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The MAX2829 datasheet (page 23, GROUP DELAY RIPPLE vs. FREQUENCY (COARSE SETTING = 9.5MHz) ) give the group delay ripple is near 40ns, to me this value is so big for a high symbol rate system (xx ns symbol width), such as 802.11 PHY or OFDM PHY design, that will cause severe Inter-Symbol Interference, is it true? If yes, what's to be done? a group delay equalizer, such as allpass filter?
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