Method for compensating for a phase shift between the signal emitted by an object and that received from a reader equipped with an envelope detector and corresponding object
US11100299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Apr 22, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/21
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An operation of calibrating the object using a reference reader is performed, the calibration operation including an operation of placing the reference reader at various distances away from the object that correspond to various values of a parameter within the object that is representative of the intensity of the signal received by the object, and, for each distance, an operation of determining an internal phase-shift compensation in the object with respect to a nominal internal phase shift, making it possible to obtain a load modulation amplitude that is higher, in terms of absolute value, than a threshold, and an operation of storing a lookup table of the various values of the parameter and the corresponding internal phase-shift compensations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.