Compact dual frequency antenna with multiple polarization
AssigneeTyco Electronics Logistics AG
InventorsDonald Keilen, Patrick McKivergan, Matthew Commens, Robert Hill
Life of this patent
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Abstract
An asymmetrical dipole antenna is disclosed consisting of a planar conductor, matching network, and resonator. The antenna is compact, may operate on one or more frequency bands, and is suitable for high volume production. The antenna exhibits simultaneous dual linear polarizations and a unidirectional pattern in at least one of its operating frequency ranges when configured for multiple-band operation. Applications for the antenna include wireless communication devices such as cellular telephones or data devices.
Claims23
An antenna assembly for use in a wireless communications device having a ground plane and a signal port, the antenna assembly comprising:
- a matching network having a plurality of separate conductive sections, including a first conductive section defining a feed point connected to the signal port, and a second conductive section connected to the ground plane;
- an open-ended dual frequency conductive resonator element having a first region sized to effectively resonate over a first predetermined frequency band and a second region sized to effectively resonate over a second predetermined frequency band, said resonator element being disposed a predetermined distance away from the ground plane, and
- a plurality of conductive connection elements, including at least a first connection element connected between the matching network and the resonator element, and a second connection element connected between the resonator element and the ground plane.
An antenna assembly for use in a wireless communications device, the antenna assembly comprising:
- a conductive ground plane defined upon a surface of a first dielectric board element;
- a matching network defined upon a surface of the first dielectric board element, said matching network having a plurality of separate conductive sections including a first conductive section defining a feed point connected to the signal port, and a second conductive section connecting to the ground plane;
- an open-ended dual frequency conductive resonator element defined upon a surface of a second dielectric board element, said resonator element having a first region sized to effectively resonate over a first predetermined frequency band and a second region sized to effectively resonate over a second predetermined frequency band, said resonator element being disposed a predetermined distance away from the ground plane, and
- a plurality of conductive connection elements, including at least a first conductive connection element connected between the matching network and the resonator element, and a second conductive connection element connected between the resonator element and the ground plane.
An antenna assembly for use in a wireless communications device, the antenna assembly comprising:
- a dielectric board element having a plurality of electronic components disposed thereupon;
- a ground plane disposed upon the dielectric board element;
- a conductive matching network disposed upon a surface of the dielectric board element, said matching network having a plurality of separate conductive sections including a first conductive section defining a feed point connected to the signal port, a second conductive section connecting to the ground plane, and a conductive third section;
- an open-ended dual frequency conductive resonator element disposed upon a surface of a second dielectric board element, said resonator element having a first region sized to effectively resonate over a first predetermined frequency band and a second region sized to effectively resonate over a second predetermined frequency band, said resonator element being disposed a predetermined distance away from the ground plane, and
- a plurality of conductive connection elements, including at least a first conductive connection element connected between the matching network and the dual frequency conductive element, and a second conductive connection element connected between the dual frequency conductive element and the ground plane.
Dependencies are inferred from the claim text.