Passive photonic dense wavelength-division multiplexing true-time-delay system
US8400355B1 · kind B1 · utility
14Cited by
11References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 2009 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Apr 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/2682
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A photonic true time delay system for steering one or more radio frequency beams from an electronically scanned array antenna incorporates passive optical true time delay modules for the entire array based upon dense-wavelength-division multiplexed encoding of optical time delays. In addition, electronic selection of time delays allows for elimination of optical filter tuning and optical switching, and can function in either or both transmit and receive modes of the antenna array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.