Assessment of the Effect of a Test Setup on the Input Impedance Measurement of Cables

This paper aims at a new assessment to investigate the effect of a test setup on the input impedance of cables. The test setup includes a vertical reference plane connected to a horizontal ground plane. A connector is screwed into the vertical plane. The connector from one side is connected to a measurement device and from another side, it is connected to a cable. To assess the effect of the setup on connectors, the SMA connector and the end-launch connector are connected to the setup separately and the input impedance of the setup is measured. The results suggest that the vertical plane and the connectors have a significant impact on the test setup up to 6 GHz. This impact can be observed even by adding a 1m wire to the test setup.