Devices, systems, and methods for sychronizing a remote receiver to a master signal for measuring scattering parameters
US9733289B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2013 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Sep 5, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reflectometer for use in measuring scattering (S-)parameters for a device under test (DUT) includes a test port, a radio frequency (RF) output signal source, and a local oscillator (LO) signal. The LO signal is used to downconvert the RF output signal to an incident IF signal. The reflectometer is useable as a first reflectometer with a second reflectometer such that the first and second reflectometers are phase synchronized by a synchronization signal. Phase and magnitude of transmission S-parameters of the DUT are measurable when the first reflectometer is used with the second reflectometer. The roles of the first and second reflectometers are reversible to allow for measurement of forward and reverse parameters. Further, the synchronization signal can be provided by one reflectometer to the other (or both can receive a separately generated synchronization signal) via a wire or fiber optic cable, for example, or via a wireless connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.