I'm using a STM32WB55RGV6 for a school senior design project. I am using it for its BLE purposes. I was wondering if the BLE has an internal antenna on the microcontroller. If not what external antenna could I use on my PCB?

[Imen.D]

Hello @TAlli.1​,

You can look on the AN5434 about on-board chip antenna which is included in STM32WB series:

• Low cost PCB antenna for 2.4 GHz radio: meander design for STM32WB Series - Application note

Imen