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U-Element Lossy Transmission Line

U-Element Lossy Transmission Line

U-Element Instance Netlist Syntax

The netlist syntax for a lossy transmission line instance is:

Uxxxx in1 [...inNL] refin out1 [...outNL]]refout

[modelname] L=length [LUMPS=num_sections]

Nodes in1 through inNL are the input signal voltages. refin is the common reference voltage for all inputs. out1 through outNL are the output signal voltages corresponding to the inputs. refout is the common reference voltage for all outputs.

The modelname is the name of a .MODEL statement for a type U lossy transmission line. The number of signal lines specified by the NL parameter on the model must be the same as the number of signal lines on the instance.

**U-Element Instance Parameters**
Model Parameter	Description	Unit	Default
L	Line length	Meter	Required
LUMPS	Number of lumped-parameter sections	None	1

U-Element Instance Netlist Example

U21 1 2 3 0 4 5 6 0 umodel1 L=5e-3 LUMPS=10

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