Measurement Setup for Impedance Tuning Unit Characterization

In English An Impedance Tuning Unit (ITU) has the ability to tune the impedance of for instance the antenna to better match another impedance. To effectively characterize a circuit containing an ITU, several functions in a measurement system need to be remotely controlled. In this paper such a measurement system is described. A line tune screw creates impedances for the ITU to match and a digital acquisition hardware (DAQ) controls the ITU. A LabVIEW interface is used to controll the DAQ and a network analyzer for measurements, as well as to collect, calculate and store data.