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Three-dimensional FDTD analysis of a pulsed microwave confocal system for breast cancer detection: design of an antenna-array element

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      A perfectly matched layer for the absorption of electromagnetic waves

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        The dielectric properties of biological tissues: II. Measurements in the frequency range 10 Hz to 20 GHz.

        Three experimental techniques based on automatic swept-frequency network and impedance analysers were used to measure the dielectric properties of tissue in the frequency range 10 Hz to 20 GHz. The technique used in conjunction with the impedance analyser is described. Results are given for a number of human and animal tissues, at body temperature, across the frequency range, demonstrating that good agreement was achieved between measurements using the three pieces of equipment. Moreover, the measured values fall well within the body of corresponding literature data.
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          The dielectric properties of biological tissues: III. Parametric models for the dielectric spectrum of tissues.

          A parametric model was developed to describe the variation of dielectric properties of tissues as a function of frequency. The experimental spectrum from 10 Hz to 100 GHz was modelled with four dispersion regions. The development of the model was based on recently acquired data, complemented by data surveyed from the literature. The purpose is to enable the prediction of dielectric data that are in line with those contained in the vast body of literature on the subject. The analysis was carried out on a Microsoft Excel spreadsheet. Parameters are given for 17 tissue types.
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            Author and article information

            Journal
            IEEE Transactions on Antennas and Propagation
            IEEE Trans. Antennas Propagat.
            Institute of Electrical and Electronics Engineers (IEEE)
            0018926X
            May 1999
            : 47
            : 5
            : 783-791
            10.1109/8.774131
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