Glass antenna system for mobile communication

A glass antenna system for mobile communication, comprising a window glass and an antenna pattern, the antenna pattern comprising:

• a U-shaped antenna pattern, in which one end of a substantially straight first radiation antenna pattern and one end of a substantially straight second radiation antenna pattern are coupled by a coupling pattern that is substantially perpendicular to the first and second radiation antenna patterns;
• wherein the longitudinal direction of the coupling pattern is arranged substantially in parallel to a rectangular grounding pattern;
• wherein a length of the first radiation antenna pattern is different from a length of the second radiation antenna pattern;
• wherein the rectangular grounding pattern is arranged below the U-shaped antenna pattern;
• wherein a core conductor of a coaxial cable is connected to the U-shaped antenna pattern, and a braided conductor of the coaxial cable is connected to the grounding pattern;
• wherein an impedance-adjusting pattern is provided on a lateral portion of the grounding pattern;
• and
• wherein the U-shaped antenna pattern, the rectangular grounding pattern and the impedance-adjusting pattern are positioned on the window glass.