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  1. #1
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    Is this correct design of RF trace ?

    Dear all, who is professionals in RF circuit,

    I need you to judge that the guy who has designed this PC board has knowledge of RF circuit design or not ?
    This is VHF PCB board @950MHz, the PCB board has 8 layers

    I don't know why he routed RF trace at the edge of PCB

    Click image for larger version. 

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    should it correctly be routed like that ?,
    how did it mange to guarantee of 50-Ohm impedance ?

    Click image for larger version. 

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    Any your comments are valuable, Thanks!

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  2. #2
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    Re: Is this correct design of RF trace ?

    It is microstrip line. There is some distance to the PCB edge, so the impedance is not significantly affected.



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  3. #3
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    Re: Is this correct design of RF trace ?

    In fact, there is not so much Microstrip structure on that PCB.So, it should be ok..
    But if the frequency is high enough, changing the Microstrip Line from 1-7-1 may create a problem if the Impedance Matching or other constraints are tight.
    We should know the application and if it's possible the schematic.



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