Numerical Analysis of Antenna Parameter Influence on Brightness Temperature in Medical Microwave Radiometers

TL;DR

This study investigates how antenna parameters affect brightness temperature measurements in medical microwave radiometers, highlighting the importance of antenna mismatch and establishing key dependencies for improved diagnostic tools.

Contribution

It provides a detailed analysis of antenna parameter effects on brightness temperature, emphasizing the role of mismatch and establishing parameter dependencies for medical applications.

Findings

Antenna mismatch contributes about 2% to brightness temperature formation.

Brightness temperature depends on antenna diameter and frequency.

Depth range of temperature measurement was determined.

Abstract

This article presents a study on the influence of antenna parameters in medical microwave radiometers on brightness temperature. A series of computational experiments was conducted to analyse the dependence of brightness temperature on antenna characteristics. Various antenna parameters and their effect on the distribution of electromagnetic fields in biological tissues were examined. It was demonstrated that considering the antenna mismatch parameter is crucial when modelling the brightness temperature of biological tissues, contributing about 2 percent to its formation. The depth range of brightness temperature measurement was determined. The dependence of brightness temperature on the antenna diameter and frequency was established. The findings of this study can be applied to improve medical microwave radiometers and enhance their efficiency in the early diagnosis of various diseases.