Dominik Kuhn- Optimazations:
- Trace width adjusted for a 50 Ohm antenna based on the JLCPCB impedance calculator.
- SMA connection mirrored, to remove a via to the upper side, which possibly made trouble.
- Ground area around the antenna trace in the clearance set to 10 mil as in the JLCPCB impedance calculator.
- Adding a 100nF ceramic capacitor (MLCC) close to the LoRa module.
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