DocumentCode
877619
Title
A Wide-Band UHF Traveling-Wave Variable Reactance Amplifier
Volume
8
Issue
3
fYear
1960
fDate
5/1/1960 12:00:00 AM
Firstpage
351
Lastpage
361
Abstract
The techniques developed for designing periodically loaded traveling-wave parametric amplifiers using variable-reactance diodes are described in detail. An amplifier was built and tested with two different sets of eight diodes. The performance of the amplifier with each set of diodes agrees substantially with the theoretical predictions, the measured noise figures being about 1.2 db higher than the theoretical values in each case. The gain of the second amplifier varied from a minimum of 6.7 db to more than 13 db over the band from 550 to 930 mc, with a measured noise figure of 2.3 db for wide-band noise inputs in the middle of the band, corresponding to about 4.9 db for single-frequency inputs.
Keywords
Broadband amplifiers; Diodes; Distributed parameter circuits; Eigenvalues and eigenfunctions; Inspection; Microwave amplifiers; Noise figure; Noise measurement; Propagation losses; Transmission line theory;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IRE Transactions on
Publisher
ieee
ISSN
0097-2002
Type
jour
DOI
10.1109/TMTT.1960.1125245
Filename
1125245
Link To Document