Collocated omnidirectional dual-polarized antenna
AssigneeQUALCOMM Incorporated
InventorsLida Akhoondzadehasl, Allen Minh-Triet Tran, Mohammad Ali Tassoudji, Donald Farrell Breslin
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Abstract
An antenna structure is disclosed that includes a first antenna extending from a substrate, a second antenna formed on the substrate, and first and second parasitic elements formed on the substrate. The first antenna provides an omni-directional radiation pattern in the azimuth plane for vertically polarized signals, and the second antenna provides an omni-directional radiation pattern in the azimuth plane for horizontally polarized signals. The parasitic elements absorb and re-radiate electromagnetic waves radiated from the second antenna.
Claims32
An antenna structure, comprising:
- a substrate oriented in an azimuth plane;
- a first parasitic element formed on the substrate;
- a second parasitic element formed on the substrate;
- a first antenna coupled to the first parasitic element and extending from the substrate in a vertical direction, wherein the first antenna is to provide a first omni-directional radiation pattern in the azimuth plane for vertically polarized signals, wherein the first parasitic element comprises a ground plane of the first antenna;
- and
- a second antenna formed on the substrate and including a first radiating element, a second radiating element, the first parasitic element, and the second parasitic element, wherein the second antenna is to provide a second omni-directional radiation pattern in the azimuth plane for horizontally polarized signals shaped, at least in part, by the first and the second parasitic elements, and wherein the first and the second parasitic elements are electrically isolated from the first and the second radiating elements.
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The method of claim 19, wherein the first and second parasitic elements are to fill nulls in the second omni-directional radiation pattern, of the second antenna, that lie alongside the first and second parasitic elements.
A method of constructing an antenna structure that includes a substrate, the method comprising:
- forming a first parasitic element on the substrate;
- forming a second parasitic element on the substrate;
- coupling a first antenna to the first parasitic element, wherein the first antenna extends from the substrate in a vertical direction and is to provide a first omni-directional radiation pattern in an azimuth plane for vertically polarized signals, wherein the first parasitic element comprises a ground plane of the first antenna;
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- forming a second antenna on the substrate and including a first radiating element, a second radiating element, the first parasitic element and the second parasitic element, wherein the second antenna is to provide a second omni-directional radiation pattern in the azimuth plane for horizontally polarized signals shaped, at least in part, by the first and the second parasitic elements, and wherein the first parasitic element and the second parasitic elements are electrically isolated from the first and the second radiating elements.
A communication device, comprising:
- a radio chain;
- and
- an antenna structure coupled to the radio chain, the antenna structure comprising:
- a substrate oriented in an azimuth plane;
- a first parasitic element formed on the substrate;
- a second parasitic element formed on the substrate;
- a first antenna coupled to the first parasitic element and extending from the substrate in a vertical direction, wherein the first antenna is to provide a first omni-directional radiation pattern in the azimuth plane for vertically polarized signals, wherein the first parasitic element comprises a ground plane of the first antenna;
- and
- a second antenna formed on the substrate and including a first radiating element, a second radiating element, the first parasitic element and the second parasitic element, wherein the second antenna is to provide a second omni-directional radiation pattern in the azimuth plane for horizontally polarized signals shaped, at least in part, by the first and the second parasitic elements, and wherein the first and the second parasitic elements are electrically isolated from the first and the second radiating elements.
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Dependencies are inferred from the claim text.