Detection and mitigation of interference based on interference location

An apparatus comprising:

• a first processing module and a second processing module configured to receive a first input signal and a second input signal, respectively, each processing module including:
• an amplifier configured to amplify the input signal of said processing module;
• a local oscillator configured to generate an oscillator signal;
• a mixer coupled to the amplifier and configured to mix the amplified input signal outputted by the amplifier with the oscillator signal;
• a baseband filter configured to filter an output of the mixer to pass a band of frequencies;
• and
• a logic module coupled to the first and second processing modules, the logic module including:
• an interference frequency detection (IFD) module coupled to an output of the baseband filter of the second processing module directly or via one or more intermediate components, the IFD module configured to:
• detect whether an interference signal is at a higher frequency or a lower frequency than an output of the baseband filter of the second processing module, and
• provide an IFD output signal indicative of the detection result;
• and
• a state machine coupled to the IFD module and to the local oscillator of the first processing module, the state machine configured to provide a feedback signal to the local oscillator of the first processing module, based on the IFD output signal, to cause the local oscillator of the first processing module to update the corresponding oscillator signal so that the amplified input signal of the first processing module, when mixed with the updated oscillator signal, is not located at a frequency band of the interference signal.

A method comprising:

• amplifying an input signal to provide an amplified input signal;
• generating an oscillator signal;
• mixing the amplified input signal with the oscillator signal, to provide a mixed signal;
• filtering the mixed signal to pass a band of frequencies, to provide a filtered signal;
• detecting, based on the filtered signal, a relative frequency location of an interference signal;
• generating a feedback signal based on the detected relative frequency location, and
• updating the oscillator signal based on the feedback signal so that the amplified input signal, when mixed with the updated oscillator signal, is not located at a frequency band of the interference signal.

A method comprising:

• receiving first and second input signals from a first antenna and a second antenna, respectively;
• amplifying the first and second input signals to provide first and second amplified input signals, respectively;
• generating first and second oscillator signals;
• mixing the first and second amplified input signals with the first and second oscillator signals, respectively, to provide first and second mixed signals;
• filtering the first and second mixed signals to pass a band of frequencies, to provide first and second filtered signals, respectively;
• detecting, based on the second filtered signal, a relative frequency location of an interference signal;
• generating a feedback signal based on the detected relative frequency location, and
• updating the first oscillator signal based on the feedback signal so that the first amplified input signal, when mixed with the updated first oscillator signal, is not located at a frequency band of the interference signal.