Research

General Interests

• Low Power Circuits and Architectures
• Energy Harvesting Systems and Transducers
• Subthreshold Analog Circuit Design
• High Efficiency ADC Design
• Free Space Optical Communication
• Transdermal Bio Sensing
• Variation Aware Algorithms for Weak Inversion Operation
• Interconnect Designs

Current Projects

Variation Aware Calibration Algorithm for Circuits Operating in Weak Inversion

• Calibration of a delta sigma modulator
• Circuit design and calibration to minimize variation for low voltage analog circuits

Subdermal Bio-Sensor Powered by Free Space Optics

• Circuit topology examination
• Communication topology examination
• Power budgeting

Past Works

Ultra Low Voltage Circuits for Sensor Applications Powered by Free Space Optics

• Efficient delta sigma modulator
• Subthreshold clock data recovery
• Optical energy harvesting transducers for power and data

Integrated Solar Energy Harvesting and Storage

• Characterization of Integrated Solar Cells
• Examination of circuit topologies which fit in power budget created by the PV cells
• Free space optical communication and power link
• LED control with frequency adjustment and dimming via an MSP430

Chip Gallery

23fJ/b 100nW 8bit Delta Sigma Modulator

200kbps 300mV Subthreshold Clock Data Recovery Circuit

Low Voltage Sensor Platform Powered and Programmed by Free Space Optical Signals

Integrated Solar Photodiodes