Interference reduction for direct conversion receivers

A method for compensating direct current (DC) offset signals induced in an electronic circuit, comprising the steps of:

• detecting a communication signal in an electronic circuit;
• determining if an interferor signal component resides in the detected communication signal;
• generating a compensating signal that corresponds to a DC offset signal associated with the interferor signal;
• and
• combining the compensating signal with an output signal of the electronic circuit so that the DC offset signal is reduced.

A system for compensating direct current (DC) offset signals induced in an electronic circuit, comprising:

• means for detecting a communication signal in the electronic circuit;
• means for determining if an interferor signal component resides in the detected communication signal;
• means for generating a compensating signal that corresponds to a DC offset signal associated with the interferor signal;
• and
• means for combining the compensating signal with an output signal of the electronic circuit so that the DC offset signal is reduced.

A system for compensating direct current (DC) offset signals induced in electronic circuits, comprising:

• a wireless communication device having an electronic circuit configured to mix a received radio frequency (RF) communication signal with a local oscillator signal;
• a detector configured to detect the RF communication signal, the detector coupled to the electronic circuit and configured to generate a detect signal when an interferor signal component residing in the RF communication signal is detected;
• a controller coupled to the detector and configured to generate a control signal upon receiving the detect signal from the detector;
• and
• a correction generator coupled to an output of the electronic circuit, the correction generator configured to add a compensation signal to an output signal from the electronic circuit upon receiving the control signal from the controller, such that a DC offset signal component residing in the output signal of the electronic circuit, the DC offset signal component being associated with the interferor signal, is reduced.