Antennas for object identifiers in location systems
US7443300B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2005 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Oct 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Transmitters or object identifiers are discloses that are able to radiate consistent power regardless of the object where the transmitters or object identifiers are placed. The transmitter or object identifier may include a vertical loop antenna. The loop plane of the vertical loop antenna is substantially perpendicular to the surface of the object where the transmitter or object identifier is placed. The transmitter or object identifier may include a folded vertical loop antenna where the loop plane of the vertical loop antenna is extended and folded to have additional loop planes. The antennas of the present invention enable the transmitter or object identifier to radiate consistent power regardless of the object where the transmitter or object identifier is placed and regardless of the orientation of the transmitter or object identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.