SUPERCONDUCTIVE DELAY-LINE TECHNOLOGY AND APPLICATIONS.

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作者
Withers, R.S. [1 ]
Anderson, A.C. [1 ]
Green, J.B. [1 ]
Reible, S.A. [1 ]
机构
[1] MIT, Lincoln Lab, Lexington, MA, USA, MIT, Lincoln Lab, Lexington, MA, USA
关键词
ELECTRIC FILTERS; MICROWAVE - NIOBIUM AND ALLOYS - SIGNAL PROCESSING;
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摘要
Microwave analog signal-processing filters have been realized in the form of coupled niobium striplines on silicon dielectric substrates. Device responses with plus or minus 2-db amplitude accuracy and 9 degree -rms phase error have been achieved in amplitude-weighted filters with 37. 5 ns of dispersion and 2. 3-GHz bandwidths. Relative side-lobe levels of minus 26 db and less are currently obtained. The achievable dispersion for stripline circuits on a single pair of 5-cm-diameter, 125- mu m-thick wafers is limited to about 40 ns by the electromagnetic coupling between neighboring lines.
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