Construction and Characterization of Dipole Antenna to be Used in SAR Measurements

Abstract

Verification of Specific Absorption Rate measurement system is necessary before determining the Specific Absorption Rate value of mobile phones. The Specific Absorption Rate measurement system, including the electric field probe, the tissue equivalent liquid and robot used for positioning the probe and also the special software, should be validated in order to check whether it works correctly or not at the test frequency. A flat phantom and a reference dipole antenna are used for the system verification. The reference dipole antenna is placed at the bottom of the flat phantom. So, electric field is formed inside the liquid by applying a known power is delivered to dipole antenna to the tissue equivalent liquid. In this study, the construction, characterization and validation measurements of reference dipole antenna which is one of the important components of validation measurements will be discussed.