Dielectric Characterization of Biological Samples by Using an Open-ended Coaxial Probe

The present work proposes the use of a miniaturized open-ended coaxial probe to perform the detection of normal and malignant biological tissues, typically resulting from an excisional biopsy. The system has been numerically designed by analyzing a biological specimen having spherical shape and by varying its diameter, accordingly. The dielectric properties characterization has been carried out by using an open-ended coaxial probe combined with the virtual line transmission model reconstruction algorithm. The minimum size of the biological specimen to obtain an acceptable characterization has been assessed.