
The industrial AI edge gateway can be equipped with either LoRa or Wi-Fi 6 modules to achieve wireless AI data acquisition. The wireless module antenna port is susceptible to ESD damage and requires a TVS P4SMF3V3A in parallel on the RF path. Its VRWM=3.3V, junction capacitance 0.6pF, insertion loss <0.2dB, and the module power supply uses a series ferrite bead PBZ1608E600Z0T to suppress power supply noise. The Wi-Fi 6 MIMO RF switch control IO is equipped with an ESD 5V0D8B filter. Furthermore, an RC filter is added for LoRa spread spectrum chip reset to prevent false resets. Measured Wi-Fi 6 throughput is 900Mbps, with no ESD ±8kV interruption.