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    Metal patterns in PCBs

    I ran in to this picture of a pcb in a datasheet. It was just weird for me to see this metal pattern on the top layer. Any thoughts on why this exists?

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    Re: Metal patterns in PCBs

    I believe it's a PCB waveguide.



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    Re: Metal patterns in PCBs

    Quote Originally Posted by Swend View Post
    I believe it's a PCB waveguide.
    No..It's a pattern to tune the Matching Circuit.


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    Re: Metal patterns in PCBs

    How can you tune the matching circuit? The copper squares surround the microstrip, and are not tunable.
    Could it be a metal filling rule? something like on-chip design rules?



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    Re: Metal patterns in PCBs

    Quote Originally Posted by dajuhovova View Post
    How can you tune the matching circuit? The copper squares surround the microstrip, and are not tunable.
    Could it be a metal filling rule? something like on-chip design rules?
    They are just to connect a SMD component where the matching is proper.The designer may make a fine tuning to shift left and right the matching component.
    There are also stub optional pads around it.They are for to tune the length of the stub too..



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