Antenna structure, for different range communication modes
US11158926B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2018 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | May 1, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides an antenna structure comprising a plurality of wire segments formed in a loop. Connecting units are provided between the wire segments, each of which is switchable between a conductive state and a reactive state. With the connecting units in the conductive state a loop antenna is formed with a first (longer) signal range and with the connecting units in the reactive state an antenna structure is formed with a second (shorter) signal range. Said reactive state is adapted to introduce a phase delay between the adjacent wire segments. This enables the same antenna to be used for long range signal communication and short range communication, for example for system configuration or commissioning. The antenna structure may be used with luminaires of a lighting system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.