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13C double-sided racetrack coil. (a) 30-finger side or front side. This side has two non-overlapping fingers with the other side, sketched in yellow. (b) 28-finger side or back side. (c) Each finger consists of six fingerlets. A and B show the trace width and the mean width, respectively. L shows the ending gap size for innermost finger. Dashed lines determine the symmetry plane passing through the midpoints of the fingers.
