Current-Starved Chaotic Oscillator Over Multiple Frequency Decades on Low-Cost CMOS : Towards Distributed and Scalable Environmental Sensing with a Myriad of Nodes

This work presents a current-starved cross-coupled chaotic oscillator achieving multiple decades of oscillation frequency spanning 2 kHz to 15 MHz. The main circuit characteristics are low-power consumption (<100 nW to 25 μW, at 1 V supply voltage), and controllability of the oscillation frequency, enabling future applications such as in distributed environmental sensing. The IC was implemented in 180 nm standard CMOS process, yielding a core area of 0.028 mm
²
.