Abstract
Uniform sampling has been widely adopted in today's circuit designs, ranging from data converters (ADC and DAC), and discrete-time signal processing (such as switched-capacitor filters). It is a welldeveloped processing technique that leads to many circuit architectures. However, Nyquist theory does not limit us to processing the samples in a strictly uniform time grid so long as the average sample rate is sufficiently high, i.e., no loss of signal information. Why not sample the analog signal in a non-uniform time grid? What is the benefit by doing so? What is the underlying signal processing implication? In this talk, I will provide a background overview and explore new opportunities in nonuniform sampling (NUS) along with different ADC architectures that leveraged non-uniform sampling. In addition, I will show how NUS can be extended beyond an ADC and enable a different direction for a receiver design. Thanks to the unique properties of NUS, there are interesting possibilities for uncharted circuit and system design directions.
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