Patent ID: 8301103

Claim:
Method for demodulating a radio frequency (RF) input signal to a demodulated output signal comprising: receiving the RF input signal; providing a first clock signal having a first reference period and a first signaling period and a first clock frequency, and applying the first clock signal to a first switching block; switching in the first switching block to the RF input signal during the first signaling period and to a reference signal during the first reference period, thereby creating a first signal; demodulating the first signal by an RF front end comprising an envelope detector, the RF front end having a non-linear transfer-characteristic, thereby creating a second signal; providing a second clock signal having a second reference period and a second signaling period and a second clock frequency equal to the first clock frequency, and applying the second clock signal to a second switching and compensation block; sampling the second signal in the second switching and compensation block so as to store a first sample of the second signal during the second signaling period and to store a second sample of the second signal during the second reference period; and compensating the first sample by the second sample to obtain the demodulated output signal.