AT02876: Atmel REB212BSMA Hardware User Manual [APPLICATION NOTE]
Atmel-42097B-WIRELESS-AT02876-REB212BSMA-Hardware-User-Manual_ApplicationNote_062014
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When a trace is cutting the plane on one side, the design should contain vias along this trace to bridge the
interrupted ground on the other side. Place vias especially close to corners and necks to connect lose polygon
ends.
The pads where the shield is mounted also need some attention. The shield has to be integrated in the ground
planes. Vias, in a short distance to the pads, will ensure a low impedance connection and also close the FR4
substrate as mentioned above.
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Mechanical Description
The REB212BSMA is manufactured using a low-cost, two-layer printed circuit board. All components and
connectors are mounted on the top side of the board. The format was defined to fit the EXPAND1 connector on
the Atmel AVR STK500/STK501 microcontroller evaluation board. The upright position was chosen for best
antenna performance.
Figure 6-1.
Mechanical Dimensions
