Micro strip antenna

1. A micro strip antenna, comprising:

a first dielectric substrate;

a main patch provided under the first dielectric substrate, the main patch having a triangle shape and configured to feed a radiation current;

a second dielectric substrate provided over the first dielectric substrate;

a sub patch provided under the second dielectric substrate and configured to receive the radiation current from the main patch in order to provide a vertical magnetic field, the sub patch comprising a plurality of sub patch units arranged in parallel; and

a plurality of ground patterns provided at predetermined portions of the first dielectric substrate, the predetermined portions corresponding to areas of the second dielectric substrate among the sub patch units.

2. The micro strip antenna according to claim 1 , further comprising:

a ground plane provided under the first dielectric substrate;

a coupling block provided under the ground plane and configured to feed a communication signal; and

a feeding wire configured to electronically couple the coupling block to a feeding unit of the main patch.

3. The micro strip antenna according to claim 1 , wherein each of the plurality of sub patch units has a shape comprising polygons and arcs.

4. The micro strip antenna according to claim 1 , wherein each of the plurality of ground patterns has a shape comprising polygons and arcs.

5. The micro strip antenna according to claim 1 , wherein the main patch comprises three rounded corners.

6. The micro strip antenna according to claim 1 , wherein:

the main patch includes a micro strip under the first dielectric substrate; and

the sub patch includes a micro strip under the second dielectric substrate.