Why is the second "antenna matching network" not shown in the example?

siyar · ‎2025-05-09

Hi,

Im developing stm32wb55ceu6 RF application hardware. In the application note AN5290 it says that a second antenna matching network is needed after the LP filter . But i cant find anything else about this matching network.

Next page at the schematic example, this second antenna matching network is not implemented. can someone shed some light on the this topic, thanks in advance.

STTwo-32 · ‎2025-05-09

Hello @siyar

For more data about that, I suggest you have a look at this video. It should help you with good explanation. The figures are just stopped after the IPD directly. The second antenna matching is visible only on the full design. So, you have to follow the recommendations of the video and the RF matching paragraph.

Best Regards.

STTwo-32

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

View solution in original post

STTwo-32 · ‎2025-05-09

Hello @siyar

For more data about that, I suggest you have a look at this video. It should help you with good explanation. The figures are just stopped after the IPD directly. The second antenna matching is visible only on the full design. So, you have to follow the recommendations of the video and the RF matching paragraph.

Best Regards.

STTwo-32

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.