SC14WAMDECT datasheet(26/36 Pages) DIALOG

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Datasheet

Revision 3.0

23-Jul-2015

CFR0011-120-00-FM Rev 5

26 of 36

SC14WAMDECT SF

Wireless Audio Module

FINAL

7.3 PATTERN FOR PIN 79 ON THE MAIN BOARD

The copper pattern for pin 79 on the main board is very

important because it is part of the internal antenna of

the module. It is used to extend the internal antenna for

optimum RF performance.

The PCB pattern shown in Figure 19 under “pads C”

was used for pin 79 on the main board during module

certification.

7.4 PRECAUTIONS REGARDING UNINTENDED

COUPLING

The SC14WAMDECT SF includes an internal antenna,

so at integration on the main board precautions shall

be taken in order to avoid any kind of coupling from the

main board to the RF part of the module.

If there is any doubt about this, a brief radio test should

be performed.

Figure 14: Module placement on the main board (top view)

No PCB area

GND

Main board

Module

antenna extension

> 10 mm

No GND area

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