Slot antenna having slots formed on both sides of dielectric substrate

1. A slot antenna, comprising;

slots formed on a top and a bottom of a dielectric substrate;

ground surfaces formed on the top and the bottom as a structure for defining the slots; and

a microstrip feed line formed on the top of the dielectric substrate, and electrically isolated from the ground surface on the top of the dielectric substrate, and

a connection unit connecting the microstrip feed line and the ground surface on the bottom of the dielectric substrate,

wherein a portion of the microstrip feed line is overlapped with the slots formed on the bottom of the dielectric substrate.

2. The slot antenna, according to claim 1 , wherein the electric fields on the top and the bottom of the dielectric substrate are generated in the same direction.