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Modelling at gigahertz frequencies is often based on (non)linear microwave/millimeter wave measurements. These measurements are usually considered ideal in modelling procedures. In this work, we demonstrate how measurement uncertainty may impact model extraction in two application areas: biofluidic modelling and large-signal transistor modelling.
This paper presents a calibration method for broadband dielectric spectroscopy of micro-liter samples of biological liquids with transmission line sensors up to 110 GHz. The method uses water and methanol as calibration liquids to perform a probe-tip-to-liquid calibration without prior knowledge of their complex permittivity. Extracted complex permittivities of the calibration liquids show good agreement...
This paper reports on dielectric spectroscopy for microliter liquid samples using reference materials. In order to fully determine the calibration coefficients, air and water are used as known reference materials, while methanol is used as an unknown material, which is also used to validate the approach up to 5 GHz for which reference data is available. The method is then used up to 110 GHz for yeast...
We present in this paper an inexpensive sensor realized on printed circuit board for broadband dielectric characterization of both liquids and solids. It is based on a CPW-CPW transition and statistical calibration. The specific property of the approach is that no assumption regarding cascading transmission lines with different properties has to be made as permittivity is obtained by a single-tier...
The ATLAS experiment at the Large Hadron Collider (LHC), located in Geneva, will collect 3 to 4 petabytes or PB (1015 bytes) of data for each year of its operation, when fully commissioned. Secondary data sets resulting from event reconstruction, reprocessing and calibration will result in an additional 2.5 PB for each year of data taking. Simulated data sets require also significant resources as...
This paper presents a new level set based solution for automatic medical image segmentation. Study shows that level set methods using image intensity or gradient information alone can not generate satisfying segmentation on some complex organic structures, such as lung bronchia or nodules. We investigate the intensity distribution of these organic structures, and propose a calibrating mechanism to...
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