Extending BLE Range Between nRF52840 Device and Android App

RE: Extending BLE Range Between nRF52840 Device and Android App

dutar — Fri, 17 Jan 2025 09:56:03 GMT

Got it. Thanks!

RE: Extending BLE Range Between nRF52840 Device and Android App

ketiljo — Fri, 17 Jan 2025 08:57:35 GMT

Sunce you have no control of the output power on the phone side, there's no point of inreasing the outout power on one side. The only think you can do it to use a better antenna on "your" side of the link as this will help in both RX and TX directions.

RE: Extending BLE Range Between nRF52840 Device and Android App

dutar — Fri, 17 Jan 2025 07:35:57 GMT

Thanks, ketiljo.
So I guess nRF21540-based FEM can't solve our issue. Do you know any other module that could extend the BLE range between the nRF52840 device and the android?

RE: Extending BLE Range Between nRF52840 Device and Android App

ketiljo — Thu, 16 Jan 2025 12:35:42 GMT

The FW needs to be updates in order to control the FEM. In any case, you need a PA in both ends of the link to exend the range. And you will find it that it's not really possible to increase the output power above 10 dBm. The nRF52840 has already 8 dBm so will gain verry little by adding just 2 dB to this.