Adjustable length antenna system for RF transponders
US6535175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/285
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides an RF tag having an antenna that can be selectively tuned to achieve optimal performance. The RF tag comprises an RF transponder integrated circuit and an antenna connected to the RF transponder integrated circuit. The antenna includes components such as tuning stubs and loading bars that are physically alterable to selectively vary the performance characteristics of the antenna. The tuning stub and loading bar may each further comprising a variably selectable length having elements that may be removed by punching, cutting, etching, laser trimming or other process. The antenna may further comprise a leadframe or a flexible substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.