利用射束技术可望制出一种新型的起微波开关作用的结型场效应晶体管。目前,在电子扫掠雷达系统的天线辐射控制中通常用PIN二极管作微波开关。据称,结型场效应晶体管的截止频率可达100千兆赫,它比PIN二极管的截止频率稍低一点。结型场效应晶体管的优点是所需的功率可以控制,它比目前雷达系统要求的功率至少低 The use of beam technology is expected to make a new type of junction field effect transistors that function as microwave switches. At present, the PIN diode is usually used as the microwave switch in the antenna radiation control of the electronic sweeping radar system. It is said that the junction field effect transistor cut-off frequency up to 100 gigahertz, which is slightly lower than the PIN diode cut-off frequency. The advantage of a junction field-effect transistor is that the power required can be controlled, which is at least as low as the current required by the radar system