Demodulators for near field communication, near field communication cation - devices, and electronic devices which have such

摘要

A demodulator for near field - communication can comprise: a scale - down - circuit, which is configured to receive a first modulated signal and a second modulated signal of in each case a first power electrode and a second power electrode, and is configured to provide a down cabled conductors - signal to a first node, by scaling down of a size of the first modulated signal and a size of the second modulated signal; a current source, which between the first node and a ground voltage is connected, and is configured to generate a constant current, of the of the first node to the ground voltage; a charge storage device - circuit, which between the first node and the ground voltage is coupled, and is configured for the alternate carrying out a charging process and a discharging process, based on the down cabled conductors - signal and the constant current, in order by the first node an envelope signal output of an envelope of the down cabled conductors - signal; and / or an edge - detector, which is configured to generate of input data, the the first modulated signal and the second modulated signal, based on a transition of the envelope signal.