TY - JOUR
T1 - Electromagnetic Property Characterization of Biological Tissues at D-Band
AU - Shimonov, Gregory
AU - Koren, Arnon
AU - Sivek, Galit
AU - Socher, Eran
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/3
Y1 - 2018/3
N2 - This paper presents, for the first time, measured complex dielectric and magnetic properties of liquid and solid biological tissues taken from human arteries in the frequency range 110-170 GHz. The complex permittivity and permeability are extracted from scattering parameters of a waveguide capsule loaded with biological tissue. The estimation of the dielectric properties was done by the Nicholson-Ross-Weir conversion process. A D-band waveguide setup for measuring with temperature stabilization at 37 °C was developed and is described herein. Results show large differences between dielectric properties of blood (10.7 + j2.9), adipose tissue (2.5 + j0.3), calcified tissue (3.2 + j0.84), and fibrous tissue (8.8 + j3.3). While calcified tissues and adipose tissues show relative permeability higher than 1 (1.8-1.4 + j0.2), fibrous tissues show μr of 1 + j0.4 and blood proves to be diamagnetic with 0.7 + j0.5. The measured blood refractive index follows the frequency trend of the Cole-Cole model extrapolated data of previously measured blood at lower frequencies.
AB - This paper presents, for the first time, measured complex dielectric and magnetic properties of liquid and solid biological tissues taken from human arteries in the frequency range 110-170 GHz. The complex permittivity and permeability are extracted from scattering parameters of a waveguide capsule loaded with biological tissue. The estimation of the dielectric properties was done by the Nicholson-Ross-Weir conversion process. A D-band waveguide setup for measuring with temperature stabilization at 37 °C was developed and is described herein. Results show large differences between dielectric properties of blood (10.7 + j2.9), adipose tissue (2.5 + j0.3), calcified tissue (3.2 + j0.84), and fibrous tissue (8.8 + j3.3). While calcified tissues and adipose tissues show relative permeability higher than 1 (1.8-1.4 + j0.2), fibrous tissues show μr of 1 + j0.4 and blood proves to be diamagnetic with 0.7 + j0.5. The measured blood refractive index follows the frequency trend of the Cole-Cole model extrapolated data of previously measured blood at lower frequencies.
KW - Coronary arteries
KW - D-band
KW - Nicholson-Ross-Weir (NRW) conversion process
KW - human tissue
KW - material characterization
KW - millimeter-wave (mm-wave) biosensing
KW - waveguide tissue capsule
UR - http://www.scopus.com/inward/record.url?scp=85040918505&partnerID=8YFLogxK
U2 - 10.1109/TTHZ.2018.2789357
DO - 10.1109/TTHZ.2018.2789357
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AN - SCOPUS:85040918505
SN - 2156-342X
VL - 8
SP - 155
EP - 160
JO - IEEE Transactions on Terahertz Science and Technology
JF - IEEE Transactions on Terahertz Science and Technology
IS - 2
ER -