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Signal in PCB - RF VIA or Coaxial cable ?

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ganesh.moorthy

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rf via

Hi everybody,

This is my first question in this forum.

I need to take signal @ 4GHz from Top layer of the PCB to the bottom layer.My layer stack up has both RO4350B and FR4 dielectric.The overall thickness is 1.5mm

Stack up:

RF
RO4350B
GND
FR4
SIG
FR4
SIG
FR4
SIG
FR4
GND

Can anyone suggest a solution???Can I use any VIA??

Or can I use a 0.08" RF coaxaial cable that is soldered at the top and bottom layers and passing througn a hole that is given in the PCB.
 

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