Цитата(KostyantynT @ Oct 16 2014, 10:52)
Вот еще same as
https://d3nevzfk7ii3be.cloudfront.net/igi/f...UJ3dWQtRBi.huge Возможно из-за наличия PCB антенн. Хотя может и по технологии какие-то нюансы.
Вот один из вариантов (pro/contra)
On boards with multiple ground planes, use ground vias around the perimeter of the PCB every 2 cm to form a Faraday cage.
On most boards with two or more ground planes, there are enough naturally occurring via connections to make this guideline unnecessary. On boards that don't have enough naturally occurring via connections, placing the vias around the outer edge of the board will create a resonant cavity. In this case, it is better to distribute these connections throughout the board rather than placing them all near the edge.