How to measure/change the Output Power of the Tx and the receiver sensitivity for nRF52840?

RE: How to measure/change the Output Power of the Tx and the receiver sensitivity for nRF52840?

Prarthana — Mon, 11 Feb 2019 19:59:39 GMT

Thank you Awneil

RE: How to measure/change the Output Power of the Tx and the receiver sensitivity for nRF52840?

awneil — Mon, 11 Feb 2019 17:25:41 GMT

[quote userid="77181" url="~/f/nordic-q-a/43521/how-to-measure-change-the-output-power-of-the-tx-and-the-receiver-sensitivity-for-nrf52840/170448"]Is there any way I can improve the RSSI ?[/quote]

For any radio receiver, under given conditions, RSSI is affected by the transmitter power, and antenna gain.

https://en.wikipedia.org/wiki/Link_budget

RE: How to measure/change the Output Power of the Tx and the receiver sensitivity for nRF52840?

Prarthana — Mon, 11 Feb 2019 17:07:24 GMT

Hello,

Thank you for the response. So, I conducted few experiments and measured the RSSI value with the help of a code, I'm getting values in the range of -16 dBm to -44 dBm for CODED PHY, against the theoretical value of -103 dBm . What is your take on this ? Is there any way I can improve the RSSI ?

And also what according to you are the ideal values of output power and receiver sensitivity for which we can achieve the longest range?

RE: How to measure/change the Output Power of the Tx and the receiver sensitivity for nRF52840?

Håkon Alseth — Mon, 11 Feb 2019 10:32:05 GMT

Hi,

You can print the RSSI level (MSC described here), but you cannot do a full RF PHY evaluation by using two kits standalone.

For more detailed RF PHY performance, you will need some sort of test equipment, for instance a bluetooth tester. We use Anritsu MT8852B in our lab for testing against the direct_test_mode example.

Kind regards,

Håkon