RE: Is there any Dc offset on nRF52840 RF port ?

Bjørn Kvaale — Thu, 28 Sep 2017 09:40:33 GMT

No problem. :)

RE: Is there any Dc offset on nRF52840 RF port ?

Artak — Wed, 27 Sep 2017 16:31:47 GMT

Hi Bjørn,

Thank you very much for the answer.

Regards, Artak

RE: Is there any Dc offset on nRF52840 RF port ?

Bjørn Kvaale — Wed, 27 Sep 2017 09:18:21 GMT

Hi Artak! Sorry for the delayed response. Talked to a colleague here at Nordic and he said that there is no DC offset on the nrf52840 port. You therefore don't need a DC blocking capacitor or a termination resistor either. Just attach the port directly to the antenna or whatever you plan to use the RF port for. There is an internal balun that ensures a DC short to ground. There are also some customers that use DC-shorted antennas or front-end modules that wouldn't work with a DC-offset on the antenna output. Hope that answers your question.

Kind Regards,

Bjørn