[SI-LIST] high speed PCB design


        Hello All,


                  I am in phase of designing the 1394a high speed board with
max operating frequency as 400mhz.

        In my last revision of the board , there was a issue of noise &
impedance matching.

        how one can control impedance ?

        how can i reduce the noise on the overall board. Noise level @
400mhz is around 70-80 mv.

        how one can select filtering circuit. ?

        please Suggest
        regds
        Sunilm



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