High Tuning Range Spiking 1R-1T VO 2 Voltage-Controlled Oscillator for Integrated RF and Optical Sensing

In this work we propose and experimentally validate a relaxation spiking oscillator architecture with ultrahigh tuning range (higher than 400%, from 5KHz to more than 25kHz when the control voltage is varied from 2.5 to 5V) that exploits the reversible metal-insulator transition in 2-terminal Vanadium Dioxide (VO2) thin film devices loaded to a MOSFET common source amplifier. We propose...