Phase synchronization of measuring instruments using free space transmission
US10003453B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2017 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Jun 2, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0008
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for measuring electrical characteristics of a device under test (DUT) includes a measuring instrument adapted to be connected with the DUT for transmitting tests signals to the DUT, a receiver adapted to be connected with the DUT and arranged remote from the measuring instrument, an optical transceiver having a first coupler electrically connectable with the measuring instrument and a second coupler electrically connectable with the receiver, and a first and second free space transceivers connected to respective couplers by fiber optic cable. The measuring instrument includes a clock signal generated from a synchronization signal. The synchronization signal is converted to an optical signal by the optical transceiver and transmitted from the first free space transceiver to the second free space transceiver. The second coupler converts the optical signal to the synchronization signal and a clock signal of the receiver is locked to the synchronization signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.