Via Stitching and Shielding là một kỹ thuật thường được sử dụng cho những thiết kế cao tần, antenna.
Via stitching on the PCB is where a large number of vias are used to connect copper areas on different layers together. Via shielding (sometimes called a picket fence) is where one or two rows of vias connect copper pour together at the perimeter of some tracks or the copper pour areas.
Adding Stitching Vias
Via stitching is run as a post-process, filling free areas of copper with stitching vias. For stitching to be possible, there must be overlapping regions of copper that are attached to the specified net, on different layers. Supported regions of copper include Fills, Polygons and Power Planes.
Select the Tools » Via Stitching/Shielding » Add Stitching to a Net command from the menus to add stitching vias to a specific net. The Add Stitching to Net dialog will open, where the Stitching Parameters and Style is specified. Using the selected net, the stitching algorithm identifies all Fills, Polygons, and Power Planes attached to that net and attempts to connect them through the board, using the specified and stitching pattern.
Hướng dẫn add via tự động
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