System and method for optimizing intermodulation performance of receivers

A method for mitigating Intermodulation (“IM”) interference, comprising:

• monitoring performance of at least one demodulator of a communication device;
• detecting when the communication device is under or will be under an influence of IM interference based on a performance of the at least one demodulator;
• determining an improved level of gain to be applied to (i) a variable attenuator of the communication device or (ii) a variable gain low noise amplifier of the communication device;
• selectively adjusting an amount of gain being applied by the variable attenuator or variable gain low noise amplifier based on the improved level of attenuation;
• operating a primary receiver in accordance with a given gain setting;
• and
• operating a secondary receiver with a lower linearity as compared to a linearity of the primary receiver.

A method for mitigating Intermodulation (“IM”) interference, comprising:

• monitoring performance of at least one demodulator of a communication device;
• detecting when the communication device is under or will be under an influence of IM interference based on a performance of the at least one demodulator;
• determining an improved level of gain to be applied to (i) a variable attenuator of the communication device or (ii) a variable gain low noise amplifier of the communication device;
• selectively adjusting an amount of gain being applied by the variable attenuator or variable gain low noise amplifier based on the improved level of attenuation operating a primary receiver in accordance with a given gain setting;
• and
• subsequently lowering the linearity of the primary receiver to obtain an apparent secondary receiver.

A communication device, comprising:

• a first receiver comprising a demodulator;
• and
• a control circuit configured to:
• monitor performance of the demodulator;
• detect when the communication device is under or will be under an influence of IM interference based on a performance of the demodulator;
• determine an improved level of gain to be applied to a variable gain device;
• and
• selectively adjust an amount of gain being applied by the variable gain device based on the improved level of attenuation;
• cause the first receiver to operate in accordance with a first gain setting;
• and
• cause a second receiver to operate in accordance with a second gain setting different from the first gain setting.

A communication device, comprising:

• a first receiver comprising a demodulator;
• and
• a control circuit configured to:
• monitor performance of the demodulator;
• detect when the communication device is under or will be under an influence of IM interference based on a performance of the demodulator;
• determine an improved level of gain to be applied to a variable gain device;
• and
• selectively adjust an amount of gain being applied by the variable gain device based on the improved level of attenuation;
• wherein the control circuit is further configured to:
• cause a primary receiver to operate in accordance with a given gain setting;
• and
• cause a secondary receiver to operate which has a lower linearity as compared to a linearity of the primary receiver.