Dynamically reconfigurable frequency selective attenuator for radio frequency receiver front end

A method of linearizing a frequency selective attenuator of a wireless device, comprising:

• detecting presence of a blocker signal;
• activating a frequency selective attenuator and programming a capacitor of the frequency selective attenuator to reduce a strength of the blocker signal;
• determining a frequency difference between the blocker signal and a receive frequency;
• and
• when the frequency difference is no more than an attenuation threshold, coupling a second capacitor to the frequency selective attenuator to linearize the frequency selective attenuator.

A wireless communication system, comprising:

• a communication packaging incorporating:
• an aggressor wireless transceiver;
• a victim wireless transceiver;
• and
• a host system interfaced with the aggressor wireless transceiver and the victim wireless transceiver;
• and
• wherein the victim wireless transceiver comprises:
• a receiver circuit coupled to a radio frequency transceiver node;
• a tunable notch filter coupled between the radio frequency transceiver node and a reference node;
• a capacitor coupled between the tunable notch filter and the reference node;
• and
• a controller that programs the tunable notch filter with a selected blocker frequency to attenuate at least one blocker signal including at least one transmission frequency of the aggressor wireless transceiver, and that programs the capacitor to linearize the tunable notch filter.