symptoms of, and
present some cures for, common mode radia-
tion.
9
iCD Introduces the New Materials
Planner Software
E
In-Circuit Design Pty Ltd (iCD), Australia,
developer of the iCD Design Integrity software,
has released the new iCD Materials Planner
software to add to the Stackup Planner func-
tionality. This will be rolled out to iCD sup-
port customers as an update to their current
software.
J
Excerpt: The Printed Circuit
Designer's Guide to…Flex and
Rigid-Flex Fundamentals
E
The design process is arguably
the most important part of the
flex circuit
procurement pro-
cess. The decisions made in the
design process
will have a last-
ing impact, for better or worse,
throughout
the manufacturing
cycle. In advance of providing
important details about the actual construction
of the flex circuit, it is of value to provide some
sort of understanding of the expected use envi
-
ronment for the finished product.
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