问1:同轴电缆由哪几部分组成?答:同轴电缆由内导体、外导体、绝缘介质和防护套四部分组成,如图1所示。内导体的任务是传输高频电流。由于高频电流在导体中流过时存在集肤效应,即只沿导体表面流过,在导体内部没有电流。因而内导体可做成空心金属管或采用铜包铝、铜包钢材料制成,一般内导体由实心铜导线制成。图1同轴电缆结构图 Question 1: Which parts of the coaxial cable consists of? A: The coaxial cable consists of an inner conductor, an outer conductor, an insulating medium and a protective sleeve, as shown in Figure 1. The task of the inner conductor is to transmit high-frequency current. As the high-frequency current flowing in the conductor there is a skin effect, that is, flowing along the conductor surface only, there is no current in the conductor. Thus the inner conductor can be made of hollow metal pipe or copper clad aluminum, copper clad steel material, the general inner conductor made of solid copper wire. Figure 1 coaxial cable structure