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Recent content by Taylorchen

  1. T

    50 Ohm inmpedance matching for 4 layers PCB

    Normally, the impedance simulation depends on Er and impedance model. I always consider Er is a variable, after lamination, the Er definately will be different than the orginal value. if we want to get more accurate simuation result, we have to think about how to make the Er more precise duiring...

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