PCB Antenna Design for STM32WL55 at EU868 – Guidance Needed

[Nikunj_17]

Hello STM Community,

I am designing an internal PCB antenna for LoRa communication using the STM32WL55JCI7 at EU868 frequency. Is a PCB antenna recommended by STM for this chip? If so, what guidelines or procedures should I follow for designing a PCB antenna for LoRa communication? Additionally, what range can I expect with an optimized PCB antenna design?

Looking forward to your insights. Thanks!

[STTwo-32 · Accepted solution]

Hello @Nikunj_17 

There is not a particular design guide dedicated for antenna. But I may recommend you the:

• STM32 Hardware and RF guidelines 
• AN5407
• AN5457

You can also refer to the antenna of the MB1389.

Best Regards.

STTwo-32

[Nikunj_17]

Hello,
Thank you so much for your recommendation! Do you also have any reference board for a PCB antenna designed for LoRa communication at EU868?

[STTwo-32]

Such a design does not exist, but you can refer to the antenna design of the MB1389 that I've mentioned on my first comment.

Best Regards.

STTwo-32