Hi Josh,
You're right - most of our competitors adopt differential architecture in their NFC frond end design.
However, they still do matching for the HF antenna, whereas they never do matching for LF front end.
As you said, the push-pull driver together with the resonator can act as a magnetic dipole.
In this way, do you have any idea why our competitor still do matching for their differential-output HF antenna? but not for LF antenna?
BR.
Philip