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Overview
MWI-2014 Software Instruction Manual
MWI-2014 Software
Overview
• Installing software
• Starting software and basic operations
• Detailed software capabilities
Starting software
Installing:
MWI-2014 Software
• After downloading the mwi2014.exe file, save it on the hard drive of the
computer that will be using the software
– Do not install on a network system
– If not able to download the *.exe file, there is an option to download the same file
that is in a zip format
• Double click on the "mwi2014.exe"
• The computer that runs the software must:
•
•
use English (U.S.) as the language for the operating system
have an operating system with the dot-net framework, which most do since 2004
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MWI-2014 Software
MWI 2010
• Software Operations, Material List
Dielectric Constant
"Design Dk"
Thermal Coefficient of Dk
Dissipation Factor
Thermal
conductivity
of the
substrate
When floating
the mouse over
the material
name,
additional
information will
be shown.
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MWI 2010
• Software Operations, Material Thickness
MWI-2014 Software
Only standard thicknesses of the
selected material are shown. This
can be overridden.
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MWI 2010
MWI-2014 Software
• Software Operations, Copper definition
When copper is selected
only standard
thicknesses and copper
types of the selected
material are shown.
This can be overridden.
The associated copper
roughness is used within
the program as shown.
This can be overridden.
Conductor conductivity
can be entered; however
it will affect all conductor
layers of the circuit
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MWI 2010, features
MWI-2014 Software
• Software Operations, Changing Materials
When changing from one
material to another, the
nearest standard
thickness of new material
selected will be chosen.
The optimum copper type
will be automatically
selected, for the newly
selected material.
Both of these can be
overridden.
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MWI 2010, features
MWI-2014 Software
• Software Operations, Changing Materials
Design Dk is built into
this software
For simple
impedance
calculations the
default z-axis Bulk
Dk can be used
More accurate
results can be
achieved by using
the Digital Dk
Values
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MWI-2014 Software
MWI 2010, features
• Software Operations, Changing Materials
Design Dk is built into
this software
For RF applications
at a specific
frequency or narrow
frequency range,
then the RF Design
Dk values can be
used.
For more
information on
Design Dk please
refer to literature
on the Rogers Technology Support Hub at:
http://www.rogerscorp.com/acm/technology/index.aspx
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MWI-2014 Software
MWI 2010, features
•
Software Operations, Analytical and Synthesis
Units can be changed between
English and Metric
User can select to generate a
table or file of information for a
range of frequencies.
For some circuit geometries
and/or designs, the synthesis
may be unstable.
Using the Analytical option is
safer and gives much more
information.
User can do a simple
Synthesis, then click to
Analytical and it will hold the
same data and give much more
information when the calculate
button is pressed.
Synthesis will generate the conductor width or spacing, given an impedance target.
Analytical will solve for impedance and other electrical properties given circuit geometry.
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MWI 2010, features
MWI-2014 Software
• Software Operations, Comparing Different Models
After the calculate
button is pressed, the
results can be put into
a database to compare
multiple circuit models
and this is done by
pressing the Add
button
To add another model,
change the
parameters, click
Calculate and then
click Add
The only Design Types
available for
comparison are
Conventional
Microstrip and Stripline
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MWI 2010, features
MWI-2014 Software
• Software Operations, Comparing Different Models
Models in the
Compare database
can be edited
To edit a model, select
the model from the
dropdown box, make
the changes to the
circuit parameters and
click on the Update
button
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MWI 2010, features
MWI-2014 Software
• Software Operations, Comparing Different Models
Once the models are
defined in the
Compare database,
then click the
Compare button and a
comparison table will
appear
5 models can be
compared at one time
This comparison was
at a discrete frequency
of 2 GHz
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MWI 2010, features
MWI-2014 Software
• Software Operations, Comparing Different Models
Graphs of insertion
loss can be compared
as well
The models must be
defined as Generating
a Table of Loss vs.
Frequency
After the models are
added to the Compare
database, click
compare to view the
graph
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MWI-2014 Software
MWI 2010, features
• Software Operations, Comparing Different Models
The scales can
be changed and
chart updated by
clicking the
Update button
The curves can be turned on-off by
clicking on the curve of interest
Titles of the axes or the chart
can be entered
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MWI 2010, features
MWI-2014 Software
• Software Operations, Summary window
If this is checked, the text
window will clear each
time the calculate button
is pressed.
