AK Card

This card defines a voltage source to a radiating cable with or without irradiation considered.

On the Source/Load tab, in the Sources on geometry group, click the  Voltage source icon. From the drop-down list, click the  Voltage on cable (AK) icon.



Figure 1. The AK - Add a voltage source to a radiating cable dialog.

Parameters:

New source
A new excitation is defined which replaces all previously defined excitations.
Add to sources
A new excitation is defined which is added to the previously defined excitations.
Connection type
The voltage source can be connected in more than one configuration. The selected configuration influences the placement of an LC load if it is connected between the same pins.
Parallel source (LC connected in series)
The source is connected between a pair of cable connector pins. All cable interconnections defined using a CI card will be placed in parallel with the source. An LC load between the same two pins would result in a load being connected in series with the source. During S-parameter calculations an LC load will be replaced with the system impedance to perform the S-parameter calculation. Also see Connection Types.
Parallel source (LC connected in parallel)
The source is connected between a pair of cable connector pins. A LC load and all cable interconnections defined between the same pins will be connected in parallel with the source. Also see Connection Types.
Series source
The source is added in series between a cable connector pin and any other defined connections such as LC loads and/or CI cable interconnections (or a parallel connected voltage source). Also see Connection Types.
Note: Any cable interconnections (CI card) or loads (LC cards) will still be connected in parallel.
Terminal 1
Connector label
The connector label that uniquely identifies the connection of the cable path section.
Pin (ground=0)
The pin number identifies the conductor associated with the cable path section as defined by Connector label in the CS card. If the pin is set to 0, the connector pin is connected to ground at the connector.
Terminal 2
Connector label
The connector label that uniquely identifies the connection of the cable path section.
Pin (ground=0)
The pin number identifies the conductor associated with the cable path section as defined by Connector label in the CS card. If the pin is set to 0, the connector pin is connected to ground at the connector.
Reverse connection orientation
By default the positive terminal will be connected to the pin defined at Terminal 1 and the negative terminal of the source will be connected to the pin defined at Terminal 2. When this option is selected the orientation of the source is reversed.
Magnitude of source
Magnitude of the voltage source in V.
Phase of source
Phase of the voltage source in degrees.
Reference impedance (Ohm)
The reference impedance of the excitation is used for S-parameter calculations and is the reference impedance used for realised gain calculations. It is also the default reference impedance used to calculate and display the reflection coefficient in POSTFEKO. If this field is empty or 0 in an S-parameter calculation, the value specified at the SP card is used. For realised gain and reflection coefficient calculations, 50 Ohm will be assumed when the field is empty or 0.