Simulation Based Poynting Vector Description of the Field Regions for Simple Radiating Structures

Estimating the coupling properties between a radiating structure and other conductive elements, field behavior of source is essential to know. One well-known classification are field-regions around antennas, namely, far-field, near-field, reactive near-field. The different kinds near-fields distinguished by parts electromagnetic field, whereas in far-field region behaves as plane wave direction propagation. way describe these characteristics use complex Poynting vector, which defines power flow. This work presents Poynting-vector-based approach classify visualize simple radiators using numerical simulations. First, applied antenna structures such dipoles loop antennas. Later, introduced regions utilized predict practical applications, single elements linear array, an electrically large antenna. It could be shown that approach, defining surface description boundary near-field regions, enables possibility predicting structures. error estimator for also delivers knowledge about quality angular directions distances. All simulations have been executed applying one-dimensional partial element equivalent circuit method.