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Latest posts from topic “Dubbio polarizzazione campo” Latest posts from topic “Dubbio polarizzazione campo” on “ElectroYou”. 2016-07-29T17:57:55Z https://www.electroyou.it/forum/viewtopic.php?f=36&t=65275 Re: Dubbio polarizzazione campo https://www.electroyou.it/forum/viewtopic.php?f=36&t=65275#p671354 g26 2016-10-01T13:31:50Z 2016-10-01T13:31:50Z
Ormai penso sia tardi per rispondere, comunque si, è ellittica :D
Possiamo sempre scrivere \mathbf{E} come
\mathbf{E} = \mathbf{A} + j\mathbf{B}
dove \mathbf{A} e \mathbf{B} son due vettori reali.
Portando questo risultato nel dominio del tempo si ha che
[unparseable or potentially dangerous latex formula]

Quindi abbiamo
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

La somma di due funzioni sinusoidali può essere sempre riportata come una sinusoide sfasata
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]
che è appunto l'equazione polare di una ellisse!
Dubbio polarizzazione campo https://www.electroyou.it/forum/viewtopic.php?f=36&t=65275#p662288 Shika93 2016-07-29T17:57:55Z 2016-07-29T17:57:55Z
Non mi ricordo dove sia finito il mio libro di campi quindi se non vi dispiace chiederei qui.
Se ho un'equazione del tipo [unparseable or potentially dangerous latex formula] oppure allo stesso modo [unparseable or potentially dangerous latex formula] questa è un campo polarizzato ellitticamente se non mi viene detto niente di \mathbf{E_y} ed \mathbf{E_z}, giusto?

Se non sbaglio la forma universale è la polarizzazione ellittica. Se \mathbf{E_y}=\alpha \mathbf{E_z} è polarizzata linearmente, mentre se \mathbf{E_y} ed \mathbf{E_z} sono ortogonali e con lo stesso modulo, è polarizzato circolarmente (quindi E_y=E_z e \mathbf{E_y} \cdot \mathbf{E_z}=0)