Receiver for a telecommunications system
US8879988B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2012 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | May 14, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/45
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus in a near-field communication system, in which a modulated signal received in a Reader is clipped by applying upper and lower clip levels. After clipping, the modulated part of the signal corresponds to a greater portion of the overall signal, and thus the requirements placed on an analog-to-digital converter for the clipped signal are reduced. In a first mode of operation, prior to or at the start of reception of the load-modulated signal, the clip levels may be set in a feedforward manner on the basis of preset values or a detected change in the overall signal; in a second mode of operation, once the clipped signal is available, the clip levels may be set in a feedback manner on the basis of the clipped signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.