Source google image: https://slideplayer.fr/slide/5549090/17/images/5/2.+Repr%C3%A9senter+le+sch%C3%A9ma+normalis%C3%A9+d%E2%80%99un+montage.jpg
Schema electrique dipole
Source google image: https://slideplayer.fr/slide/5549090/17/images/5/2.+Repr%C3%A9senter+le+sch%C3%A9ma+normalis%C3%A9+d%E2%80%99un+montage.jpg