User's Manual

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4. Antenna Information
4.1. Antenna type
EMW3081 have two antenna types: PCB built-in antenna and external antenna, the models are
EMW3081-P and EMW3081-E.
Figure4.EWM3081‐P
Figure5.EMW3081‐E
4.2. PCB antenna design requirements
Components are strictly forbidden to place in the surrounding 15mm of PCB antenna area in module.
Such the shaded area need away from metal devices, sensors, interference sources and other
materials may cause signal interference。