Note that N-port networks in [[RF.Spice]] have schematic symbols with 2N pins. Each pair of pins represents a port. In a similar way, the generic T-line has two ports and four pins. The pins are marked with plus and minus signs. For example, in the figure above, the pins P1+ and P1- together form Port 1. Normally, the negative pins are grounded, and the positive pins are connected to the other parts of the circuit.
{{Note | Proper grounding of the [[Transmission Lines|[[Transmission Lines|[[Transmission Lines|[[Transmission Lines|[[Transmission Lines|[[Transmission Lines|transmission lines]]]]]]]]]]]] device is critical for a successful simulation.}}
[[File:tline2.png|thumb|350px| The schematic symbols of the Generic Open Stub (left) and Generic Short Stub (right) devices.]]
The physical transmission line types are characterized by their physical dimensions and material properties. The following table shows the [[parameters]] of each transmission line type:
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[[Image:Info_icon.png|40px]] Click here to see a [[List of Physical Transmission Line Types]].