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mrgong:普通板为FR4环氧树脂,介电常数4.4左右 高频有特氟龙材料 介电常数从2.1-3.5都有,再高就是陶瓷基板,一般用于gps天线对尺寸敏感的场合 (2013-05-29 09:20) 6&x\!+]F8