Patent ID: 7929936

Claim:
A receiver arrangement with AC coupling, comprising: an input of the receiver arrangement configured to receive a radio-frequency signal; a frequency converter which is coupled to the input of the receiver arrangement and produces a baseband signal at its output; a baseband amplifier with variable gain, which is connected to the output of the frequency converter and has a control input for varying the gain; a filter arrangement for AC coupling, with an input which is connected to an output of the baseband amplifier and with a high-pass filter for filtering the baseband signal, with a cut-off frequency which can be switched between at least two values, with the lower of the at least two cut-off frequencies being used during normal operation and with the higher of the at least two cut-off frequencies being used in a changeover mode, and with a control input for varying the cut-off frequency; and a control circuit for activation of the higher cut-off frequency during the changeover mode on the basis of a readjustment of the gain of the baseband amplifier, with an output which is connected to the control inputs of the baseband amplifier and of the filter arrangement, wherein the control circuit is configured to activate the higher cut-off frequency in the high-pass filter of the filter arrangement during a variable time interval, which starts at the time of the change to the gain of the baseband amplifier on the basis of the readjustment of the gain.