RF pattern for NRF24L01

[KTL]

Would like to know whether you have a diagram for the RF pattern for nRF24L01. Like whether the node can receive other nRF signals 360 degrees around or should be at some angle facing the transmitter etc. Also the range you can get inside a building for the nRF chip. Is this mentioned somewhere ?

[Håkon Alseth]

Hi,

The radiation pattern is depending on your antenna, and this must be measured in detail in an antenna lab. A typical antenna used with our radio's is a quarter-wave PCB-antenna. An ideal quarter-wave antenna radiates similar to a donut/bagel shape (if you google "quarter-wave antenna" you can see many calculated radiation patterns)

The radiation pattern is unique for each design, even if you use the same antenna on different designs. This is because the quarter-wave antenna is 50 ohm towards your PCB-ground.

The normal range (office environment) on our nRF-chips are: ~10 Meters if using 2MBit on-air datarate ~20 meters if using 1Mbit on-air datarate.

Best regards Håkon