Antenna module and a wireless device having the same

An antenna unit, comprising:

• a substrate including a signal transmitting path;
• a first dielectric layer disposed on the substrate;
• an inner layer disposed on the first dielectric layer;
• a signal feeding via coupled between a first patch and the signal transmitting path through the inner layer and the first dielectric layer;
• a second dielectric layer disposed on the first patch and the inner layer;
• a second patch disposed on the second dielectric layer in response to the first patch;
• and
• a plurality of vias arranged around the second patch, wherein each of the vias coupled between a metal frame and the first dielectric layer through the second dielectric layer and the inner layer.