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在托卡马 克中采用离子 回旋共振加热时 ，为了更好地 保护 天线，常 常把天 线置 于洞穴 内。由于 洞穴内的边界 条件比较复 杂，其 耦合 计算 也相对 较难 。对洞 穴内 二维 带状 天线 进行 了计 算。给 出了该体制天线 的耦合阻抗随 天线尺寸的变化 关系。
When using ion cyclotron resonance heating in tokamak, the antenna is often placed inside a cave in order to better protect the antenna. Due to the complicated boundary conditions in the cave, the coupling calculation is relatively difficult. The two-dimensional ribbon antenna in the cave was calculated. The relationship between the coupling impedance of the antenna and the antenna size is given.