Multi-band monopole antenna for a mobile communications device
First Claim
Patent Images
1. A multi-band mobile communications device comprising:
- a first circuit board comprising a ground plane, a feeding point, and communications circuitry, the feeding point being coupled to the communications circuitry;
a multi-band antenna coupled to the communications circuitry and mounted on the first circuit board, the multi-band antenna comprising;
a common conductor coupled to the feeding point;
a first radiating arm coupled to the common conductor; and
a second radiating arm coupled to the common conductor;
wherein a projection of a footprint of the multi-band antenna on a plane of the first circuit board intersects the ground plane; and
wherein the intersection of the projection and the ground plane is less than fifty percent of the projection.
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Abstract
A multi-band monopole antenna for a mobile communications device includes a common conductor coupled to both a first radiating arm and a second radiating arm. The common conductor includes a feeding port for coupling the antenna to communications circuitry in a mobile communications device. In one embodiment, the first radiating arm includes a space-filling curve. In another embodiment, the first radiating arm includes a meandering section extending from the common conductor in a first direction and a contiguous extended section extending from the meandering section in a second direction.
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Citations
20 Claims
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1. A multi-band mobile communications device comprising:
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a first circuit board comprising a ground plane, a feeding point, and communications circuitry, the feeding point being coupled to the communications circuitry; a multi-band antenna coupled to the communications circuitry and mounted on the first circuit board, the multi-band antenna comprising; a common conductor coupled to the feeding point; a first radiating arm coupled to the common conductor; and a second radiating arm coupled to the common conductor; wherein a projection of a footprint of the multi-band antenna on a plane of the first circuit board intersects the ground plane; and wherein the intersection of the projection and the ground plane is less than fifty percent of the projection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multi-band mobile communications device comprising:
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a first circuit board comprising a ground plane, a feeding point, and communications circuitry, the feeding point being coupled to the communications circuitry; a multi-band antenna coupled to the communications circuitry and mounted on the first circuit board, the multi-band antenna comprising; a common conductor coupled to the feeding point; a first radiating arm coupled to the common conductor; and a second radiating arm coupled to the common conductor; wherein the first radiating arm has a meandering section extending from the common conductor in a first direction and a substantially-straight section contiguous with the meandering section in a second substantially-opposite direction as the meandering section; wherein a projection of a footprint of the multi-band antenna on a plane of the first circuit board intersects the ground plane; and wherein the intersection of the projection and the ground plane is less than fifty percent of the projection. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A multi-band mobile communications device comprising:
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a first circuit board comprising a ground plane, a feeding point, and communications circuitry, the feeding point being coupled to the communications circuitry; a multi-band antenna coupled to the communications circuitry and mounted on the first circuit board, the multi-band antenna comprising; a common conductor coupled to the feeding point; a first radiating arm coupled to the common conductor; and a second radiating arm coupled to the common conductor; wherein the first radiating arm comprises a space-filling curve extending from the common conductor in a first direction and a contiguous extended substantially-straight section extending from a meandering section in a second direction, the contiguous extended substantially-straight section extending in a substantially-opposite direction as the meandering section; wherein a projection of a footprint of the multi-band antenna on a plane of the first circuit board intersects the ground plane; and wherein the intersection of the projection and the ground plane is less than fifty percent of the projection.
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Specification
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Current AssigneeFractus SA
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Original AssigneeFractus SA
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InventorsSanz, Alfonso, Puente Baliarda, Carles
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Primary Examiner(s)Ho, Tan
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Application NumberUS12/055,748Publication NumberTime in Patent Office713 DaysField of Search343/700.MS, 343/702US Class Current343/702CPC Class CodesH01Q 1/243 with built-in antennasH01Q 1/38 formed by a conductive laye...H01Q 19/005 Patch antenna using one or ...H01Q 21/30 Combinations of separate an...H01Q 5/371 Branching current pathsH01Q 9/40 Element having extended rad...H01Q 9/42 with folded element, the fo...
