Self-pumped parametric amplification and oscillation of Gunn-effect diodes

This letter describes self-pumped parametric effects resulting from the admittance variations of a domain which occur not when the domain grows near the cathode and is quenched at the anode, but when the bias voltage is varied by an RF output voltage. It is shown that a parametric change in admittance appears in a diode self-pumped by a voltage with a fundamental frequency and that additional admittance appears in a diode self-pumped by a voltage with a harmonic frequency.