5.1.4 Antenna
The BRD2601B has an on-board ceramic antenna.
The land pattern for the antenna on the PCB layout was designed based on the recommendations of the antenna datasheet. Due to the
fact that there is a significant difference between the layout (practically the board size) of the BRD2601B and the antenna evaluation
board, the applied antenna matching network deviates from the recommendation.
The values of the antenna matching network components were fine tuned to match the antenna impedance close to 50 Ohm on the
BRD2601B PCB. The resulting antenna impedance and reflection are shown in the figure below.
Figure 5.2. Fine Tuned Antenna Impedance (Blue Curve) and Reflection (Red Curve)
5.1.5 Antenna Matching Bill of Materials
The bill of materials for the BRD2601B antenna matching network is shown in the following table.
Table 5.2. Bill of Materials of the BRD2601B Antenna Matching Network
Component name
Value
Manufacturer
Part Number
ANT1
—
Johanson
2450AT18D0100
L3
1.5 nH
Murata
LQP03TN1N5B02D
C6
1.5 pF
Murata
GRM0335C1E1R5BA01D
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