Mobile device and antenna structure thereof

The invention provides a mobile device and an antenna structure thereof. The antenna structure is put next to the pivot structure of the mobile device, and a parasitic element is put next to the high-frequency radiating element extending from a feed-in member to couple and resonate with the high-frequency radiating element to produce a resonance mode for compensating for the narrow bandwidth of ahigh-frequency band. 本发明提供一种移动装置及其天线结构。将天线结构放置在移动装置的枢轴结构旁，并在自馈入件延伸出的高频辐射件旁设置寄生元件，以与高频辐射件耦合共振以产生弥补高频频带频宽的不足的共振模态。