摘要
本文提出了一种利用金属条对螺旋线进行不对称加载,使得模式1和模式2在相移为π时对应的频率形成间隔,适当调整这一间隔可以使电子注的电压线和模式2色散曲线的返波部分不相交,从而避免出现返波振荡。还讨论了影响相移为π时对应的频率的因素和使用这种方法需注意的问题。
引文
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