BIPOLAR ALTERNATIVE TO H BRIDGE

[JoyJo]

Do you mean that the connection of the TX coil is the same as in a full H-bridge? And connecting the TX cactus to the device unit via a differential cable: two strands twisted together?

[moodz]

You could isolate it by two caps but do you want multi frequency?

[JoyJo]

It is interesting to be able to work on a single frequency, but so that you can also get a multi-frequency mode.