Reconfigurable gallium nitride (GaN) rotating coefficients FIR filter for co-site interference mitigation

An analog cancellation module including a finite impulse response (FIR) filter for use in a transceiver system, the analog cancellation module comprising:

• an input of the analog cancellation module that receives an RF input signal, the RF input signal corresponding to a transmit signal provided to a transmit path of the transceiver system;
• an output of the analog cancellation module that provides a cancellation signal to a receive path of the transceiver system to cancel transmit signal interference;
• the FIR filter including a plurality of signal paths configured to provide a synthesized frequency response corresponding to the receive path and an adder, each signal path including a respective sample-and-hold circuit and a respective multiplier configured to receive the RF input signal and provide a modulated output signal, each signal path of the plurality of signal paths receiving the clock signal according to a respective clock signal delay, each clock signal delay different from each other clock signal delay, and each multiplier of each signal path being configured to receive a respective tap coefficient signal having a respective tap coefficient delay corresponding to the clock signal delay of the signal path, and the adder being configured to receive n modulated output signals from the plurality of signal paths and combine the n modulated output signals to provide the cancellation signal;
• and
• a controller.