1. An antenna device comprising: (a) a first plate structure; (b) a second plate structure; (c) a conductive member adapted to be capacitively coupled to the first plate structure at a first capacitance and adapted to be capacitively coupled to the second plate structure at a second capacitance, wherein the conductive member is adapted to transmit a signal; and (d) a dielectric layer between the conductive member, and the first and second plate structures.