Complex rational function for frequency dependent complex permittivity of biological tissues

@article{Ha2013ComplexRF,
  title={Complex rational function for frequency dependent complex permittivity of biological tissues},
  author={Sang-Gyu Ha and Sungmin Park and Eunki Kim and Kyung-Young Jung and Yong Bae Park},
  journal={2013 Asia-Pacific Microwave Conference Proceedings (APMC)},
  year={2013},
  pages={380-382}
}
In this work, we accurately characterize frequency dependent complex permittivity of biological tissues in the frequency range from 100 kHz to 10 GHz. Toward this purpose, a fourth-order complex rational function (CRF) is employed for dispersive modeling of the relative permittivity of biological tissues. We also discuss how to improve the accuracy of their dispersion characteristics. 

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