Active load modulation antenna
US9331378B2 · kind B2 · utility
29Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2012 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Oct 18, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49016
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Active load modulation antennas for contactless systems typically require the presence of a battery power source in the transponder device. The transponder typically cannot be powered by the reader device alone and also transmit an active load modulation signal. Embodiments in accordance with the invention are disclosed that allow transponder devices to transmit an active load modulation signal when powered only by the reader in the contactless system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.