TB-05 Specification V1.0.0
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Page 17 of 21
7.3. Antenna layout requirements
In the installation position on the motherboard, the following 2 methods are recommended:
Scheme 1: Place the module on the edge of the main board, and the antenna area extends out of
the edge of the main board
Scheme 2: Place the module on the edge of the motherboard, and the edge of the motherboard
hollowed out an area at the antenna position
In order to meet the performance of the on-board antenna, it is forbidden to place metal
parts around the antenna, away from high-frequency devices
Figure 12 Antenna Layout
7.4. Power supply
Recommended 3.3V voltage, peak current above 50mA
LDO is recommended for power supply; If DC-DC is used, it is recommended that the
ripple be controlled within 30mV
The DC-DC power supply circuit suggests to reserve the position of the dynamic response
capacitor, which can optimize the output ripple when the load changes greatly
It is recommended to add ESD devices to the 3.3V power interface
