An antenna structure includes a dipole antenna element, a closed-loop conductor, and a reflection plane. The effects of a first stage of turbulence of the induced air is reduced, resulting in a higher density supply to the atomization point and to the combustion chamber, in the case of an internal combustion engine. For example, when writing English words, the input panel may expand to the right as the user writes and then downward when the input panel has fully expanded rightward.