Multiband antenna for handheld terminal
First Claim
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1. A wireless device comprising:
- an external cover;
a printed circuit board comprising a plurality of conducting layers;
a dielectric support; and
an antenna system, the antenna system comprising;
a conducting radiating element, the conducting radiating element being arranged on the dielectric support; and
a ground plane acting in cooperation with the conducting radiating element, the ground plane being arranged as a conducting layer of the plurality of conducting layers of the printed circuit board;
wherein the printed circuit board, the dielectric support and the antenna system are arranged inside the external cover;
wherein the conducting radiating element comprises a feeding point, wherein the feeding point is a starting point for a first shorter arm and a second longer arm, said first and second arms form a multilevel structure for the antenna system;
wherein said first shorter arm extends along a direction;
wherein said second longer arm is folded upon itself and extends along the first shorter arm in the same direction, such that a gap between said first shorter arm and said second longer arm is formed;
wherein said first and second arms define similar winding paths;
wherein said gap follows a winding path substantially similar to the winding paths of said first and second arms;
wherein said multilevel structure comprises a conducting structure including a set of polygons, all of said polygons featuring the same number of sides, wherein said polygons are electromagnetically coupled either by means of a capacitive coupling or ohmic contact, wherein a contact region between directly connected polygons is smaller than 50% of a perimeter of said polygons in at least 75% of said polygons defining said multilevel structure; and
wherein the antenna system provides operability in multiple frequency bands.
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Abstract
A multiband antenna includes a first conducting layer and a second conducting layer. The first conducting layer acts as a radiating element being placed over the second conducting layer while the second conducting layer acts as a ground plane. The first conducting layer includes a feeding point, the feeding point being a starting point for a first shorter arm and a second longer arm, the first and second arms forming a multilevel structure for the multiband antenna.
51 Citations
44 Claims
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1. A wireless device comprising:
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an external cover; a printed circuit board comprising a plurality of conducting layers; a dielectric support; and an antenna system, the antenna system comprising; a conducting radiating element, the conducting radiating element being arranged on the dielectric support; and a ground plane acting in cooperation with the conducting radiating element, the ground plane being arranged as a conducting layer of the plurality of conducting layers of the printed circuit board; wherein the printed circuit board, the dielectric support and the antenna system are arranged inside the external cover; wherein the conducting radiating element comprises a feeding point, wherein the feeding point is a starting point for a first shorter arm and a second longer arm, said first and second arms form a multilevel structure for the antenna system; wherein said first shorter arm extends along a direction;
wherein said second longer arm is folded upon itself and extends along the first shorter arm in the same direction, such that a gap between said first shorter arm and said second longer arm is formed;wherein said first and second arms define similar winding paths; wherein said gap follows a winding path substantially similar to the winding paths of said first and second arms; wherein said multilevel structure comprises a conducting structure including a set of polygons, all of said polygons featuring the same number of sides, wherein said polygons are electromagnetically coupled either by means of a capacitive coupling or ohmic contact, wherein a contact region between directly connected polygons is smaller than 50% of a perimeter of said polygons in at least 75% of said polygons defining said multilevel structure; and wherein the antenna system provides operability in multiple frequency bands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A wireless device comprising:
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an external cover; a printed circuit board comprising a plurality of conducting layers; a dielectric support; and an antenna system, the antenna system comprising; a conducting radiating element, the conducting radiating element being arranged on the dielectric support; and a ground plane acting in cooperation with the conducting radiating element, the ground plane being arranged as a conducting layer of the plurality of conducting layers of the printed circuit board; wherein the printed circuit board, the dielectric support and the antenna system are arranged inside the external cover; wherein the conducting radiating element comprises a feeding point, wherein the feeding point is a starting point for a first shorter arm and a second longer arm, said first and second arms form a multilevel structure for the antenna system; wherein said first shorter arm extends along a direction; wherein said second longer arm is folded upon itself and extends along the first shorter arm in the same direction, such that a gap between said first shorter arm and said second longer arm is formed; wherein said first shorter arm comprises four rectangles, said four rectangles being sequentially interconnected through their shorter edges defining a winding path; wherein said second longer arm comprises seven rectangles, said seven rectangles being sequentially interconnected through their shorter edges defining a similar winding path; wherein said gap follows a winding path substantially similar to the winding paths of said first and second arms; and wherein the antenna system provides operability in multiple frequency bands. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification