Advanced RFIC Techniques using Non-Uniform Sampling and Time-Approximation Filters

This talk will include an overview of the recent development of using non-uniform sampling (NUS) to enable new capabilities for RF transceiver, such as non-uniform subsampling (NUSS) front end, and non-uniform discrete-time FIR (NU DT FIR) filter. Moreover, this general concept of non-uniform time signal processing can be extended to engineering the LO waveform, leading to a time-approximation filter (TAF). It has been shown that NUS and TAF can be combined to further enhance the performance, referred as NU TAF. Lastly, I will discuss the result from several silicon prototypes to evaluate their effectiveness.