uwb antenna question

Rien Eradus PA0JME

A belgian radiofriend of mine just sent me this link and asked if this is a usefull antenna?
I am a bit puzzled how the feedline is configured,
Possibly the loops are resonant on frequencis ranging from 2.4 to 10.x GHz, but feeding those is to my mind a bit weird.
Any suggestions are welcome.

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