nrf24l01 limit the signal range

[Ivan]

I'm working with nrf24l01 module and use it in BLE beacon mode.

My main question is how can I decrease the visibility range to 10 - 20 santimeters?

(by some schematic tricks with antenna or some software TX power settings)

kind regards

Ivan.

[Andreas]

Hi,

 

You can try to cut the trace between the VDD_PA pin and C3 in the matching network (see the PS if you are uncertain). This will remove the power supply from the radio front-end, significantly reducing the output power. Exactly how much the range will decrease you will have to try for yourself. Also if you do not want to destroy your module, you can try to desolder L2, but keep in mind that if you proceed with this option, L2 is needed for LO rejection, in which case you will have to cut/remove the mentioned trace in the end.

 

Best regards,

Andreas

[Ivan]

great! But can you send a link on original schematic you used, cuz my I think a bit differs in elements numbering

[Andreas]

Hi,

 

You can find the PS here, the schematic is on page 66.

 

Best regards,

Andreas