J.T. Louhi

TL;DR: In this paper, the electron velocity saturation is modeled by limiting the velocity of the transition front between the depleted and undepleted layers, which is related to the capacitance correction factor.

TL;DR: In this article, the Schottky varactor frequency multiplier at submillimeter wavelengths can be improved by cooling the diode, and the maximum output power near 1 THz is calculated to increase by about 10 dB from 50 mu W to 500 mu W when the multiplier chain is cooled to 77 K.

TL;DR: In this paper, a new numerically derived formula for the junction capacitance of a small circular diode is presented, where the correction factor due to the edge effect of the charged anode is calculated using numerical methods.

TL;DR: In this paper, the Schottky varactor frequency multipliers are used to generate the all-solid-state local oscillator power at submillimeter wavelengths, and an optimization of the epitaxial layer thickness and doping density and the anode area significantly increases the maximum theoretical output power at the THz range.

TL;DR: In this article, a superconducting tunnel junction has been chosen as mixer element and special care has been taken in developing the calibration unit of the system for ground-based measurements of various minor constituents of the stratosphere involved in ozone chemistry.