Electromagnetic analysis of the distributed structures applied to EMC and SAR estimation problems

The electromagnetic compatibility (EMC) and estimation of specific absorption rate (SAR) problems are discussed in this paper together with interaction of the cellular telephone antenna field with the user´s head considering the shape of the telephone housing and the model of the hand. The radiation characteristics of cellular handset antennas strongly depend on the objects in vicinity of the phone. When the wavelength of the radiated field is comparable with the dimensions of the objects located near the handset those objects disturb performance and change all electrodynamic properties of the antenna. The presented electromagnetic analysis is based on method of auxiliary sources (MAS) (R. Zaridze et al., IEEE Trans. Antennas and Propag., vol. 50, No. 1, pp. 50-58, 2002).