Aceste pierderi se manifesta prin scurgeri in izolatoare, mai ales in acele puncte ale antenei unde avem maxime de tensiune, respectiv la capetele antenei. Tensiunea de radiofrecventa la extremitatile antenei…
Orice conductor prin care trece un curent intens se incalzeste. Intensitatea curentului care trece printr-o unitate de suprafata din sectiunea conductorului poarta denumirea de „densitate a curentului". Astfel, pentru curent…
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