DocumentCode
1977265
Title
Low Noise mm-Wave Receivers
Author
Kollberg, Erik L.
Author_Institution
Onsala Space Observatory and Research Laboratory of Electronics, Chalmers University of Technology, S-412 96 Göteborg, Sweden
fYear
1980
fDate
8-12 Sept. 1980
Firstpage
38
Lastpage
47
Abstract
In this review paper coherent low noise receivers for frequencies from about 20 GHz up to a few hundred GHz are discussed. Mixers using Schottky barrier diodes, the working horses in mm-wave receivers, are described in some detail. The noise sources are identified and methods to minimize the noise of room temperature and cooled single ended mixers, as well as subharmonically pumped mixers, are related. Liquid helium-cooled ~ 4 K superconducting mixers i.e. Josephson effect mixers and superinsulator-superconductor (SIS) mixers are described. It is pointed out that SIS mixers are quite promising for future ultra low noise receivers for frequencies up to a few hundred GHz. For long mm-waves (¿ ¿ 5 mm) the liquid helium cooled maser still offers the lowest noise and some recent results are mentioned.
Keywords
Acoustical engineering; Frequency; Helium; Horses; Josephson effect; Schottky barriers; Schottky diodes; Superconducting device noise; Superconducting devices; Temperature;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1980. 10th European
Conference_Location
Warszawa, Poland
Type
conf
DOI
10.1109/EUMA.1980.332804
Filename
4131452
Link To Document