Resumes
Resumes
Seiji Unno Phones & Addresses
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761 Fairlane Ave, Santa Clara, CA 95051
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2584 Pebble Beach Dr, Santa Clara, CA 95051
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San Mateo, CA
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Sunnyvale, CA
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Belmont, CA
Work
Position:
Building and Grounds Cleaning and Maintenance Occupations
Education
Degree:
Associate degree or higher
Publications
Us Patents
Multiple Tuned Birdcage Coils
View pageUS Patent:
6420871, Jul 16, 2002
Filed:
Mar 2, 2001
Appl. No.:
09/798322
Inventors:
Wai Ha Wong - San Jose CA
Seiji Unno - Santa Clara CA
Weston A. Anderson - Palo Alto CA
Seiji Unno - Santa Clara CA
Weston A. Anderson - Palo Alto CA
Assignee:
Varian, Inc. - Palo Alto CA
International Classification:
G01V 300
US Classification:
324318, 324320, 324322
Abstract:
A multiple tuned birdcage coil structure has a plurality of birdcage coils arranged coaxially one inside another around a central axis. Each of the birdcage coils has two conductor rings separated along the central axis and a plurality of mutually separated and parallel linearly elongated conductor legs and generates B field which rotates around the central axis by a specified twist angle between the two rings. The twist angles of different ones of these birdcage coils are different by an integral multiple of 360 degrees such that the assembled birdcage coils are mutually inductively transparent. Such a multiple tuned birdcage coil structure may be formed by assembling individually prepared single tuned birdcage coils each having a specified twist angle with a cylindrically shaped insulating bodies in between. A double tuned birdcage coil structure with two birdcage coils may be produced by providing a single printed circuit substrate with metallic sheets laminated on an insulating sheet, etching the metallic sheets to form appropriate patterns, rolling the substrate into a cylindrical form and soldering together appropriate portions of ring-forming parts to form conductor rings directly connected to or capacitively coupled to spirally birdcage legs.