Super low noise cryoelectronic amplifier for radio astronomy and spectroscopy in a 21.0 - 23.0 GHz range with conversion of frequency into 0.5 - 2.5 GHz

摘要

We have realized receiving - amplifying circuits for a frequency range of 21.0 - 23.0 GHz using frequency conversion down to 1.5 GHz is put. Mixers and ultra low noise transistor amplifiers based on HEMT-transistors cooled down to low temperatures were used. The cryoelectronic ultra low noise transistor amplifier realized (amplification factor K_a = 50 dB and own noise temperature T_N = 45 K) could be used in systems of satellite and space communication, and also for the realization of spectrometric systems.