have to design an NFC system for contactless communication, first on a breadboard. How do I make an antenna and tune it?
I use copper wire of the appropriate length for antennas.
With the appropriate antenna design software, design a planar antenna that can be etched on a circuit board. Then manufacture the board.
Or just copy the reference design in the datasheet for the NFC chip you plan to use.
i also used copper wire for antenna. How can I tune it ? Is it necessary?
Of course it is necessary to tune the antenna. What does the data sheet recommend?