Patent ID: 9366707
Filing Date: 2016-06-14
CPC Classification: G01R

Claim Text:
1. A reflectometer for use in measuring scattering (S-) parameters for a device under test (DUT), comprising: a test port configured to receive signals and selectively transmit signals; a first signal source selectively connectable with the test port and configured to provide a radio frequency (RF) output signal to the test port; and a second signal source configured to provide a local oscillator (LO) signal to downconvert one or both of a received signal to a reflected intermediate frequency (IF) signal and the RF output signal to an incident IF signal; wherein when the reflectometer is used as a master reflectometer with a slave reflectometer, the reflectometer provides the slave reflectometer with a synchronization signal to phase synchronize signals generated by the slave reflectometer to the incident IF signal; and wherein both phase and magnitude of an S21 parameter of the DUT are measurable at the reflectometer when the reflectometer is used as the master reflectometer in combination with the slave reflectometer.