| CPC H04B 5/40 (2024.01) | 8 Claims |
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1. A receiver configured to be exposed to a magnetic field with a specified carrier frequency and built to extract an internal clock signal for processing of data with a receiver IC of the receiver, which receiver comprises:
an antenna built to receive an antenna signal and a tuning circuit and built to provide a first received signal at a first pin of the receiver IC and a second receiver signal at a second pin of the receiver IC, which receiver IC comprises:
a harvesting stage built to rectify a differential received signal provided between the first pin and the second pin of the receiver IC and built to provide a supply voltage referenced to a ground potential for the receiver IC; and
a clock extraction stage built to provide a first threshold level to switch the internal clock signal with a rectangular signal shape between high and low potential, wherein the clock extraction stage is built to provide a second threshold level and to provide a low threshold level, which is closer to ground potential than the first threshold level and the second threshold level, which clock extraction stage is built to switch the internal clock signal from low potential to high potential, if a voltage of the first received signal referenced to ground potential is above or passes above the first threshold level and a voltage of the second received signal referenced to ground potential is below or passes below the low threshold level and, which clock extraction stage is built to switch the internal clock signal from high potential to low potential, if the voltage of the first received signal referenced to ground potential is below or passes below the low threshold level and the voltage of the second received signal referenced to ground potential is above or passes above the second threshold level.
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