The structure of field emission triode is first simulated by MAGIC . The tip height tip position tip curvature gate aperture and gate voltage are changed to observe the emission current and the electron congregation .

本课题首先采用MAGIC软件对 三极 管结构的 尖锥场发射 阴极进行了模拟计算，分别改变尖锥高度，锥尖位置，尖锥曲率半径， 栅极孔径及栅极电压，观察阳极 收集电流及电子束的会聚情况。

Triode can be designed by film edge field emission cathode in which the cathode gate and anode are all in a planar structure so its interelectrode capacity is very low . It is suitable for the application of high speed and high frequency circuit .

利用薄膜边缘场发射阴极设计的 三极 管，阴极、 栅极和阳极是平面结构，因此极间电容小，适合应用于高速和高频电路。