# ExcitationSmithQuantity

The Smith excitation quantity properties.

## Example

app = pf.GetApplication()
app:NewProject()
app:OpenFile(FEKO_HOME..[[/shared/Resources/Automation/startup.fek]])
excitationData = app.Models[1].Configurations[1].Excitations["VoltageSource"]

-- Create a smith chart and add the excitation data

-- Configure the trace quantity

excitationTrace.Quantity.Phase = 50
excitationTrace.Quantity.LoadExpression = "50"

## Usage locations (object properties)

The following objects have properties using the ExcitationSmithQuantity object:

## Property List

The load value to use. The value is a complex expression, e.g. “50+j*0”. (Read/Write Expression)
Specifies whether the loading value must be subtracted before plotting. (Read/Write boolean)
Phase
The phase to be added to the trace. The value is in degrees [-360,360]. (Read/Write number)
Enable phase addition for the trace. (Read/Write boolean)
ReferenceImpedanceExpression
The reference impedance value to use. The value is a complex expression, e.g. “50+j*0”. (Read/Write Expression)
Type
The type of quantity to be plotted, specified by the ImpedanceQuantityTypeEnum, e.g. Impedance, Admittance, Voltage, Current, etc. (Read/Write ImpedanceQuantityTypeEnum)
UseCustomReferenceImpedance
Specifies whether a custom reference impedance should be used. (Read/Write boolean)

## Property Details

The load value to use. The value is a complex expression, e.g. “50+j*0”.
Type
Expression
Access
Specifies whether the loading value must be subtracted before plotting.
Type
boolean
Access
The type of load subtraction to be plotted, specified by the LoadingTypeEnum, e.g. Impedance or Admittance.
Type
Access
Phase
The phase to be added to the trace. The value is in degrees [-360,360].
Type
number
Access
Enable phase addition for the trace.
Type
boolean
Access
ReferenceImpedanceExpression
The reference impedance value to use. The value is a complex expression, e.g. “50+j*0”.
Type
Expression
Access