Method and device for phase calibration with active load modulation
US10019608B2 · kind B2 · utility
3Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2015 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Dec 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0067
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for operating an RFID device is disclosed. In the embodiment, the method involves establishing a radio-frequency link, receiving signal samples of the radio-frequency link, determining the offset of an initial phase of the link by filtering noise from the signal samples, windowing the filtered signal samples, and calculating an offset value from phase differences between the windows of signal samples, and modifying a configuration profile based on the offset value. During data transmission the configuration profile can be used to configure the transmitter in order to maintain the constant phase during transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.