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1.绪言:在大功率中波同轴馈线设计时,除一般的传抪常数外,还遇到功率问题。同轴电缆的功率受到内导体的温升,绝缘层的耐电压,耐电晕特性及电缆各部份受温度膨胀等因素限制。以前作为这种电缆的结构提出采用 NHK 型半实心绝缘,可是它有必须充气的缺点。为此我们研究比较容易维护的实心绝缘结构的可能性。例如,绝缘层用有
1. Introduction: In the design of high-power medium-wave coaxial feeder, in addition to the general transfer constant, but also encountered power problems. The power of the coaxial cable is limited by the temperature rise of the inner conductor, the withstand voltage of the insulation layer, the corona resistance and the temperature expansion of all parts of the cable. Previously proposed as NHK type semi-solid insulation as a structure of such a cable, there was a disadvantage that it had to be inflated. For this reason we study the possibility of a solid insulating structure that is easier to maintain. For example, insulation is used