Bang S. Song
Prof Emeritus, Electrical and Computer Engineering
Endowed Chair, Electrical and Computer Engineering
CMOS integrated circuits for communications, design of integrated filters, frequency synthesizers, radio frequency (RF) circuits, and analog-digital data converters, among other devices critical to wireless communications. The design of wireless devices remains one of the most dynamic of integrated circuit (IC) spheres. Systems now are converging on a generic architecture using analog front-ends and tail-ends of massive DSP engines (digital signal processors). Professor Song is well qualified to provide perspective on this trend given his expertise in CMOS integrated data converters in RF systems. Noteworthy is his work with low-spurious data converters (a key driver of this evolution), and their subsystems and enabling techniques: flash architecture, variations using interpolation, averaging, subranging, and folding. From these, pipelining arrangements are derived, combinations are evaluated based on their features, and resolution-enhancing techniques (self-trimming) can be introduced, along with improvements to dynamic linearity.
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