March 2015
Intermediate to advanced
476 pages
22h 5m
English
Content preview from Electromagnetic Fields in Biology and Medicine
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89Signal Design
For this example, assume that the requirements are
Target average eld strength 10 G
Target range from skin minimum 1.25cm
Target range from skin maximum 2.5cm
Target surface region 1.25 × 1.25cm (Therefore, the target region is 1.25 × 1.25 × 1.25cm
3
,
which lies 1.25cm below the skin.)
Target polarization Linear
Field modulation Amplitude only
Assume that we will start with a single coil of 5cm diameter. Surrounding the coil will be only
air. We have chosen this diameter rather loosely. The diameter of the coil is at least larger than the
target area.
We need to select how many turns of wire the coil needs, what gauge of wire to ...
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