
Figure 6.3. Poor Layout Designs for the MGM13S
Layout checklist for MGM13S:
1. Antenna area is aligned relative to the module pads as shown in the recommended PCB land pattern.
2. Clearance area within the inner layers and bottom layer is covering the whole antenna area as shown in the layout guidelines.
3. The antenna loop is implemented on the top layer as shown in the layoyt guidelines.
4. All dimensions within the antenna area are precisely as shown in the recommended PCB land pattern.
5. The module is placed near the edge of the PCB with max 1mm indentation.
6. The module is not placed in the corner of the PCB.
6.2 Effect of PCB Width
The MGM13S module should be placed at the center of the PCB edge. The width of the board has an impact to the radiated efficiency
and, more importantly, there should be enough ground plane on both sides of the module for optimal antenna performance.
6.4 MGM13S PCB Top Layer Design on page 71
gives an indcation of ground plane size vs. maximum achievable range.
Figure 6.4. MGM13S PCB Top Layer Design
The impact of the board size to the radiated performance is a generic feature of all PCB and chip antennas and it is not a unique fea-
ture of the MGM13S. For the MGM13S the depth of the board is not important and does not impact the radiated performance.
MGM13S Mighty Gecko SiP Module Data Sheet
Layout Guidelines
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