High dynamic range NFC reader mode receiver

A communication system comprising:

• a transmitter circuit configured to transmit a carrier signal to a passive device via an antenna circuit;
• and
• a receiver circuit configured to receive tag data from the passive device, the receiver circuit comprising:
• an adder circuit coupled to the antenna circuit and configured to produce a first signal by adding a receive (RX) signal with a second signal;
• a mixer configured to mix the first signal with the carrier signal to generate a baseband signal;
• and
• a phase processing circuit configured to process the carrier signal to generate the second signal that comprises an inverted carrier signal.

A method comprising:

• receiving, by a transceiver device, a first signal from a first communication device;
• inverting, using an inverter circuit, a clock signal to generate an inverted clock signal;
• adjusting a phase of the inverted clock signal to generate a second signal, wherein the second signal comprises an inverted carrier signal;
• summing the first signal and the second signal to produce a receive (RX) signal;
• and
• mixing the RX signal with the clock signal to generate a baseband signal,
• wherein the first signal is produced by the first communication device by modulating with data the clock signal received from the transceiver device.