Automatic delay calibration and tracking for ultra-wideband antenna array
US7925251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Feb 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining changes in internal delays of RF units, the RF units including a plurality of receivers and transmitters. The method includes providing initial direct signals' time of arrivals of the RF units initial internal delays of the RF units. Following this, each transmitter transmitting a direct signal, and the real-time direct signal's time of arrivals of the RF units, are measured. Then, changes in internal delays of the RF units are calculated based on the real-time direct signals' time of arrivals and initial direct signals' time of arrivals. And finally, real-time internal delays of the RF units are calculated based on the changes in internal delays and the initial internal delays of the RF units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.