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peoblem 1 Derive the outward-traveling planes wave due to a current sheet → → placed over the z=0 plane. J = J0 ux 疑問是穩態電流怎麼能夠產生電磁波呢? 完全不知道怎麼算 problem 2 If we add the normalized shunt admittance 1+j1 at a quarter wavelength away from an open-circuit load, what is the percentage of incident power being absorbed by this lossy 1+j1 normalized shunt admittance? 一邊為四分之一波長長度接上開路負載,所以輸入端阻抗應該是0,而另一端是接到 1+1j的負載, 因為一邊的阻抗為0而造成短路,入射的power 應該不會走1+1j那邊 所以1+1j那邊吸收的比率為0 不知道這樣想對不對,因為這題配分不低,感覺這樣寫有點喇賽 還請高手指點 謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.228.243.26