nRF21540 EK v1.0.0

RF measurements

The nRF21540 EK is equipped with SubMiniature Version A (SMA) connectors for easy connection to laboratory equipment.

Figure 1. Connecting a spectrum analyzer
Connecting a spectrum analyzer to the nRF21540 EK

When measuring, consider that the connector and test probe adds loss to the RF signal. See the following table for more information.

Table 1. Typical loss in connector and test probe
Frequency (MHz) Loss (dB)
2440 1.0
4880 1.7
7320 2.6