Asymmetrical conductance model to analyze resonant tunneling diode terahertz oscillators

A simple expression for the conductance-voltage characteristics of resonant tunneling diodes (RTD) is presented, which takes the asymmetry of the measured characteristics into account. It allows for a simple and accurate analysis of RTD-based oscillators to optimize them. Moreover, the dynamic capacitance of an RTD oscillator is calculated in order to describe its oscillation frequency. The measured oscillation power and frequency accurately can be described using the presented model and analysis without the need of a circuit simulator.