Delay element concept for Continuous Time Digital Signal Processing

Continuous Time Digital Signal Processing features some interesting improvements with respect to power consumption and signal quality compared to classical Discrete Time Signal Processing Systems. Signals processed in continuous time provide an improved Signal to Noise ratio and the power consumption can be reduced, due to the property that the signal is only processed when an appropriate change in the analog input signal occurs. Therefore this kind of signal processing is interesting for a wide range of applications. However, there are still some critical aspects with respect to the implementation of continuous time systems. In particular the required chip area and the power consumption of CT delay elements proposed up to now is quite large. Therefore in this contribution a new concept for continuous time delay elements will be introduced, which offers considerable improvements with respect to size and power consumption.