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US 2002/0175871 A1Published application
Antenna
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMartin Johansson, Stefan Lindgren, Anna Grincwajg
Life of this patent
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AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMartin Johansson, Stefan Lindgren, Anna Grincwajg
Estimating the term…
A stacked patch antenna comprising two metallic patches (210, 240) stacked on top of each other. The middle patch (210) comprises at least two conductors (224, 234) at or close to its edge (212), which conductors are intended to be connected to a ground plane (200) to thereby ground the patch in two places. The top patch (240) comprises at least two conductors (254, 264) at or close to its edge (242) which electrically interconnect the two patches. The middle patch is fed at a feed area (219) which is at least proximate its geometric center. The middle patch further comprises at least two apertures (220, 230) completely within its circumference (212), i.e. each aperture having a respective unbroken circumference (232, 242). Thereby enabling radiation from slots (214, 216, 244, 246) defined by the edge of the top patch and the edge of the middle patch and defined by the edge of the middle patch and the ground plane.
A low profile antenna structure, characterized in that it comprises a first metallic patch (210) and a second metallic patch (240) stacked over a ground plane (200), the first patch comprising a circumference along a patch edge (212) of the first patch, the second patch comprising a circumference along a patch edge (242) of the second patch, the first patch being arranged between the ground plane and the second patch, the first patch being grounded at at least a first zero potential area (226) by electrical connection (224) with the ground plane and a second zero potential area (236) by electrical connection (234) with the ground plane and being fed at a single feed area (219), the second patch being electrically interconnected (254, 264) to the first patch, and the first patch comprises at least a first aperture (220) and a second aperture (230) located completely within the circumference of the first patch to thereby force current propagating from the feed area to the first zero potential area and the second zero potential area, toward the patch edge of the first patch to thereby enable radiation from slots (214, 216, 244, 246) defined by the edge of the first patch and the edge of the second patch and the ground plane.
A low profile antenna structure, characterized in that it comprises a first metallic patch (210, 310, 410, 510) and a second metallic patch (240, 481, 482) stacked over the first patch, the patches being intended to be mounted over a ground plane (200, 400), the first patch comprising a circumference along a patch edge (212, 312) of the first patch, the second patch comprising a circumference along a patch edge (242) of the second patch, the first patch being arranged between the ground plane and the second patch, the first patch comprising a first zero potential area (226, 326, 526) by connection (224, 324, 424, 524) with the ground plane and a second zero potential area (236, 336, 536) by connection (234, 334, 434, 534) with the ground plane, the second patch being electrically interconnected (254, 264, 354, 364, 454, 464) to the first patch, and the antenna being fed at a single feed area (219, 319, 419, 519) comprised on the first patch, and the first patch comprises at least a first aperture (220, 320, 420, 520) and a second aperture (230, 330, 430, 530) located completely within the circumference of the first patch to thereby force current, propagating from the feed area to the first zero potential area and the second zero potential area, toward the patch edge of the first patch to thereby enable radiation from slots (214, 216, 244, 246, 315, 317) defined by the edge of the first patch and the edge of the second patch and the ground plane.
Dependencies are inferred from the claim text.