ABSTRACT
Dosimetry consists of two parts. The first part involves the evaluation of incident fields, which are produced by certain sources. Second is the evaluation of internal fields inside an object, which are also either measured or calculated. Engineering contributions in the field of electromagnetic (EM) bioeffects have made it possible to evaluate the field strength or power density due to exposure from an EM source and check its compliance with protection guidelines. Modeling means theoretical calculation of RF fields at various points from a source. The field strength at the receiving antenna is related to the received power Pr by considering the fact that the received power is the antenna effective aperture area multiplied by the power density. Computer modeling using approximations of the geometry and power input of the antenna will generally suffice. Normally, towers are designed to elevate antennas in accordance with the intended coverage area.
