A single-eletron bandpass digital wave filter

This paper presents a sigma-delta domain bandpass digital filter built by using single-electron tunneling (SET) devices. The filter is a spatiotemporally discretized and binary quantized model of analog distributed parameter filters. The discretized and quantized model naturally has local connection structure and fault tolerance of transient device errors. Thus the filter architecture is suitable for nanoelectronic circuit implementation. We confirmed the frequency response characteristics and evaluated the fault tolerance by numerical simulation and with SET circuit simulator SIMON. The fault tolerance performance is that the filter keeps output SNR over 30 dB at the device error rate lower than 10^-4 when oversampling ratio is 2¹⁰.