Changes

Just as in low frequency circuits, RF circuits must be excited using a voltage or current source. However, in order to ensure a successful RF circuit simulation, your source must be a single-frequency (sinusoidal) AC source. Remember that in [[RF.Spice A/D]] circuits, you must specifically designate a source to operate as an AC source for all [[tests]] of the AC type. The RF Menu of [[RF.Spice A/D]] provides two additional types sources: the AC voltage source with the keyboard shortcut "Alt+V" and the AC current source with the keyboard shortcut "Alt+I". These sources are identical to the regular voltage and current sources of [[RF.Spice A/D]], whose "Use" checkboxes in the AC section of their source property dialog are automatically checked.