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some questions about drawing PCB layout in Protel DXP

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antenna_abc

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Hi, everyone. I have some questions about drawing the mushroom-like EBG structure on a 4-layer PCB by using Protel DXP.

My questions are:

1. How can I define the buried via connecting ground plane and intermediate copper layer with square conducting patches on it? Actually it seems that I cannot directly place the via/hole on the PCB in Protel DXP.

2. How do I define different shapes of conducting patch in Protel DXP?

Thanks in advance.
 

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