Ultra-narrow bandwidth radio frequency communications link
US7639734B2 · kind B2 · utility
2Cited by
5References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 8, 2006 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jul 21, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L1/022
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention is a dramatically enhanced RF link for low-data-rate applications (1-100 bps), using one or more transmitters to communicate with one or more receivers, at dramatically enhanced ranges. The receiver of the present invention can rapidly search, detect, and lock in on narrow band signal transmissions, that may be present in a much larger frequency band and which may be changing frequency during the duration of the message. These receivers enable ultra-low noise floor detection of longer range, more highly attenuated, signal transmissions, by decreasing the receiver bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.