Patent ID: 8659456

Claim:
An electronic device, comprising: a digital-to-analog converter (DAC), having a first output end and a second output end; a transmitter front-end (TX FE), having a first input end and a second input end coupled to the first and second output ends of the DAC, respectively; an amplifier, having a first input end, a second input end, a first output end, and a second output end; an analog-to-digital converter (ADC), having a first input end and a second input end coupled to the first and second output ends of the amplifier, respectively; and a swap circuitry, configured to couple the first and second output ends of the DAC to the first and second input ends of the amplifier in a normal state, respectively, and couple the first and second output ends of the DAC to the second and first input ends of the amplifier in a swapped state, respectively.