Methods for Measuring Permittivity of Biological Samples: Coaxial Probe
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Document typeBachelor thesis
Date2016-05
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Abstract
This thesis shows the capacity of a coaxial probe to measure permittivity in biological samples. The project’s aim is to study the optimal parameters which the coaxial probe has to have in order to perform measurements as accurately as possible. Some simulations are presented showing the little differences between the real measurements and simulated ones with Advanced Simulation Design (ADS) software. These measurements have been done in air and known materials at the beginning in order to check that the set-up worked properly and they have been finally performed in biological samples. Esta tesis muestra la capacidad de una sonda coaxial para medir permitividad en muestras biológicas. El objetivo de este proyecto es estudiar los parámetros óptimos que la sonda debería tener para poder realizar medidas de la forma más precisa posible. Las medidas presentadas muestran las pequeñas diferencias entre las medidas hechas directamente en los materiales y las simuladas con el programa Advanced Simulation Design (ADS). Primeramente, estas medidas han sido realizadas en aire y materiales conocidos para así ser capaces de comprobar el correcto funcionamiento de la sonda y, de este modo, poder realizarlas en muestras biológicas. Aquesta tesi mostra la capacitat d’una sonda coaxial de mesurar permitivitat en mostres biològiques. L’objectiu d’aquest projecte és estudiar els paràmetres òptims que la sonda hauria de tenir per poder realitzar mesures de la forma més acurada possible. Les mesures presentades mostren les petites diferencies entre les mesures fetes directament als materials i les simulades amb el programa Advanced Simulation Design (ADS). Primerament, aquestes mesures han sigut fetes en aire i materials coneguts per poder ser capaços de comprovar el correcte funcionament de la sonda i, d’aquesta manera, poder fer finalment les mesures en mostres biològiques.
Description
Measurement of permittivity of biological samples at microwave frequencies has proven useful for many purposes going from determining the state (ripeness) of a piece of fruit, to evaluating the presence of a cancer in a breast sample tissue. In this project a comparison between two methods (resonant cavities and coaxial probe) will be performed in order to asses its feasibility to be used in the diagnosis of colonorectal and liver cancer.
DegreeGRAU EN ENGINYERIA DE SISTEMES DE TELECOMUNICACIÓ (Pla 2010)
Files | Description | Size | Format | View |
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RodriguezUtreraSergi_Degree_thesis.pdf | 1,404Mb | Restricted access | ||
RodriguezUtreraSergi_Annexes.zip | 119,3Kb | application/zip | Restricted access |