[問題] 傳輸線公式推導一個小問題
小弟不才,微積分沒學好,看不懂公式最後怎麼導出來的
請有請高手幫忙解釋一下 <(_ _)>
RF電路中,Time Harmonic Transmission Line Equations的推導
有一步將複數實部帶入general transmission line equations的看不懂...有大師可以解
釋一下的嗎?
由連結中的equations
Equation 51 and Equation 53
http://www.dannex.se/theory/4.html#_Ref375466542
最後變成以下的equations, 可是為什麼還是有jw這個虛部存在呢?
Equation 56 and Equation 57
http://www.dannex.se/theory/4.html#_Ref375466702
For harmonic time dependence the use of phasors simplifies the transmission
line equations to ordinary differential equations. For a cosine reference...
V(z,t)=Re[V(z)e^jwt]
I(z,t)=Re[I(z)e^jwt]
推導是說將上式帶回general transmission line equations, 可是上面兩個式子不是只
有實部嗎?為什麼最後還是有虛部存在呢?
ㄜ...所以到底是哪邊我裡解有錯誤呢??
在這邊感謝高手解答先
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※ 編輯: elfmushroom 來自: 128.205.230.148 (08/30 08:04)
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