Compensation method and external actions

The influence of external actions (intensive external disturbance) on the operation of a complicated structure of radiators is considered. As an example, the impact of approaching of metallic objects to an antenna system with minimal irradiation on user´s body is analyzed. In order to counteract the disturbance of the system operation due to presence of different metallic objects in close proximity to the radiators, two methods based on two information sources, namely antennas driving currents and antennas fields at a given point, are studied. It is shown that under conditions of severe external actions the second method based on the measurement of the fields demonstrates a higher efficiency. A block scheme for automatic structure adjustment is suggested.