Antenna Matching Bill Of Materials; Emc Regulations For 2.4 Ghz; Etsi En 300-328 Emission Limits For The 2400-2483.5 Mhz Band; Fcc15.247 Emission Limits For The 2400-2483.5 Mhz Band - Silicon Laboratories BG22 Explorer Kit User Manual

5.1.5 Antenna Matching Bill of Materials

The BRD4108A antenna matching network bill of materials is shown in the following table.
Component name
ANT1
Z7
Z9

5.2 EMC Regulations for 2.4 GHz

5.2.1 ETSI EN 300-328 Emission Limits for the 2400-2483.5 MHz Band

Based on ETSI EN 300-328, the allowed maximum fundamental power for the 2400-2483.5 MHz band is 20 dBm EIRP. For the unwan-
ted emissions in the 1 GHz to 12.75 GHz domain, the specified limit is -30 dBm EIRP.

5.2.2 FCC15.247 Emission Limits for the 2400-2483.5 MHz Band

FCC 15.247 allows conducted output power up to 1 Watt (30 dBm) in the 2400-2483.5 MHz band. For spurious emissions the limit is
-20 dBc based on either conducted or radiated measurement, if the emission is not in a restricted band. The restricted bands are speci-
fied in FCC 15.205. In these bands the spurious emission levels must meet the levels set out in FCC 15.209. In the range from
960 MHz to the frequency of the 5th harmonic, it is defined as 0.5 mV/m at 3 m distance (equals to -41.2 dBm in EIRP).
In case of operating in the 2400-2483.5 MHz band the 2nd, 3rd and 5th harmonics can fall into restricted bands, so for those the
-41.2 dBm limit should be applied. For the 4th harmonic, the -20 dBc limit should be applied.

5.2.3 Applied Emission Limits

The overall applied limits are shown in the table below. For the harmonics that fall into the FCC restricted bands, the FCC 15.209 limit
is applied, and the ETSI EN 300-328 limit is applied for the rest.
Harmonic
2nd
3rd
4th
5th
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Table 5.2. BRD4108A Antenna Matching Network Bill of Materials
Value Manufacturer
– Johanson
16 nH Murata
1.6 pF Murata
Table 5.3. Applied Limits for Spurious Emissions
Frequency
4800~4967 MHz
7200~7450.5 MHz
9600~9934 MHz
12000~12417.5 MHz
UG509: BG22 Explorer Kit User's Guide
Part Number
2450AT18D0100
LQP03TN16NJ02D
GRM0335C1H1R6BA01D
Limit
-41.2 dBm
-41.2 dBm
-30 dBm
-41.2 dBm
Radio
Rev. 1.1 | 17