MIMO antenna and methods
First Claim
Patent Images
1. An antenna, comprising:
- a substantially planar substrate;
a first antenna component disposed in a first region of the substantially planar substrate; and
a second antenna component disposed in a second region of the substantially planar substrate;
wherein the first and second antenna components are further disposed such that a dipole axis of the first antenna component is substantially different in orientation from a dipole axis of the second antenna component; and
wherein the first and second antenna components comprise first and second radiator elements, respectively, and the first and second radiator elements are substantially mirror images of one another with respect to a plane that is resident between the first and second antenna components, the plane being orthogonal to the substantially planar substrate.
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Abstract
An antenna structure that provides spatial multiplexing capabilities. In one embodiment, the antenna comprises two antenna components with a substrate and radiator, the components being located on opposite sides of the circuit board of a radio device. Each antenna component operates in combination with the ground plane of the radio device to form a partial antenna, the operating band of which is below the frequency of 1 GHz. The ground plane and the feed points of the partial antennas are arranged so that the ‘dipole axes’ of the partial antennas have clearly different directions at the frequencies of said operating band.
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Citations
17 Claims
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1. An antenna, comprising:
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a substantially planar substrate; a first antenna component disposed in a first region of the substantially planar substrate; and a second antenna component disposed in a second region of the substantially planar substrate; wherein the first and second antenna components are further disposed such that a dipole axis of the first antenna component is substantially different in orientation from a dipole axis of the second antenna component; and wherein the first and second antenna components comprise first and second radiator elements, respectively, and the first and second radiator elements are substantially mirror images of one another with respect to a plane that is resident between the first and second antenna components, the plane being orthogonal to the substantially planar substrate. - View Dependent Claims (2, 3, 4, 5)
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6. A compact form-factor radio device, comprising:
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at least one wireless transceiver; a multiple input multiple output (MIMO) antenna in signal communication with the at least one transceiver, the antenna comprising; a substantially planar substrate; a first antenna component disposed in a first region of the substantially planar substrate, the first antenna component comprising a first radiator; and a second antenna component disposed in a second region of the substantially planar substrate, the second antenna component comprising a second radiator; wherein the first and second antenna components are further disposed such that a dipole axis of the first antenna component when operating at a frequency below 1 GHz is substantially different in orientation from a dipole axis of the second antenna component when operating at a frequency below 1 GHz; and a compact form factor housing substantially enclosing the at least one transceiver and the antenna; wherein the first radiator comprises a substantially mirror image shape of the second radiator at least with respect to a plane that is orthogonal with the substantially planar substrate; and wherein each of the first and second radiators is structured to run along a first surface of the respective antenna component, then onto another surface that is substantially perpendicular to the first surface, and then return onto the first surface.
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7. A multiple input multiple output (MIMO) antenna, comprising:
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a substantially planar substrate; a first antenna component disposed in a first region of the substantially planar substrate, the first antenna component comprising a first radiator; and a second antenna component disposed in a second region of the substantially planar substrate, the second antenna component comprising a second radiator; wherein the first and second antenna components are further disposed relative the substantially planar substrate and each other such that a radio frequency correlation of the first antenna component with the second antenna component in at least a first frequency band is minimized; wherein each of the first and second radiators is structured to run along a first surface of the respective antenna component, then onto another surface that is substantially orthogonal with the first surface, and then return onto the first surface. - View Dependent Claims (8, 9)
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10. An antenna of a radio device, comprising:
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a first antenna component with a first substrate and a first radiator; a second antenna component with a second substrate and a second radiator; and a ground plane between the first and second antenna components; wherein the first antenna component constitutes with the ground plane a first partial antenna which has a first feed point, and the second antenna component constitutes with the ground plane a second partial antenna which has a second feed point; wherein both the first and second partial antennas have an operating band below the frequency of 1 GHz, with the first and second antenna components located on different sides of a circuit board of the radio device in order to lower the correlation between the signals of the partial antennas; wherein the first and second feed points are located on the same side of the circuit board, the first feed point at an end of the first antenna component and the second feed point at an end of the second antenna component so as to further lower the correlation between the signals of the partial antennas in the operating band, the first and second feed points being disposed interior of the first and second antenna components, respectively; and wherein at least one of the first and second radiators traverses from its respective feed point via a side surface of the respective substrate to an upper surface thereof, and then subsequently returns to the side surface. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification