Converting total-radiated-power measurements to equivalent E-Field Data

Abstract

This paper discusses the procedure to convert total-radiated power measurements data to equivalent electrical field data, which might be get on a standardized test site. The algorithm in use is based on two parameters, which are the geometrical factor g <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> and the directivity of equipment under test (EuT) D <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> . Both parameters are unknown for unintentional radiators. The aim of this paper is to collect the published information to predict these parameters and to discuss the influencing factors to get a useful approximation for g <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> and D <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> . Especially the prediction of D <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> depends on the effective size of the EuT described by the radius of a sphere containing the EuT.