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電子電路中"天線'的問題

Nov 3rd 2014, 12:54

通常看到天線為長的一根

但問題是那根是如何從電路中連接出來的? 需要迴路嗎? 意思是要兩條線嗎? 但以外觀來說好像只有一個連接點

電磁波應該要交流電吧?

是直流靠振盪器轉出來的嗎? 那出來的交流電也會有兩點呀那天線要接哪一點才會發射電磁波?

希望專家能明白我的問題

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