Title :
Very low noise mixer at 115 GHz using a Mott diode cooled to 20 K
Author :
Keen, Nigel ; Haas, Robert ; Perchtold, Eduard
Author_Institution :
Max-Planck-Institut fÿr Radioastronomie, Bonn, West Germany
Abstract :
Measurements on a cooled resistive mixer are reported using a Mott-barrier diode cooled to 20 K, operating at 115 GHz and pumped with a local oscillator power as low as 150 ¿W. The mixer noise temperature of 200 K is not only the lowest reported for a resistive mixer above 90 GHz but indicates that some improvement in shot-noise models for resistive mixers is desirable.
Keywords :
mixers (circuits); semiconductor diodes; solid-state microwave circuits; 115 GHz; Mott diode; resistive mixer; very low noise mixers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19780558
