Nonlinear dynamics in frequency divider RTD circuits

A novel and extremely compact circuit topology able to implement a selectable frequency divider using the period-adding sequences which appear in the bifurcation diagram for the circuit is presented. It is based on resonant tunnelling devices (RTDs), so allowing very high operating frequency and a low power consumption. Compared to a previous similar reported circuit, it has wider operation windows, narrower chaos regions and a higher division factor.