A non-coherent versatile DPSK receiver for high channel-density neural prosthesis

A non-coherent versatile DPSK receiver for high channel-density neural prosthesis is presented. Detailed analyses on the non-idealities in realistic DPSK demodulation require a more adaptable DPSK receiver to ensure robust data recovery. New features such as tunable threshold voltage, area-efficient switched-capacitor array and flexible digital control are incorporated into the design. At a coil separation of 16mm, the receiver achieves a bit error rate of 2e-7 at a data rate of 2Mbps with a power consumption of 5.4mW.