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Round Wire Inductor (Closed Form): WIRE



Name Description Unit Type Default
ID Element ID Text IC1
L Wire length Length L[1]
Dia Wire diameter Length W[1]
Rho Metal resistivity relative to gold   Rho[1]

[1] User-modifiable default. Modify by editing under $DEFAULT_VALUES in the default.lpf file in the root installation directory.

Implementation Details

This component models a length of conductor having a round section. The model is implemented as a lumped element series inductor and resistor whose values are derived from the dimensions of the wire.


This element uses a special layout cell for a short circuit. The layout cell allows the elements connected on either side of the element to look through this element. For example, when a MLIN is hooked to a TFCM (capacitor) model and the project has bridge code configured, the line draws the proper interconnect between the line and the cap. If this element is placed between the line and the cap, the layout still draws the same.

You typically do not assign artwork cells to these items.

Recommendations for Use

Discontinuity models function most accurately when attached to lines that match their corresponding edges. Directly connecting discontinuity models to one another reduces their accuracy.


[1] Wadell, Brian C. Transmission Line Design Handbook, Artech House 1991.

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