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Ansoft Designer / Ansys Designer 在线帮助文档：

HFSS and Planar EM Simulators >
Using the Estimate Module >
Estimating Transmission Line Quantities >
Estimating Line Loss

Estimating Line Loss

Use this command to estimate the line loss of a microstrip line from the width and frequency you specify. This command is not available for trace layers between two infinite ground layers.

To estimate the line loss:

1. Select the trace layer on which the microstrip line lies.

2. Click T-Line>Line Loss.

A window appears on the right side of the Estimate module’s window.

3. Type the width of the microstrip line in the Width box.

The units for the width are the same as the current working units.

4. Type the frequency in the Frequency box, in GHz.

This frequency is independent of the maximum frequency entered in the solution setup.

5. Click Calculate to perform the estimate.

The estimated information appears in the following boxes:

Conductor Loss	Displays the estimated loss due to finite conductivity and thickness of the metal.
Dielectric Loss	Displays the estimated line loss due to imperfect dielectric materials.
Total Loss	Displays the sum of the conductor loss and the dielectric loss of the line.

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