Multi-band monopole antennas for mobile communications devices
DCFirst Claim
1. A mobile communication device, comprising:
- a device housing;
a printed circuit board, the printed circuit board comprising;
a ground plane layer;
a feeding point;
a communication circuitry, the communication circuitry being mounted on the printed circuit board;
wherein the communication circuitry is coupled to the feeding point and to the ground plane layer;
a multi-band antenna capable of operating at multiple frequency bands, the multi-band antenna including an antenna element;
wherein the antenna element operates in cooperation with the ground plane layer;
the antenna element comprising;
a common conductor;
a first radiating arm connected to the common conductor;
a second radiating arm connected to the common conductor;
wherein the common conductor includes a feeding port, the feeding port being coupled to the feeding point;
wherein at least a portion of the first radiating arm and at least a portion of the second radiating arm are arranged on different planes;
wherein the first radiating arm is at least partially shaped according to a grid-dimension curve; and
wherein the printed circuit board, the communication circuitry, and the multi-band antenna are arranged inside the device housing.
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Abstract
Antennas for use in mobile communication devices are disclosed. The antennas disclosed can include a substrate with a base, a top, a front side and a back side; a first conductor can be located on the first side of the antenna substrate; and a second conductor can be located on the second side of the antenna substrate. The conductors can have single or multiple branches. If a conductor is a single branch it can, for example, be a spiral conductor or a conducting plate. If a conductor has multiple branches, each branch can be set up to receive a different frequency band. A conductor with multiple branches can have a linear branch and a space-filling or grid dimension branch. A conducting plate can act as a parasitic reflector plane to tune or partially tune the resonant frequency of another conductor. The first and second conductors can be electrically connected.
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Citations
45 Claims
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1. A mobile communication device, comprising:
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a device housing; a printed circuit board, the printed circuit board comprising; a ground plane layer; a feeding point; a communication circuitry, the communication circuitry being mounted on the printed circuit board; wherein the communication circuitry is coupled to the feeding point and to the ground plane layer; a multi-band antenna capable of operating at multiple frequency bands, the multi-band antenna including an antenna element; wherein the antenna element operates in cooperation with the ground plane layer; the antenna element comprising; a common conductor; a first radiating arm connected to the common conductor; a second radiating arm connected to the common conductor; wherein the common conductor includes a feeding port, the feeding port being coupled to the feeding point; wherein at least a portion of the first radiating arm and at least a portion of the second radiating arm are arranged on different planes; wherein the first radiating arm is at least partially shaped according to a grid-dimension curve; and wherein the printed circuit board, the communication circuitry, and the multi-band antenna are arranged inside the device housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A mobile communication device, comprising:
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a device housing; a printed circuit board, the printed circuit board comprising; a ground plane layer; a feeding point; a communication circuitry, the communication circuitry being mounted on the printed circuit board; wherein the communication circuitry is coupled to the feeding point and to the ground plane layer; a multi-band antenna capable of operating at multiple frequency bands, the multi-band antenna including an antenna element; wherein the antenna element is coupled to the feeding point and operates in cooperation with the ground plane layer;
the antenna element comprising;a first conductor, the first conductor comprising a first radiating arm having a grid-dimension section shaped according to a grid-dimension curve; a second conductor arranged at a predetermined distance from the first conductor and electromagnetically coupled to the first conductor, the second conductor comprising a planar section; and wherein the printed circuit board, the communication circuitry, and the multi-band antenna are arranged inside the device housing. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A mobile communication device, comprising:
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a device housing; a printed circuit board, the printed circuit board comprising; a ground plane layer; a feeding point; a communication circuitry, the communication circuitry being mounted on the printed circuit board; wherein the communication circuitry is coupled to the feeding point and to the ground plane layer; a multi-band antenna capable of operating at multiple frequency bands, the multi-band antenna including; a dielectric mounting structure having a plurality of surfaces; an antenna element, the antenna element being coupled to the feeding point and operating in cooperation with the ground plane layer; wherein the antenna element comprises a first radiating arm arranged on two or more surfaces of the plurality of surfaces of the dielectric mounting structure; the first radiating arm comprising; a first section shaped according to a grid-dimension curve; a second section connected to the grid-dimension section, the second section having a width different from a width of the first section; and wherein the printed circuit board, the communication circuitry, and the multi-band antenna are arranged inside the device housing. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification