STM32WLE5 Max allowed power on RFO_HP pin

[viola]

Hi ,

when the SUBGHZ block is in TX mode. 

if , for example , the COAX cable connected to the board SMA connector is suddenly disconnected during RF TX transmission .

what is the maximum allowed input power on the RFO_HP pin when operating in TX mode ? (due to Reflected RF power occurring from the suddenly disconnected cable)

thank you

viola

[STTwo-32 · Accepted solution]

Hello @viola 

the maximum VSWR is 10:1, from this you can calculate the value you want, starting from your Pout:

If Pout = 16 dBm, max reflected power is 14.27 dBm,

if Pout = 22 dBm, max reflected power is 20.25 dBm.

Best Regards.

STTwo-32

[viola]

Hi STTwo-32 ,

Thank you very much!

Viola