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我看网上的资料说芯片接地串联一个零欧电阻能减少反射。但我自己没试过，
我怕加了个电阻，虽然是零欧的，但会不会影响芯片的电流流动？
高频接地有0ohm电阻应该是对噪声有衰减的作用，因为0欧电阻相当于很窄的电流通路，能够有效地限制环路电流，使噪声得到抑制。
