Quantum‐well and quantum‐barrier diodes for generating submillimeter wave power

Abstract

Abstract Quantum‐well diodes have been used for generating power at millimeter and submillimeter waves, both in negative resistance oscillators and in multipliers. In this article, we will first discuss the power versus frequency and the maximum frequency of oscillation of “ordinary” quantum‐well oscillators. Possible methods of improving the power output and the maximum frequency of oscillation will be suggested. Quantum‐well diode multipliers will also be discussed. Realizing the importance of the nonlinear capacitance for the quantumwell diode multiplier efficiency, we have investigated a quantum‐barrier diode in multiplier applications.