铝箔(或HGP导电布)主要用于屏蔽高频电磁波,防止高频电磁波与网络导体接触,产生感应电流,增加串扰。当高频电磁波接触铝箔时,根据法拉第电磁感应定律,电磁波会附着在铝箔表面,产生感应电流。此时,需要导体将感应电流引入地球,以避免感应电流干扰传输信号。使用铝箔作为屏蔽层的网线一般要求铝箔的重复率不低于2
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