National Instruments Graphical User Interface Ultiboard - Manual (Page 185)

Chapter 6 PCB Calculators
NI Ultiboard User Manual 6-2 ni.com
The PCB Transmission Line Calculator supports:
• Microstrip Trace Calculations.
• Embedded Microstrip Trace Calculations .
• Centered Stripline Trace Calculations .
• Asymmetric Stripline Trace Calculations .
• Dual Stripline Trace Calculations .
Microstrip Trace Calculations
Complete the following steps to perform microstrip trace calculations:
1. Select Tools»PCB Transmission Line Calculator.
2. Select Microstrip in the Type drop-down list.
3. In the Input Data area, edit the following fields as desired.
• Input Length Unit—Select mils or millimeters.
• Dielectric Thickness (H)—Refer to the figure below.
• Trace Thickness (T)—Refer to the figure below.
• Trace Width (W)—Refer to the figure below.
• Relative Permittivity (epsilon r)—Refer to the figure below.
4. Click Calculate. Results of the calculation appear in the Calculation
Results area. They also appear in the Results tab of the Spreadsheet
View.
5. Click Close to close the PCB Transmission Line Calculator.