Silicon Laboratories EFR32MG13, Reference Manual

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Table 4.1. Bill of Materials for the BRD4174B Sub-GHz RF Matching Network
Component Name Value Manufacturer Part Number
L3 390 nH Murata LQW18ANR39G00D
L4 470 nH Murata LQW18CNR47J00D
L5 470 nH Murata LQW18CNR47J00D
L6 36 nH Murata LQW15AN36NG00D
L7 36 nH Murata LQW15AN36NG00D
L8 51 nH Murata LQW15AN51NG00D
L9 56 nH Murata LQW15AN56NG00D
L10 51 nH Murata LQW15AN51NG00D
C3 3.0 pF Murata GRM1555C1H3R0WA1D
C4 3.0 pF Murata GRM1555C1H3R0WA1D
C5 13 pF Murata GRM1555C1H130GA01D
C6 13 pF Murata GRM1555C1H130GA01D
C7 10 pF Murata GRM1555C1H100GA01D
C8 1 nF Murata GRM1555C1H102GA01D
C9 1 nF Murata GRM1555C1H102GA01D
C10 15 pF Murata GRM1555C1H150GA01D
C11 33 pF Murata GRM1555C1H330GA01D
C12 33 pF Murata GRM1555C1H330GA01D
C13 15 pF Murata GRM1555C1H150GA01D
C14 1 nF Murata GRM1555C1H102GA01D
4.5 Bill of Materials for the 2.4 GHz Matching
The Bill of Materials of the 2.4 GHz matching network of the BRD4174B Radio Board is shown in the following table.
Table 4.2. Bill of Materials for the BRD4174B 2.4GHz RF Matching Network
Component Name Value Manufacturer Part Number
L1 1.8 nH Murata LQP15MN1N8W02D
L2 3.0 nH Murata LQP15MN3N0W02D
C1 2.0 pF Murata GRM1555C1H2R0WA01D
C2 1.0 pF Murata GRM1555C1H1R0WA01D
4.6 Inverted-F Antenna
The BRD4174B Radio Board includes an on-board printed inverted-F antenna tuned for the 2.4 GHz band. Due to the design restric-
tions of the Radio Board, the input of the antenna and the output of the matching network can't be placed directly next to each other.
Therefore, a 50 Ohm transmission line was necessary to connect them. The resulting impedance and reflection measured at the output
of the matcing network are shown in the following figure. As it can be observed, the impedance is close to 50 Ohm (the reflection is
around or better than -10 dB) for the entire 2.4 GHz band.
BRD4174B Reference Manual
RF Section
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