STM32WL5 Design review

[Nikunj_17]

Dear STM32 Community,

I am working on a PCB design for the STM32WL5 and would like to seek confirmation regarding my design approach. Specifically, in the top layer, I have an RF signal track, and in the second layer, there is a GND plane. However, I have cut the GND plane directly below the RF signal track.

Could you please confirm if this design approach adheres to best practices, or if there are any potential issues with this configuration? I would appreciate any guidance or suggestions based on your experience with STM32WL5 designs.

Looking forward to your feedback.

Thank you in advance!

[STTwo-32 · Accepted solution]

Hello @Nikunj_17 

Personally, i’m not a HW expert. I suggest you to have a look at this online training about RF hardware guidelines. It should be helpful. Also, the RF matching network guides are provided on the AN5457. If you want to have a help on the validation of your own design, you can contact a RF HW expert that can Check your full design.

Best Regards.

STTwo-32

[Nikunj_17]

Thank you so much for your answer. How do I connect with RF hardware experts?

[STTwo-32]

You can try to find an external HW expert. If you are looking for an ST Contact, you may try to contact one of our FAEs or Sales and marketing teams. Also, you may contact https://ols.st.com/s/ 

Best Regards.

STTwo-32

[Nikunj_17]

Thank you so much for your prompt response.