A capacitor includes a first conductive plate, a second conductive plate, a floating conductive plate and a dielectric material separating the floating conductive plate from the first conductive plate and from the second conductive plate. The floating conductive plate has a first surface closer to the first conductive plate than to the second conductive plate and has a second surface closer to the second conductive plate than to the first conductive plate. In response to an electric field between the first conductive plate and the second conductive plate, charge separation is induced in the floating conductive plate such that a first charge induced on the first surface has a first polarity and a second charge induced on the second surface has a second polarity, where the second polarity different from the first polarity.