A technique has been developed for making 5-parameter measurements of whisker contacted quantum-well diodes with an HP 8510B automatic network analyzer. Special mounts with K connectors were designed to enable measurements up to 20 GHz. Several different quantum-well diodes were succesfully measured. The voltage dependent conductance and capacitance were calculated from the reflection coefficient of each device. These are the first reported 5-parameter measurements in the negative differential resistance (NDR) region of quantum-well devices.
Olga Boric, Olga Boric,
"S-parameter measurements of quantum-well devices", Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 15141Q (1 December 1990); doi: 10.1117/12.2301472; https://doi.org/10.1117/12.2301472