A simple method for the characterisation of radiated fields is presented th
at is based on the application of the spherical wave expansion. The spheric
al wave coefficients are solved ia a new manner by using an iterative matri
x (IM) method. The method can be used to decrease the number of field sampl
es required to characterise the radiated field compared to the conventional
matrix method. The performance of the IM method is illustrated with simula
ted field measurements for mobile phones.