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Microwave Office Basic Using Steps
Speaker: 簡智宏
Design Example
Spec.
0.1dB ripple fractional bandwidth ¼ lambda coupled line BPF
S11 should smaller than -15dB in the passband
FBW=30%
1.Open New Schematic
Enter Schematic’s name
2.Choose Unit
Units
Press if MKS unit is needed
3.Choose elements
Press Elem bottom first
4.Add substrate (Microstrip here )
1.click substrate
2.Choose MSUB
3.Double click to change the value
Here Al2O3 substrate is usedDielectric constant=9.8
Substrate Thickness=15mil
5.Choose coupled line
1.Coupled lines
2.Drag MCLIN
Hand calculation data for coupled lines
Total four ¼ lambda resonators are used hereFirst resonator: line width 8.3125mil,gap 2.4061mil,length 486.6 mil
Second resonator: line width 8.9375mil,gap 2.625mil,length 485.3 milThird resonator: line width 8.9375mil,gap 2.625mil,length 485.3 mil
Fourth resonator: line width 8.3125mil,gap 2.4061mil,length 486.6 mil
6.Connect the coupling lines
7.Add ports
Click here
8.Set project frequencies
Set project frequencies cont’d
Remember to click Apply
9. See the response
See the response cont’d
Enter graphname
Add measurement
Add measurement cont’d
Choose measurement type
Choose the circuit
use dB scale
Result
10. Fine tune the ckt parameters
Click here and choose the ckt parameters to
tune
Start to tune
1.click tune
2.drag the value to change
Fine tune result
11. Optimize
Optimize (2)
1.choose one measurement to meet the goal
2.Goal type
3.frequency tosatisfy goal
Optimize (3)
Variables to opt
optimize (4)
optimize (5)
optimize(6)
12. TXL
TXL cont’d
