Overview

MWI-2014 Software Instruction Manual

Overview

Installing software

Starting software and basic operations

Detailed software capabilities

MWI-2014 Software

Starting software

Installing:

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

MWI-2014 Software

1

MWI 2010

Software Operations, Material List

Dielectric Constant

"Design Dk"Dissipation Factor

Thermal Coefficient of Dk

Thermal

conductivity

of the

substrate

When floating

the mouse over

the material

name,

additional

information will

be shown.

MWI-2014 Software

2

MWI 2010

Only standard thicknesses of the

selected material are shown. This

can be overridden.

Software Operations, Material Thickness

MWI-2014 Software

3

MWI 2010

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

Software Operations, Copper definition

MWI-2014 Software

4

MWI 2010, features

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.

Software Operations, Changing Materials

MWI-2014 Software

5

MWI 2010, features

Design Dk is built into

this software

Software Operations, Changing Materials

MWI-2014 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

6

MWI 2010, features

Design Dk is built into

this software

Software Operations, Changing Materials

MWI-2014 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 literatureon the Rogers Technology Support Hub at:

http://www.rogerscorp.com/acm/technology/index.aspx

7

MWI 2010, features

User can select to generate a

table or file of information for a

range of frequencies.

Synthesis will generate the conductor width or spacing, given an impedance target.

Analytical will solve for impedance and other electrical properties given circuit geometry.

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.

Software Operations, Analytical and Synthesis

Units can be changed between

English and Metric

MWI-2014 Software

8

MWI 2010, features

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

Software Operations, Comparing Different Models

MWI-2014 Software

9

MWI 2010, features

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

Software Operations, Comparing Different Models

MWI-2014 Software

10

MWI 2010, features

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

Software Operations, Comparing Different Models

MWI-2014 Software

11

MWI 2010, features

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

Software Operations, Comparing Different Models

MWI-2014 Software

12

MWI 2010, features

The curves can be turned on-off by

clicking on the curve of interest

Software Operations, Comparing Different Models

Titles of the axes or the chart

can be entered

The scales can

be changed and

chart updated by

clicking the

Update button

MWI-2014 Software

13

MWI 2010, features

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.

Software Operations, Summary window

MWI-2014 Software

14

MWI 2010, Cut, paste

After pressing the

Calculate button, the

information can be

highlighted and copied

into other Windows

software such as a word

processor.

Software Operations, Cut & Paste to other software

MWI-2014 Software

15

MWI 2010, Cut, paste into Word

Example: copy from

MWI-2014 and

paste into Windows

Word

Software Operations, Cut & Paste to other software

MWI-2014 Software

16

MWI 2010, Generate file

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.

Software Operations, Generating Graphs in an Excel spreadsheet

MWI-2014 Software

17

30mil RO4350B LoPro, Microstrip, Insertion Loss

-0.5

-0.45

-0.4

-0.35

-0.3

-0.25

-0.2

-0.15

-0.1

-0.05

0

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Frequency (GHz)

L

o

s

s

(

d

B

/

i

n

)

Dielectric Loss

Conductor Loss

Total Loss

MWI 2010, ExcelOpen Excel spreadsheet, change

file type to "All Files" and open

"mwi2014.txt".

Click on delimited, click on Next,

click on comma delimited, click

Next and Finish.

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.

Software Operations, Generating Graphs in Excel

MWI-2014 Software

18

MWI 2010, Coplanar

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 vias on

impedance and loss,

some differences may

occur between an actual

circuit and this model

Software Operations, Multiple Transmission Line Models

MWI-2014 Software

19

MWI 2010, Microstrip

Software Operations, Multiple Transmission Line Models, Microstrip

Microstrip

models

MWI-2014 Software

20

MWI 2010, Stripline

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.

MWI-2014 Software

21

MWI 2010, 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.

Software Operations, Multiple Transmission Line Models, Stripline

MWI-2014 Software

22

MWI 2010, References

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.

Software Operations, Model References Given

MWI-2014 Software

23

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

MWI-2014 Software

24