Title :
Variable-temperature microwave cryogenic noise source
Author :
Skoulachev, D.P.
Author_Institution :
Space Res. Inst. RAS, Moscow, Russia
Abstract :
A compact variable-temperature microwave cryogenic noise source was designed and tested. It works at (26, 5...40) GHz and (75...110) GHz frequency range (two outputs) with VSWR as low as 1, 1. Output temperature may be set at (100...300) K range with 1 K error. The noise source may work during 5 hours without refilling liquid nitrogen. A metal Dewar of the source has 3-liter capacity. A high performance of the noise source is due to oversized circular waveguides used between cooled absorbers and output waveguides.
Keywords :
circular waveguides; cryogenic electronics; electromagnetic wave absorption; microwave materials; Dewar; VSWR; circular waveguides; cooled absorbers; frequency 26.5 GHz to 40 GHz; frequency 75 GHz to 110 GHz; liquid nitrogen; output waveguides; temperature 100 K to 300 K; variable-temperature microwave cryogenic noise source; Cryogenics; Helium;
Conference_Titel :
Microwave & Telecommunication Technology, 2009. CriMiCo 2009. 19th International Crimean Conference
Conference_Location :
Sevastopol
Print_ISBN :
978-1-4244-4796-1
