2.5
Antenna
WT12-A module has an internal antenna which makes the module easy to integrate into a
product. Nevertheless, to ensure proper operation it is very important to follow
recommendations regarding the copper keep out area. Bluegiga offers design references
and Gerber files which show how to design grounding around the module.
The following list can be used as a checklist for the design:
•
Place the WT11 module to the edge of the PCB
•
Do not enclose the module in the metal shielding.
•
Do not place ground plane or traces underneath the antenna.
•
Do not place the antenna close to any metal objects.
•
Do not place wiring near the antenna.
•
Do not use very thin PCB tracks.
•
Test the plastic casing for high RF losses.
10
Содержание WT11-A
Страница 1: ...WT11 A D e s i g n G u i d e V e r s i o n 1 1 F r i d a y S e p t e m b e r 3 0 2 0 0 5 ...
Страница 8: ...Figure 2 Filtering the supply lines L1 C6 C21 and L2 C4 C14 Figure 3 UART 8 ...
Страница 9: ...Figure 4 USB Figure 5 An example of a good power supply design Figure 6 Audio design for WT11 9 ...
