Mobile device supporting wideband operation

A mobile device supporting wideband operations, comprising:

• a feeding radiation element, having a feeding point;
• a first radiation element, wherein the first radiation element is adjacent to the feeding radiation element;
• a shorting radiation element, wherein the first radiation element is coupled through the shorting radiation element to a ground voltage;
• a second radiation element, coupled to the shorting radiation element;
• a third radiation element, coupled to the first radiation element, wherein the third radiation element is adjacent to the feeding radiation element;
• and
• a fourth radiation element, coupled to the ground voltage, wherein the fourth radiation element is adjacent to the feeding radiation element;
• wherein an antenna structure is formed by the feeding radiation element, the first radiation element, the shorting radiation element, the second radiation element, the third radiation element, and the fourth radiation element;
• wherein the feeding radiation element comprises a first portion and a second portion, and an obtuse angle is formed between the first portion and the second portion.