Patent ID: 7427958

Claim:
A dual band antenna unit for a mobile device, the antenna unit comprising: a first antenna part having a resonant frequency corresponding to a first frequency band; a first contact point formed in the first antenna part at an upper portion thereof; a second contact point formed in the first antenna part at a lower portion thereof; a second antenna part formed integrally with the first antenna part and extending from the first antenna part, the second antenna part being extractably and retractably mounted in the mobile device, and when the second antenna is extracted, the second antenna part has a resonant frequency corresponding to a second frequency band; an antenna receiving part for receiving the first antenna part and the second antenna part; a first feed point formed in the antenna receiving part at a first position thereof; and a second feed point formed in the antenna receiving part at a second, lower position thereof than the first feed point; wherein extraction of the second antenna part connects the first contact point to the first feed point and retraction if the second antenna part connects the second contact point to the second feed point.