DocumentCode
904768
Title
Low-Noise Microwave Down-Converter with Optimum Matching at Idle Frequencies (Short papers)
Author
Stracca, G.B. ; Aspesi, F. ; D´Arcangelo, T.
Volume
21
Issue
8
fYear
1973
fDate
8/1/1973 12:00:00 AM
Firstpage
544
Lastpage
547
Abstract
A low-noise balanced down-converter for microwave radio-link applications is described. Down-converters of this type have been realized with typical noise figures of 3.5 dB at 4 GHz, 4 dB at 7 GHz, and 5 dB at 13 GHz. These results are obtained mainly by taking into account high order sideband frequencies of the pump harmonics up to the third, by properly terminating the image frequency, by matching the input port of the mixer and by optimizing the mixer-preamplifier interface. The experimental results are compared with the theoretical ones obtainable with ideal purely resistive diodes.
Keywords
Cooling; Copper; Dielectric losses; Electromagnetic heating; Ferrites; Frequency; Insertion loss; Phase shifters; Rectangular waveguides; Slabs;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/TMTT.1973.1128056
Filename
1128056
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