CALIBRATION DEVICE FOR A NETWORK ANALYZER (as amended)

A calibration device for a network analyzer with several ports, comprising:

• a calibration circuit, which is connected respectively via one terminal port to each one of the several ports of the network analyzer,
• wherein a single first transistor and respectively a single second transistor are connected in series at each terminal port,
• wherein both said first and second transistors are connected at their common connection to the respective terminal port,
• wherein said single first transistor and said single second transistor for each respective terminal port are provided within the calibration circuit,
• wherein the first transistors are operated as an adjustable load that is adjustable by applying a gate voltage or a base current to the latter, and
• wherein the adjustable load refers to intermediate resistive states, wherein the respective transistor is not driven into saturation, so that a separate termination can be dispensed with.