Tune NFC LC circuit #202
Description
For the prototype design, the LC circuit consisting of the antenna (L) and capacitors (C) are de-tuned.
On purpose the C values are chosen a bit too low, and there are unpopulated footprints to allow extra capacitance to be added to bring the LC oscillation frequency to ~13.56 MHz.
An IPEX connector is provided and 0 Ohm resistors, to disconnect the antenna from the MCU, to tune the circuit using a VNA.