Antenna system

An antenna system, comprising:

• a first antenna, comprising:
• a first feeding element, having a first feeding point;
• a first radiation element, coupled to the first feeding element;
• and
• a shorting element, wherein the first feeding element is coupled through the shorting element to a first grounding point;
• a second antenna, comprising:
• a second feeding element, having a second feeding point;
• a second radiation element, coupled to the second feeding element;
• and
• a third radiation element, coupled to the second feeding element, wherein the second radiation element and the third radiation element substantially extend in opposite directions;
• a first parasitic element, coupled to a second grounding point;
• and
• a second parasitic element, coupled to a third grounding point, wherein the first parasitic element and the second parasitic element are disposed between the first antenna and the second antenna, and the first parasitic element and the second parasitic element substantially extend away from each other;
• wherein the first antenna and the second antenna cover a first frequency band and a second frequency band;
• wherein a total length of the first feeding element and the first radiation element is from 0.15 to 0.2 wavelength of the first frequency band.