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用于中国原子能科学研究院改进后的14MeV电子直线加速器微波系统的S波段高功率可变定向耦合器已于1986年底研制成功。它是由两个性能相同的3dB耦合器串接并在其中两个输出支路插入一个移相器组成。工作原理如图1所示。
The S-band high-power variable directional coupler for the improved 14MeV electron linear accelerator microwave system used by China Institute of Atomic Energy has been successfully developed at the end of 1986. It consists of two 3dB couplers with the same properties connected in series and one of the two output branches inserted into a phase shifter. Working principle shown in Figure 1.