E-Field Distribution in Ex-Vivo Porcine Skin Layer from a Subsurface UHF Transmitter
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Salchak, Yana A
Thiel, David V
Espinosa, Hugo G
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Copenhagen, Denmark
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Abstract
A tuned small slot antenna has been used for radio communications with internal transceivers/transmitters for invivo medical applications. The 2.45 GHz properties (permittivity and conductivity) shows that porcine skin tissue can be used as a substitute for human skin tissue in medical applications. In this study, a measure of the E-field distribution on the skin surface of human and porcine tissue is presented. Ex vivo measurements on boneless layered pork belly-fat (45mm thick 300mm x 150 mm sample of skin, fat and muscle) were compared with numerical modelling for a subdermal PIFA tuned antenna. The surface electric field distribution is quite well matched to an analytical formula over a 70dB dynamic range. The conductivity (σ=4S/m,εr=10) and relative permittivity adjusted to fit the measurement profile aligned with previously reported values. These results support the strategy that field strength measurements can be used to locate an injects radio transmitter.
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2020 14th European Conference on Antennas and Propagation (EuCAP)
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© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Electrical engineering
Electronics, sensors and digital hardware
Medical biotechnology
Antennas and propagation
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Albadri, N; Salchak, YA; Thiel, DV; Espinosa, HG, E-Field Distribution in Ex-Vivo Porcine Skin Layer from a Subsurface UHF Transmitter, 2020 14th European Conference on Antennas and Propagation (EuCAP), 2020