Antenna System Having Compact PIFA Resonator with Open Sections
First Claim
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1. An antenna system for a wireless communications device comprising:
- a ground plane conductor defined at least by portions of a printed wiring board of the wireless communications device, said ground plane conductor defining a pair of longitudinal ends; and
a PIFA-fed resonator having a ground end and a free end, with said ground end being electrically coupled to the ground plane conductor at a ground point located a distance away from one of said pair of longitudinal ends, and with the resonator defining a feed point within the region between the ground point and said one longitudinal end, wherein at least a portion of the resonator between the feed point and the free end overlays the ground plane conductor and another portion of the resonator defines an open section relative to the ground plane conductor.
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Abstract
A low-height PIFA-fed antenna system having high gain, wide bandwidth and wide beamwidth for applications on wireless communications devices. The antenna is suitable for internal installation within a handset, such as a cellphone. The antenna includes a ground plane conductor, such as the ground plane of a wireless device, and a resonator element having a top portion with a split free end defining an open space. The antenna is well adapted for high volume manufacturing processes using conventional fabrication techniques such as metal stamping or selectively plated plastic.
15 Citations
20 Claims
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1. An antenna system for a wireless communications device comprising:
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a ground plane conductor defined at least by portions of a printed wiring board of the wireless communications device, said ground plane conductor defining a pair of longitudinal ends; and a PIFA-fed resonator having a ground end and a free end, with said ground end being electrically coupled to the ground plane conductor at a ground point located a distance away from one of said pair of longitudinal ends, and with the resonator defining a feed point within the region between the ground point and said one longitudinal end, wherein at least a portion of the resonator between the feed point and the free end overlays the ground plane conductor and another portion of the resonator defines an open section relative to the ground plane conductor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An antenna system for a wireless communications device comprising:
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a ground plane conductor defined at least by portions of a printed wiring board of the wireless communications device, said ground plane conductor defining a pair of longitudinal ends; and a PIFA-formed resonator having a ground end and a free end, with said ground end being electrically coupled to the ground plane conductor at a ground point located a distance away from one of the pair of longitudinal ends, and with the conductor defining a feed point within the region between the ground point and said one longitudinal end, wherein said resonator includes a top portion having a sheet conductor and an open section proximate to said free end. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. An antenna system for a wireless communications device comprising:
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a ground plane conductor defined at least by portions of a printed wiring board of the wireless communications device, said ground plane conductor defining a pair of longitudinal ends and a pair of lateral sides, and said ground plane conductor having an open ground plane extension portion proximate to one of said pair of longitudinal ends; and a PIFA-formed resonator having a ground end and a free end, with said ground end being electrically coupled to the ground plane conductor at a ground point located a distance away from one of the pair of longitudinal ends, and with the conductor defining a feed point within the region between the ground point and said one longitudinal end, wherein a top leg of the resonator includes an open section. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification