5.4.2.4 Antenna Pattern Measurement in the 915 MHz Band
The measured typical antenna patterns are shown in the figures below.
0°
45°
90°
135°
180°
225°
270°
315°
-50
-40
-30
-20
-10
0
Normalized Radiation Pattern [dB], 915 MHz, YZ
cut
Horizontal
Vertical
0° at Z axis
0°
45°
90°
135°
180°
225°
270°
315°
-50
-40
-30
-20
-10
0
Normalized Radiation Pattern [dB], 915 MHz, XZ
cut
Horizontal
Vertical
0° at Z axis
0°
45°
90°
135°
180°
225°
270°
315°
-50
-40
-30
-20
-10
0
Normalized Radiation Pattern [dB], 915 MHz, XY
cut
Horizontal
Vertical
0° at X axis
Figure 5.6. Antenna Pattern - 915 MHz
5.5 EMC Compliance Recommendations
5.5.1 Recommendations for 868 MHz ETSI ETSI EN 300-200-1 compliance
As it was shown in the previous section, the BRD2600A board is compliant with the emission limits of the ETSI ETSI EN 300-200-1
regulation in the 868 MHz Band with 14 dBm output power.
5.5.2 Recommendations for 915 MHz FCC 15.247 compliance
To be compliant with the FCC 15.247 regulation, not only the emission limit requirements should be fulfilled, but (among others) the
6 dB bandwidth requirement as well.
Although with 14 dBm output power and unmodulated carrier the radiated 9th harmonic of the BRD2600A board exceeds its corre-
sponding limit, using a modulation scheme, that fulfills the 6 dB bandwidth requirement, the 9th harmonic has at least 3.3 dB margin.
Therefore the board is compliant with the emission limits of the FCC 15.247 regulation in the 915 MHz band with 14 dBm output power.
UG508: EFR32FG23 Dev Kit User's Guide
Radio
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