Progress Report of the 22 GHz RADIOASTRON Receiver: Development of Prototype Components during the Year 1988

摘要

The progress made in the 22 GHz low-noise Radioastron receiver project during the year 1988 is described. A receiver for satellite VLBI radio astronomy is being designed and constructed. The LNA utilizing HEMTs will be cooled to 80 K, the other parts of the receiver including a phase-locked LO at 21.72 GHz, down-conversion to 512 MHz IF, total power detector and noise injection calibration system stay at 300 K physical temperature.