Advanced Sensor and Communication Circuit and Systems
Silicon on Sapphire Ultra Wideband (UWB) Communication Circuits
We have developed a RF front-end for an UWB transmitter that can operate with sub milli-watt of power at multi-megabit rates and at micro-watts of power for kilohertz data rates. This device can be used for body area networks and sensor networks. The device uses the SOS process to optimize its operation at high-speeds and low-power consumption.
We implemented a wireless transmission system in order to characterize the pulse-radio performance. With the Graphic User Interface, a visitor may choose a file (either text, image or video) in the computer, then send the file using the UWB pulse radio system and receive it back. You can download the video of our demo: description and operation
Low Noise Amplifier with Asynchronous Sigma-Delta Converter
We developed a low-power pulse-based amplifier and data conversion circuit for recording bio-potentials. The circuit is designed for data reduction in neurophysiological sensor and communication systems. A low-power low-noise AC amplifier with an asynchronous delta A/D converter is implemented. The asynchronous delta modulation has the advantage of data reduction, clock-less and no quantization noise.
A graphic user interface was developed to monitor the transmitted signal in real time. The system provides remarkable data reduction, clock-less A/D conversion and low power consumption. This design is a transformative solution in neural recording system
Please check our publications for the details of these projects