Patent ID: 9709654
Date: 2017-07-18
CPC Classifications: G01R

Claim:
1. A measurement system for conducting measurements on a device-under-test (DUT), wherein impedance is controlled or varied over a set of measurement conditions and a parameter or set of parameters measured for each measurement condition, the system comprising: a passive impedance controlling tuner; a signal transmission line, the passive impedance controlling tuner including a signal transmission line segment as at least part of the signal transmission line; a signal coupling device coupled in a non-contacting relationship to the signal transmission line between a signal port of the DUT and the passive impedance controlling tuner for sampling signals propagating between the passive impedance controlling tuner and the DUT to allow measurement of an actual impedance presented to the DUT with the DUT in place in the measurement system during measurement of DUT characteristics; measurement system equipment for receiving response signals from the signal coupler; and wherein the measurement system is configured to conduct said measurement of DUT characteristics without pre-characterizing said passive impedance controlling tuner.