Application information

SPBT2532C2.AT2

20/27

Doc ID 023461 Rev 1

8

Application information

Here below there are some suggestions to better implement the module in the final

application.

●

Avoid that traces with switching signals are routed on the motherboard below the

module. The best condition would be to have a ground plane underneath the module

●

Connect the supply voltage ground of the module with the other grounds present on the

motherboard in a star ground configuration.

Keep the RF ground separate from the module supply voltage ground; the two grounds are

already connected inside the module in one point, a possible implementation can be seen in

Figure 9.

Figure 9.

Example of antenna integration on the STEVAL-SPBT2ATV3

8.1

Antenna choice

The RF output pin must be connected to an antenna which may be:

●

Antenna directly printed on the PCB (Figure 10)

●

Integrated SMD antenna, including but not limited to the following examples

(Figure 11):

–

Johanson Technology 2450T18A100S

–

Antenova 30-30-A5839-01

–

Murata ANCV12G44SAA127

–

Pulse W3008

–

Yageo CAN4311153002451K.

The external antenna connected by means of an SMA connector (Figure 12).