nRF52832 supply voltage impact to RF performance

[ako]

Is there any impact for RF performance (TX power and sensitivity) if we are using 1.8V supply voltage instead of 3.0V for nRF52832?

[AmbystomaLabs]

Per the Nordic datasheet the 52832's full RF performance is available for system voltages to 1.8V. The radio runs at 1.3V which the internal DC/DC or internal LDO derives from your system voltage.
However, you should make sure that the ripple on your supply is very low, especially during a Tx burst since any system voltage below 1.7V will trigger a brownout reset.