Apex Flex sized T5577?

[Satur9]

I just made a post for this with pretty pictures.

What is an antenna, and why are NFC "antennas" weird?

So near field antennas like NFC and far field “transmissive” antennas like Bluetooth operate very differently and are mostly incompatible. This makes researching them very confusing because they’re both called antennas. The industry does that because they work on the same principal, just at different ends of the functional spectrum of what an antenna can do. [images_2] So the way a transmissive antenna generates signals and sends them out is: a pulse of current is sent through the antenna, whi…