Demo on AWR Microwave Office for the Beginners...Demo on AWR Microwave Office for the Beginners...
Transcript of Demo on AWR Microwave Office for the Beginners...Demo on AWR Microwave Office for the Beginners...
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Demo on AWR Microwave Office
for the Beginners
Prof. D. Kannadassan,
Photonic and Microwave Division
School of Electronics Engineering
VIT University, Vellore - India
Email: [email protected]
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Title bar
Menu bar
Toolbar
System diagrams
Circuit schematics
Project Browser
Workspace
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Objective: Design and implement a simple matching network (Quarter Wave
Transformer) to match a 50 Ohm Transmitter to a dipole antenna (73 Ohm) on
the Microstrip substrate (Permittivity: εr=4.4, Height of the substrate H=1.6mm,
Conductor Thickness T=0.05mm, Loss tangent tan δ = 0.001)
Txer
QWT
H=1.6mm
substrate
W,L
QWT design:
ZA= 50 Ohm (Txer)
ZB= 73 Ohm (Dipole)
Therefore Characteristics
impedance of
QWT = SQRT (ZA×ZB)
≈ 60.1452 Ohm
Electrical Length = λ/4 = 90o
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First, we will calculate the Width and length of
QWT Microstrip Line
AWR provides a simple planar transmission line calculator
which is available in “Tool Menu” Txline…
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Change the “known” Material, Electrical and Physical
properties..
Don’t Close this window till experiment is over; it would
be helpful in future
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Double Click
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Start and Stop
Frequency can be
given as:
Start = 0.5×fo
Stop= 1.5×fo
Step = 0.1×fo
Don’t forget to push
“Apply” - Button
Step frequency is based on requirement
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Change units based on requirement, so you shall enter
only values in future.
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For circuit design, “Right Click” on Circuit Schematics
and Go for New schematic. And Name it
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This area is called “Work-Space”, you can put circuit
elements and connect them
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For circuit elements, we need “Element browser”, it’s
available in “View Menu”
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“Element browser”
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First of all, “Define” the Substrate as
“Microstrip Line Substrate”. Just Click
on “Substrates” (don’t expand) and Drag
“MSUB” to Work-Space
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Change the Substrate definition. For
simplicity, the Rho (ρ) and Ernorm
(εr, norm) are taken as 1 and εr
respectively
Double Click on Each value and edit
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Drag a Microstrip line from
“Microstrip” “Lines” “MLIN”
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Change it’s W, L as for QWT
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The Transmitter and Dipole antenna’s equivalent impedance can be
introduced as “Port”. Ports can measure almost all parameters, like S
Parameters, which includes port impedance.
You can get them in “Element Browser Port”, or it often available
in “Tool bar”.
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Change to 73 Ohm at Port-2.
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The construction of circuit is over, now we should measure the S-Parameters
through “Graphs”. Right Click on Graphs, Create a new graph.
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Name the graph..
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Right Click on graph and go for “Add New Measurement..”
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You can select suitable measurement parameters. You should be careful about “
Data Source Name” which links with the required circuit.
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Once selected the parameters, click “Apply” to add it in graph. It adds like a
legend. Once added all, click “OK”
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Now we can go for “Simulation”, it’s available in “Simulate Menu”, click on
“Analyze”.
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You got the result..
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To get the numerical values of these measurement, you can duplicate it to tabular
in the Project browser by right click on the required graph.