美国《微波》杂志一九七九年第七期对雷达用电子调谐磁控管和电子调谐的三种方法作了介绍。指出,虽然机械调谐可用于磁控管频率漂移的校正,但在雷达应用上由于高功率、高速度宽带调谐的要求,只能使用电子调谐的方法。一般具有溶频宽带的电压调谐管可以满足调谐速率的要求,但功率不夠,而二极管调谐则有宽带限制,因此雷达最实用的设计是应用电子二次倍增调谐。这种设计在主管空腔周围加有许多二次空腔。在主管腔里能使电子 The seventh issue of Microwave in the United States in 2007 introduced the three methods of radar using electronically tuned magnetrons and electronic tuning. Pointed out that although mechanical tuning can be used to correct the frequency drift of the magnetron, only the electronic tuning method can be used in radar applications because of the requirement of high power and high speed broadband tuning. Generally, the voltage-tunable tube with frequency-dissolving broadband can meet the requirement of tuning speed, but the power is not enough, while the diode tuning has the limitation of broadband. Therefore, the most practical design of the radar is to apply the electronic second-time multiplying tuning. This design adds a number of secondary cavities around the primary cavity. In the main cavity can make electronic