Millimeter wave dielectric characterization of biological tissues using an on-wafer CPW sensor
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چکیده
We describe a dielectric sensor that is used to measure several biological fluids and tissues. The device consists of an LTCC wafer with a PDMS ring on top. S-parameter measurements are made, TRL calibrated and de-embedded. Two extraction methods are used to obtain the relative permittivity: conformal mapping and a method based on 2D simulations. Results are given for ethanol, 50% ethanol-water, porcine blood and calf liver over a frequency range from 2 to 110 GHz. There is a good match between the results obtained with the conformal mapping and the 2D simulations method. Results for reference fluids correspond with published data.
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تاریخ انتشار 2013