Research Interests for David A. Johns

My main area of research is analog integrated circuits with emphasis on digital communication applications and signal processing. In that past, I have been involved with oversampling, analog filters, analog and digital adaptive filters, switched-capacitor filters, phase-locked-loops, equalization, line-drivers. My present research topics are mostly related to digital communication systems and circuits. I have students investigating free-space optial links (up to 1Gb/s), high-speed (622Mb/s) over 300m of coax and twisted-pair with full-duplex operation (and hence echo cancellation), high-speed chip-to-chip communications, as well as oversampling A/D converters.

In general, my research involves significant signal processing and digital communication concepts but also a strong hardware component where things are designed, built and tested.

Journal Papers.
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