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研制了一种新型的低杂波耦合结构——多结波导阵天线。在这种天线中,功率分配是通过矩形波导的E面结来实现的,相邻波导间的相位差则利用在子波导中插入不同长度的聚四氟乙烯介质块来获得。使用这种多结波导陈天线,我们在HT-6M托卡马克装置上成功地开展了低杂波电流驱动实验,取得了η_(CD)=0.55(10~(13)cm~(-3)·m·kA/kW)的好结果,并在很低的微波功率水平下观察到了对MHD行为的影响。
A new type of low-noise coupling structure-multi-junction waveguide array antenna was developed. In this antenna, the power distribution is achieved through the E-junction of the rectangular waveguide. The phase difference between adjacent waveguides is obtained by inserting polytetrafluoroethylene dielectric blocks of different lengths in the sub-waveguide. Using this multi-junction waveguide antenna, we succeeded in low-clutter current driving experiment on the HT-6M Tokamak device. The results showed that η = (CD) = 0.55 (10 ~ (13) cm ~ · M · kA / kW) and the effect on MHD behavior was observed at very low microwave power levels.