Capacitive grounding methods and apparatus for mobile devices
First Claim
1. A mobile wireless device, comprising:
- one or more antenna elements;
a main body portion, said main body portion comprising at least a metalized surface, at least a portion of said metalized surface being disposed on an external surface of said main body portion; and
a back cover portion, said back cover portion at least partly capacitively coupled to a device ground of said mobile wireless device via said metalized surface of said main body portion;
wherein said metalized surface is disposed between said back cover portion and said device ground, said metalized surface being galvanically coupled to said device ground.
1 Assignment
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Accused Products
Abstract
Grounding apparatus for mobile devices and methods of utilizing and manufacturing the same. In one embodiment, an outer metallized surface of a mobile device is configured to capacitively couple a metal back cover to the device ground. Specifically, in one implementation, an exterior surface of the mobile device is metalized and coupled to the device ground via galvanic contacts. The exterior metalized surface is configured to be capacitively coupled a metal back cover of a mobile device to the device ground when the back cover is installed on the mobile device. By capacitively coupling the back cover to the device ground via the exterior metalized surface, the need to otherwise ground the back cover through the use of galvanic contacts is obviated, thereby reducing the number of components needed.
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Citations
19 Claims
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1. A mobile wireless device, comprising:
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one or more antenna elements; a main body portion, said main body portion comprising at least a metalized surface, at least a portion of said metalized surface being disposed on an external surface of said main body portion; and a back cover portion, said back cover portion at least partly capacitively coupled to a device ground of said mobile wireless device via said metalized surface of said main body portion; wherein said metalized surface is disposed between said back cover portion and said device ground, said metalized surface being galvanically coupled to said device ground. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An antenna apparatus, comprising:
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at least one radiator element comprising; a feed point; and a conductive element coupled to said feed point; a dielectric substrate having a plurality of surfaces, said dielectric substrate comprising said least one radiator element and a metal surface; and a ground plane coupled to a ground of a host device; wherein said metal surface is configured to capacitively couple at least a portion of a back cover of said host device to said ground of said host device; and wherein said dielectric substrate is disposed between at least said portion of said back cover and said metal surface, and at least a portion of said metal surface is disposed between said dielectric substrate and said ground plane. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for grounding one or more components of a mobile wireless device, said method comprising:
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metalizing at least an exterior portion of a main body of said mobile wireless device; connecting said metalized exterior portion to a ground of said mobile wireless device using at least one galvanic contact; and disposing a back cover over said metalized exterior portion of said main body to achieve capacitive coupling of at least a portion of said back cover of said mobile wireless device to said metalized exterior portion, said capacitive coupling configured to ground said metalized exterior portion to said ground of said mobile wireless device. - View Dependent Claims (18, 19)
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Specification