We present a Van Der Pol (VDP) oscillator which is composed of a negative-differential-resistance (NDR) circuit, an inductor, and a capacitor. The core NDR circuit consists of five Si-based metal-oxide-semiconductor field-effect transistor (MOS) devices and one SiGe-based heterojunction bipolar transistor (HBT) device. When an external periodic signal is inputted in such circuit, it outputs various kinds of signal waveforms including the chaos signals and bifurcation sequences. A frequency divider circuit is designed using the long-period behavior of the nonlinear NDR circuits generating chaos. It demonstrates the period-adding sequences which appear in its bifurcation diagram to perform the frequency division. This circuit is designed and implemented based on a standard 0.18mm BiCMOS technique.

Van Der Pol oscillator, chaos signal, bifurcation sequence, dynamic frequency divider, 0.18mm BiCMOS technique.