Answer by Joren Vaes for Using a via fence without a top layer ground pour
First off, depending on the plating you use and the size of your microstrip lines, it could be that you want to pour the top metal anyways. For consistent plating, you need to have even, constant...
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I'm designing a 4-layer 6GHz RF PCB. The top layer is a signal layer and has the RF microstrip traces and the 2nd layer is an unbroken ground plane. I'm leaning against filling the remainder of the top...
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