Latest posts from topic “Esercizio 1”

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Latest posts from topic “Esercizio 1” Latest posts from topic “Esercizio 1” on “ElectroYou”. 2021-10-20T08:35:03Z https://www.electroyou.it/forum/viewtopic.php?f=2&t=85123 Re: Esercizio 1 https://www.electroyou.it/forum/viewtopic.php?f=2&t=85123#p901835 alev 2021-10-20T17:50:30Z 2021-10-20T17:50:30Z

Se [quote="robdl"]Ciao O_/

O_/

Ti ho mandato un messaggio in privato!

Se riguarda l'esercizio, sarebbe meglio scrivere sul forum, così servirebbe a tutti

Re: Esercizio 1 https://www.electroyou.it/forum/viewtopic.php?f=2&t=85123#p901834 robdl 2021-10-20T17:40:29Z 2021-10-20T17:40:29Z

Ciao

O_/

Ti ho mandato un messaggio in privato!

Re: Esercizio 1 https://www.electroyou.it/forum/viewtopic.php?f=2&t=85123#p901826 dannywall 2021-10-20T16:20:03Z 2021-10-20T16:20:03Z

considerando d'avere un incidenza di tipo TM e sapere il campo Ha= 13 A/m in un punto A(1.51,0,-1.84)m , devo calcolare la densità di potenza dell'onda incidente e valutare il campo E nell'origine degli assi.

Per iniziare esprimo:
$H_i=H_0 e^{-jk_i r}$
$H_r=\gamma_{tm} H_0 e^{-jk_r r}$
$H_t=H_t e^{-jk_t r}$
considerando che H_a

H_a

è valutato nel primo mezzo ho che questo viene da:
[unparseable or potentially dangerous latex formula]

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

L'angolo $\theta_2$ lo ricavo tramite la legge di snell ed ho $\theta_2=28.47$

poi procedo con il calcolare il valore di $\gamma_{tm}=0.32$ considerando di avere $z_{tm2}=\frac{k_{z2}}{w e_0 e_{r2}}= 124.29$
$z_{tm1}=\frac{k_{z1}}{w e_0 e_{r1}}= 63.53$

alla fine ho che $H_0=\frac{13}{e^{-j2.99}+0.32 e^{-j5.27}}$ [unparseable or potentially dangerous latex formula]
$S_i=\frac{E_0 H_0*}{2}=\frac{\left | \xi H_0 \right |^2}{2}$

Poi ho che
$E_{tot}=E_i+E_r$ tenendo conto che [unparseable or potentially dangerous latex formula] quindi
$E_i=E_i e^{-jk_i r}$
$E_r= E_r e^{-jk_r r}$
essendo nell'origine l'esponenziale vale 1
quindi
E_i=E_0 i_a

E_i=E_0 i_a

e $E_r= \gamma_{tm}E_0 i_d$
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]
$E_0=\begin{bmatrix} 35.6048\\ 0\\ -79.4605 \end{bmatrix} +j\begin{bmatrix} 26.1689\\ 0\\ -58.4069 \end{bmatrix}$
soddisfando la proprietà di parallelismo con $\alpha= 1.36$ ho polarizzazione lineare

E' corretto???

Esercizio 1 https://www.electroyou.it/forum/viewtopic.php?f=2&t=85123#p901790 dannywall 2021-10-20T08:35:03Z 2021-10-20T08:35:03Z

Salve sono alle prese con un esame di fondamenti di onde e dato che sono agli inizi volevo avere un riscontro sugli esercizi che tento di svolgere in modo da sapere se sono svolti in maniera corretta. grazie in anticipo

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