stm32wle5 bga package - output return loss measurement(tx mode)

[viola]

Hi ,

 

I am trying to measure the output return loss ( in tx mode) of my board rf chain which include the stm32wle5.

if i understnad correctly - in order to do that i need to put the STM32WLE5  in TX MODE which means its PA should be powered up and ready to transmit but without any transmitted data.  ( so that i will be able to measure the Return loss using external VNA connected to the TX RF PORT of my board)

is there an option to do that ?  i cant seem to find a way to make the internal PA ready to transmit (powered up) without actually transmitting .   is it possible to measure the output RL as i described ?

 

thank you,

viola

[STTwo-32]

Hello @viola 

May i know why are you interested in this? Are you experiencing unsatisfactory TX performance that is far from what is stated in the datasheet?

Best Regards.

STTwo-32