Method and system for performing distance measuring and direction finding using ultrawide bandwidth transmissions
US7346120B2 · kind B2 · utility
39Cited by
15References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2002 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An identification tag is provided in which radio frequency (RF) circuitry and ultrawide bandwidth (UWB) circuitry are both provided on the same tag, along with some UWB-RF interface circuitry. The RF circuitry is used to detect when the identification tag must be accessed, and is used to connect the UWB circuitry with a power supply. The UWB circuitry then performs the necessary communication functions with a distant device and the power supply is again disconnected. In this way the power supply is only accessed when the UWB circuitry is needed and it's usable lifetime can be maximized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.