Saw Passive Multi-Sensor System: Status And Future Opportunities

Over the past 15 years, our group has been developing passive wireless multi-sensor systems based on surface acoustic wave (SAW) encoded delay line sensors. The work has been principally developed through NASA SBIR/STTR programs, NASA developmental contracts, and NASA graduate fellowships. This period of effort has resulted in the development of orthogonal frequency coded RFID sensor devices, specialized transceiver (reader) technology, and adaptive filter correlator post processing techniques. Operational systems and devices were demonstrated from 250 MHz to 1 GHz