If not checked, all of the
models ran will
accumulate in the text
window; with no known
limit.
With additional
information, the window
will default to the top, so
the user will need to
scroll down to see the
most recent information.
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MWI 2010, Cut, paste
MWI-2014 Software
• Software Operations, Cut & Paste to other software
After pressing the
Calculate button, the
information can be
highlighted and copied
into other Windows®
software such as a word
processor.
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MWI 2010, Cut, paste into Word
MWI-2014 Software
• Software Operations, Cut & Paste to other software
Example: copy from
MWI-2014 and
paste into Windows®
Word
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MWI 2010, Generate file
MWI-2014 Software
• Software Operations, Generating Graphs in an Excel® spreadsheet
A comma delimited file
can be generated with a
table of information.
A file will be saved in the
same directory as the
MWI-2014 software and
named "mwi2014.txt".
The user can open this
file with Excel and follow
the prompts for importing
the file as a comma
delimited file. This will
allow the user to
manipulate the data and
generate graphs.
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Open Excel® spreadsheet, change
file type to "All Files" and open
"mwi2014.txt".
MWI 2010, Excel
MWI-2014 Software
Click on delimited, click on Next,
click on comma delimited, click
Next and Finish.
• Software Operations, Generating Graphs in Excel
With the table of information, you
can easily generate a graph.
To avoid complications, the user
should rename this new Excel file
immediately, to something other
than "mwi2014.txt" and with the
".xls" extension.
30mil RO4350B LoPro, Microstrip, Insertion Loss
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-0.05
-0.1
-0.15
Loss (dB/in)
-0.2
Dielectric Loss
Conductor Loss
-0.25
Total Loss
-0.3
-0.35
-0.4
-0.45
-0.5
Frequency (GHz)
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MWI 2010, Coplanar
MWI-2014 Software
• Software Operations, Multiple Transmission Line Models
Several improvements
were made to the
Conductor Backed
Coplanar model for
impedance and losses
Typically this model has
issues with thinner
constructions and copper
thickness variance.
Since this model cannot
determine the effects of
grounding via’s on
impedance and loss,
some differences may
occur between an actual
circuit and this model
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MWI 2010, Microstrip
MWI-2014 Software
• Software Operations, Multiple Transmission Line Models, Microstrip
Microstrip
models
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MWI 2010, Stripline
MWI-2014 Software
• Software Operations, Multiple Transmission Line Models, Stripline
There are multiple
methods to build stripline
circuits and additional
models have been added
to consider the most
common constructions.
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MWI 2010, Stripline
MWI-2014 Software
• Software Operations, Multiple Transmission Line Models, Stripline
For a composite or offset
composite stripline
circuit, the conductor
roughness number is
taken from the bottom
substrate properties.
In this example the
RO4000® family of
materials are used.
However any of Rogers'
laminates can be chosen.
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MWI-2014 Software
MWI 2010, References
• Software Operations, Model References Given
User can get the references for whichever
transmission line is selected.
Example to the left: after microstrip design
is selected, click on Information and click on
References. The technical references used
for the calculations are shown.
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MWI-2014 Software
Windows and Excel are licensed trademarks of Microsoft®
The world runs better with Rogers., the Rogers' logo, RT/duroid, TMM, ULTRALAM, RO3000, RO3003,
RO3006, RO3010, RO3035, RO4003, RO4450B, RO4000, XT/duroid are licensed trademarks of Rogers
Corporation
The information in this presentation is intended to assist you in working with Rogers' High-Frequency Materials. It is not intended to and does not create any
warranties, express or implied, including any warranty of merchantability or fitness for a particular purpose or that any results show in this presentation will
be achieved by a user for a particular purpose. The user is responsible for determining the suitability of Rogers' High Frequency Materials for each
application.
This presentation may not be reproduced, copied, published, broadcast, transmitted or otherwise distributed without the written approval of Rogers
Corporation.
©2009 Rogers Corporation. All rights reserved
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