An automatic DC-Offset cancellation method and circuit for RF transceivers

This paper presents a novel low-cost automatic DC-Offset cancellation method and circuit for DAC in RF transmitter. The automatic DC-Offset cancellation block consists of one voltage comparator, one 5-bit R-2R auxiliary DAC and a SAR digital block. The proposed DC-Offset cancellation works during power-on sequence, then stores the value of control word in… CONTINUE READING