Shield-type coaxial vacuum feedthrough
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United States of America Patent
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-
Oct 28, 1980
Grant Date -
N/A
app pub date -
Dec 20, 1978
filing date -
Dec 21, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shield-type coaxial vacuum feedthrough for connecting an external wire tolectric equipment inside a vacuum vessel, comprising a metal pin in the shape of a metal round bar, a ceramic cylinder enclosing the metal pin and a metal cylinder enclosing the ceramic cylinder, with the ceramic cylinder being partly enlarged in diameter so as to peripherally contact and fix itself to the metal cylinder, and the metal pin being reduced in diameter in that part corresponding to the enlarged part of the ceramic cylinder. Thereby, the matching of characteristic impedance can be secured even in the high-frequency region such as microwaves thereby allowing high-accuracy experiments and insuring strong endurance during the baking of the vacuum vessel.
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