Journal ArticleDOI
Multiterm Debye Dispersion Relations for Permittivity of Muscle
TLDR
Close form expressions for dielectric permittivity and conductivity are suggested for use as estimators over the 10 Hz-100 GHz range.Abstract:
A computer program was developed to fit multiple-term Debye-type expressions to published data of permittivity for muscle. The number of terms in this expression was varied and tested for significance. Based on these results, closed form expressions for dielectric permittivity and conductivity are suggested for use as estimators over the 10 Hz-100 GHz range.read more
Citations
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Journal ArticleDOI
The dielectric properties of biological tissues: III. Parametric models for the dielectric spectrum of tissues
TL;DR: A parametric model was developed to enable the prediction of dielectric data that are in line with those contained in the vast body of literature on the subject.
Journal ArticleDOI
A frequency-dependent finite-difference time-domain formulation for general dispersive media
TL;DR: In this article, a new differential equation approach is proposed for general dispersive media for which the complex permittivity in *( omega ) may be described by a single-order Debye relaxation equation or a modified version thereof.
Journal ArticleDOI
Simulated biological materials for electromagnetic radiation absorption studies.
TL;DR: Formulas are presented for simulating bone, lung, brain, and muscle tissue in the frequency range of 100 MHz to 1 GHz, and by using these preparations a realistic equivalent to the human body can be constructed.
Journal ArticleDOI
Finite-difference time-domain simulation of ground penetrating radar on dispersive, inhomogeneous, and conductive soils
TL;DR: A three-dimensional (3D) time-domain numerical scheme for simulation of ground penetrating radar (GPR) on dispersive and inhomogeneous soils with conductive loss is described, and an almost linear speedup is observed.
Journal ArticleDOI
Propagation in linear dispersive media: finite difference time-domain methodologies
TL;DR: In this article, a finite difference time-domain (FDTD) method for electromagnetic wave propagation in two different kinds of linear dispersive media: an Nth order Lorentz and an Mth order Debye medium is presented.
References
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Journal ArticleDOI
Nonionizing electromagnetic wave effects in biological materials and systems
C.C. Johnson,A.W. Guy +1 more
TL;DR: In this paper, the problem of microwave penetration into the body with resultant internal power absorption is approached from both the theoretical and the experimental viewpoints, in terms of therapeutic warming of tissues and possible hazards caused by internal "hot spots."
Journal ArticleDOI
In Vivo Probe Measurement Technique for Determining Dielectric Properties at VHF through Microwave Frequencies
E.C. Burdette,F.L. Cain,J. Seals +2 more
TL;DR: In this article, a probe technique for the determination of dielectric properties of semisolid materials and living tissues in situ is described experimentally and theoretically, based on an antenna modeling theorem.
Journal ArticleDOI
RF-field interactions with biological systems: Electrical properties and biophysical mechanisms
H P Schwan,Kenneth R. Foster +1 more
TL;DR: In this article, the physical mechanisms for the observed temperature coefficients of the dielectric properties were discussed in terms of the interaction mechanisms which give rise to observed relaxational effects, and possible mechanisms for nonthermal weak interactions between radiofrequency energy and tissues were discussed and evaluated.
Journal ArticleDOI
The conductivity of living tissues.
Herman P. Schwan,C. F. Kay +1 more
TL;DR: Investigation of the homogeneity of the electrical properties of tissue is indicated, and data that characterize the passive electrical characteristics of tissue as existent for the currents generated by the heart are reported.