Embedded UWB antenna and portable device having the same
An embedded UWB antenna and a portable device having the same are disclosed. The embedded UWB antenna comprises a grounding element; a T-shaped radiating element having a horizontal portion comprising at least an opening for cutting off undesired frequency and a vertical portion comprising a feed point for feeding current to resonate frequency; and a plurality of sleeve elements extended from the grounding element along two sides of the vertical portion; wherein the plurality of sleeve elements and the vertical portion are substantially parallel to each other.
1. An embedded ultra-wide band antenna comprising:
a grounding element; a radiating element comprising a horizontal portion and a vertical portion, and the horizontal portion and the vertical portion together forms the radiating element substantially in a T shape, wherein the horizontal portion further comprises at least one closed opening for cutting off an undesired band group, the horizontal portion surrounds the closed opening, and the vertical portion further comprises a feed point for feeding current to resonate frequency; and
a plurality of sleeve elements respectively extending from the grounding element, wherein the plurality of sleeve elements comprise two substantially identical first sleeve elements respectively symmetrically located on both sides of the vertical portion and two substantially identical second sleeve elements respectively symmetrically located on the outer side of the first sleeve elements, the second sleeve elements being substantially shorter than the first sleeve elements, and the plurality of sleeve elements and the vertical portion being substantially parallel to each other and arranged in order of length to form a staircase shape.
2. The embedded ultra-wide band antenna as claimed in claim 1 , wherein the horizontal portion is substantially perpendicular to the vertical portion.
3. The embedded ultra-wide band antenna as claimed in claim 2 , wherein the at least one closed opening is substantially a strip-shaped closed opening.
4. The embedded ultra-wide band antenna as claimed in claim 1 , wherein the at least one closed opening comprises substantially two strip-shaped closed openings, and the distance between the two strip-shaped closed openings is substantially equal to the width of the vertical portion.
5. A portable electronic device comprising a wireless transmission module and an embedded ultra-wide band antenna, wherein the wireless transmission module is electrically connected with the embedded ultra-wide band antenna to transmit data wirelessly, wherein the embedded ultra-wide band antenna comprises:
a grounding element; a radiating element comprising a horizontal portion and a vertical portion, the horizontal portion and the vertical portion together forms the radiating element substantially in a T shape, wherein the horizontal portion further comprises at least one closed opening for cutting off an undesired band group, the horizontal portion surrounds the closed opening, and the vertical portion further comprises a feed point for feeding current to resonate frequency; and
a plurality of sleeve elements respectively extending from the grounding element, wherein the plurality of sleeve elements comprise two substantially identical first sleeve elements respectively symmetrically located on both sides of the vertical portion and two substantially identical second sleeve elements respectively symmetrically located on the outer side of the first sleeve elements, and the plurality of sleeve elements and the vertical portion being substantially parallel to each other and arranged in order of length to form a staircase shape.
6. The portable electronic device as claimed in claim 5 , wherein the portable electronic device is substantially a mobile phone, a global positioning system, a personal digital assistant, or a notebook.
7. The portable electronic device as claimed in claim 5 , wherein the horizontal position of the embedded ultra-wide band antenna is substantially perpendicular to the vertical portion of the embedded ultra-wide band antenna.
8. The portable electronic device as claimed in claim 7 , wherein the at least one closed opening of the embedded ultra-wide band antenna comprises substantially a strip-shaped closed opening.
9. The portable electronic device as claimed in claim 5 , wherein the at least one closed opening of the embedded ultra-wide band antenna comprises substantially two strip-shaped closed openings, and the distance between the two strip-shaped openings is substantially equal to the width of the vertical portion.