Radiation shielded apparatus for high data rate communication in

Details Radiation shielded apparatus for high data rate communication in Radiation shielded apparatus for high data rate communication in

1994-09-16

1996-06-25

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

378 4, 378 15, A61B 600

Patent

active

055304257

ABSTRACT:
A computerized tomography (CT) system having a stationary frame and an annular rotating frame is provided. The CT system includes a transmission line attached to the rotating frame and positioned around the rotating frame. The transmission line comprises individual segments each having a respective first end and a respective second end and having a respective electrical length chosen so that a modulated signal simultaneously applied at each respective first end has, for example, a substantially similar time-delay upon arrival at each respective second end. The individual segments are arranged so that respective first ends of any two consecutive segments are adjacent to one another and respective second ends of any two consecutive segments are adjacent to one another to avoid time-delay discontinuity in the modulated signal propagating therethrough. The CT system further comprises a U-shaped shield affixed to the transmission line for shielding the transmission line from electromagnetic radiation and for defining a passage around the rotating frame. A coupler is attached to the stationary frame and is positioned in the passage sufficiently near the transmission line for establishing radio coupling therebetween so as to receive the modulated signal being applied to the respective individual segments.

REFERENCES:
patent: 4651338 (1987-03-01), Hahn
patent: 5140696 (1992-08-01), Fox
patent: 5157393 (1992-10-01), Fox et al.
patent: 5208581 (1993-05-01), Collins
patent: 5229871 (1993-07-01), Czarnek et al.
patent: 5287117 (1994-02-01), Posluszny

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