It is made from standard paper glued to thin copper sheets. The resulted material is 0.25 mm thick, and is folded into water bomb bases, which interlock with each other, forming a tetrahedron. There is also a reflector and two strip detectors, both of which are attached to one side of the tetrahedron. The antenna achieves a peak gain of 9.6dBi at 2.6 GHz with an impedance bandwidth of 66% (2-4 GHz).
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