Current-Line Solution for Understanding and Predicting B1 / B1+ Behavior and Investigating Central Focusing

Gianluigi Tiberi¹, Mauro Costagli¹, Riccardo Stara, ¹², James Tropp³, Michela Tosetti, ¹⁴

We introduce a novel analytical approach based on the theory of cylindrical waves radiated by a filament of a-c current. The approach permits to calculate B1/ B1+ inside volume resonators loaded with cylinders. Moreover, it permits to separate the solution to single line source problem (primordial solution) and the composite one (the tions of primordial solutions accordingly to the resonator driving). This feature is of fundamental importance, because only by looking at single line solution it is possible to have insight into central focusing, investigating and discriminating among phenomena of dielectric resonance, standing wave and multi-source interference.