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5.2 Antenna layout requirements
(1) For the installation position on the motherboard, the following two methods are recommended:
Solution 1: Put the module on the edge of the main board, and the antenna area extends out of the
edge of the main board.
Solution 2: Put the module on the edge of the motherboard, and hollow out an area at the antenna
position on the edge of the motherboard.
(2)In order to meet the performance of the on-board antenna, it is forbidden to place metal parts
around the antenna.
5.3 Power supply
(1) Recommended 3.3V voltage, peak current above 500mA
(2) It is recommended to use LDO for power supply; if using DC-DC, it is
recommended that the ripple be controlled within 30mV.
(3) The DC-DC power supply circuit is recommended to reserve the position of the
dynamic response capacitor, which can optimize the output ripple when the load
changes greatly.
(4) It is recommended to add ESD devices to the 3.3V power interface.
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