Abstract:
As future wireless systems with advanced CMOS technology demand not only low-power but also low-voltage design, matching and linearity problems have become more critical than ever. The ΔΣ modulation technique enables robust mixed-signal design but still requires careful design over nonlinearity when a multi-bit ΔΣ quantizer is used. This talk discusses an extensive use of a 1-bit ΔΣ modulation method to build robust communication systems by mitigating the nonlinearity problem. In this talk, four examples of modulation and transceiver systems which utilize the 1-bit modulation/conversion schemes are introduced, including two-point modulation without DCO nonlinearity calibration, SSCG/FMCW modulation based on the BBPLL, and phase-domain receivers with 1-bit noise-shaping demodulation, and time-of-flight (TOF) ranging transceivers with the 1-bit ΔΣ PDC..