Original patent design for Folded Dipole antenna

A folded dipole is an antenna with the ends folded back forming a loop. The impedance of this antenna is around 300 Ω, so you may want to use a transformer or a λ/4 long piece of 120 Ω coaxial or 75 Ω cable to match this impedance to 50 Ω. Geometry is not that critical.



Folded Dipole

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