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X-Ref Target - Figure 3-23 
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Guidance:
•Trace width = 5.8 mils. Need a neck down trace of 42 mil length with 4 mil width to tune the RL to –20 dB @ 6 GHz.
•Air gap between signal and ground = 15 mils. Air gap between P and N signals = 15 mils. Width of ground guard trace is 18 mils.
•Remove all unused pads.
•Land pads for all grounds = 18 mils.
•Land pad for signal via = 18 mils.