Method and apparatus for cancelling front-end distortion

Transceiver circuitry in an integrated circuit device, the transceiver circuitry comprising:

• a receive path including:
• an analog front end configured to receive analog signals from an analog transmission path and to condition the analog signals, and
• an analog-to-digital converter configured to convert the conditioned analog signals into received digital signals for delivery to functional circuitry of the integrated circuit device;
• and
• a transmit path including:
• a digital front end configured to accept digital signals from the functional circuitry and to condition the accepted digital signals, and
• a digital-to-analog converter configured to convert the conditioned digital signals into transmission analog signals for transmission onto the analog transmission path;
• wherein:
• at least one of (a) the analog front end in the receive path, and (b) the digital front end in the transmit path, introduces distortion during signal conditioning and outputs a distorted conditioned signal in a respective one of the receive path and the transmit path;
• and
• the transceiver circuitry further comprises at least one of:
• receive path distortion correction circuitry at the analog front end, the receive path distortion correction circuitry being configured to determine and apply a receive path distortion cancellation function to cancel a distortion component from the distorted conditioned signal in the receive path prior to the delivery to the functional circuitry of the integrated circuit device, and
• transmit path distortion correction circuitry at the digital front end, the transmit path distortion correction circuitry being configured to determine and apply a transmit path distortion cancellation function to cancel a distortion component from the distorted conditioned signal in the transmit path prior to conversion of the conditioned digital signals into the transmission analog signals for transmission onto the analog transmission path.