Differentially driven transmission line for high data rate commu

Details Differentially driven transmission line for high data rate commu Differentially driven transmission line for high data rate commu

1994-09-16

1996-06-25

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

378 4, 378 15, A61B 600

Patent

active

055304222

ABSTRACT:
A computerized tomography (CT) system includes a stationary frame and an annular rotating frame. The CT system further includes a differentially driven transmission line attached to the rotating frame and positioned around the rotating frame. The differentially driven transmission line is made up of 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 a predetermined 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 substantially adjacent to one another and respective second ends of any two consecutive segments are substantially adjacent to one another to avoid time-delay discontinuity in the modulated signal propagating therethrough. A transmission line shield is affixed to the transmission line and defines a passage for shielding the transmission line from electromagnetic radiation. A differential 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. A coupler shield is optionally provided for shielding the coupler from electromagnetic radiation.

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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