Multi-band monopole antenna for a mobile communications device
DC CAFCFirst Claim
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1. A multi-band monopole antenna for a clamshell-type cellular device, comprising:
- a common conductor having a feeding port for coupling the antenna to circuitry in the clamshell-type cellular device;
a first radiating arm coupled to the common conductor and having a meandering section extending from the common conductor in a first direction and a contiguous extended substantially straight section extending from the meandering section in a second direction, the contiguous extended substantially straight section extending in a substantially opposite direction as the meandering section;
a second radiating arm coupled to the common conductor; and
wherein the clamshell-type cellular device is a clamshell-type cellular telephone that includes a hinge, and wherein the antenna is mounted within the clamshell-type cellular telephone adjacent to the hinge.
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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.
93 Citations
44 Claims
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1. A multi-band monopole antenna for a clamshell-type cellular device, comprising:
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a common conductor having a feeding port for coupling the antenna to circuitry in the clamshell-type cellular device; a first radiating arm coupled to the common conductor and having a meandering section extending from the common conductor in a first direction and a contiguous extended substantially straight section extending from the meandering section in a second direction, the contiguous extended substantially straight section extending in a substantially opposite direction as the meandering section; a second radiating arm coupled to the common conductor; and wherein the clamshell-type cellular device is a clamshell-type cellular telephone that includes a hinge, and wherein the antenna is mounted within the clamshell-type cellular telephone adjacent to the hinge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A mobile communications device, comprising:
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a circuit board having an antenna feeding point and a ground plane; communications circuitry coupled to the antenna feeding point of the circuit board; and a multi-band monopole antenna, including; a common conductor having a feeding port for coupling the antenna to the communications circuitry in the mobile communications device, wherein the mobile communications device is a cellular telephone; a first radiating arm coupled to the common conductor and having a meandering section extending from the common conductor in a first direction and a contiguous extended substantially straight section extending from the meandering section in a second direction, the contiguous extended substantially straight section extending in a substantially opposite direction as the meandering section; a second radiating arm coupled to the common conductor; wherein the circuit board is mounted in a first plane within the mobile communications device and the multi-band monopole antenna is mounted in a second plane within the mobile communications device; and wherein the mobile communications device is a clamshell-type cellular telephone that includes a hinge, and wherein the antenna is mounted within the mobile communication device adjacent to the hinge of the clamshell-type cellular telephone. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A multi-band monopole antenna for a mobile communications device, comprising:
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a common conductor having a feeding port for coupling the antenna to circuitry in the mobile communications device; a first radiating arm coupled to the common conductor and having a section comprising a space-filling curve extending from the common conductor in a first direction and a contiguous extended substantially straight section extending from the section comprising a space-filling curve in a second direction, the contiguous extended substantially straight section extending in a substantially opposite direction as the section comprising a space-filling curve; and a second radiating arm coupled to the common conductor. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A mobile communications device, comprising:
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a circuit board having an antenna feeding point and a ground plane; communications circuitry coupled to the antenna feeding point of the circuit board; and a multi-band monopole antenna, including; a common conductor having a feeding port for coupling the antenna to circuitry in the mobile communications device; a first radiating arm coupled to the common conductor and having a section comprising a space-filling curve extending from the common conductor in a first direction and a contiguous extended substantially straight section extending from the section comprising a space-filling curve in a second direction, the contiguous extended substantially straight section extending in a substantially opposite direction as the section comprising a space-filling curve; and a second radiating arm coupled to the common conductor. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A clamshell type multi-band mobile communications device, comprising:
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an upper circuit board; a lower circuit board including a ground plane, a feeding point and multi-band communications circuitry; a hinge connecting the lower circuit board to the upper circuit board enabling the upper and lower circuit boards to be folded together; a multi-band antenna comprising a first radiating arm coupled to a common conductor; and a second radiating arm coupled to the common conductor mounted on the lower circuit board adjacent to the hinge. - View Dependent Claims (37, 38)
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39. A clamshell type multi-band mobile communications device, comprising:
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an upper circuit board; a lower circuit board including a ground plane, a feeding point and communications circuitry; a multi-band antenna connected to the communications circuitry and mounted on the lower circuit board, the antenna having a common conductor connected to the feeding port for coupling the antenna to the communications circuitry in the mobile communications device; a first radiating arm coupled to the common conductor and a second radiating arm coupled to the common conductor; an upper housing and a lower housing hinged to one another and enclosing the upper and lower circuit boards, respectively, to also enclose the antenna and enable the housings and circuit boards to be selectively folded together into a clamshell configuration or opened out in a communications configuration; and wherein the lower circuit board is connected to the upper circuit board with a hinge enabling the upper and lower circuit boards to be folded together into a closed position. - View Dependent Claims (40, 41, 42, 43)
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44. A multi-band monopole antenna for a mobile communications device, comprising:
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a common conductor having a feeding port for coupling the antenna to circuitry in the mobile communications device; a first radiating arm coupled to the common conductor and having a meandering section extending from the common conductor in a first direction and a contiguous extended substantially straight section extending from the meandering section in a second direction, the contiguous extended substantially straight section extending in a substantially opposite direction as the meandering section, wherein the meandering section of the first radiating arm forms a space-filling curve; and a second radiating arm coupled to the common conductor.
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Specification