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MMWAVEPOEEVM: thanks for the reply. but i still have questions about "PROC076A(001)_Sch"

Part Number: MMWAVEPOEEVM

thanks for the document

but i still have questions.

if the grounds are separated, how the electrical potental of signal gnd(GND) can be ground(0V)?

due to the connector RJ45, GND_BS can be an earth ground(I understand).

from the schematice "PROC076A(001)_Sch" which is TI given.

GND_BS and GND_RTN and GND are still not connected.

how the GND_RTN and GND could have 0V potential?

Does GND_RTN need to be a 0V? if it doesn't need to. GND_RTN can be floating( I understand)

but How about signal gnd(GND)? i think it must be a 0V. if it is, i think it must be conncted to the GND_BS using bead(which is DC short)

but i can't see any connections between GND_BS and GND

Look forward to your answer as soon as possible

thank you