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. Author manuscript; available in PMC: 2010 Mar 9.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2009;2009:6387–6390. doi: 10.1109/IEMBS.2009.5333876

Table I.

Material Properties*

Material Air Saline Muscle FR4 Silicone
f [MHz] 13.56 13.56 13.56 13.56 13.56
σ [S/m] 0 0.60 0.58 1.33e-4 2.26e-6
εr 1 78 136 4.4 3.0
tan(δ) 0 10.2 6.0 0.04 0.001
*

Derived from [26] and [27].