An antenna device, a positioning system and a positioning method are provided. The positioning method includes: dispersedly arranging a plurality of receivers to form a target area, in which each of the receivers includes the antenna device; receiving a wireless signal from the target area through the antenna device, and generating a difference signal strength and a sum signal strength; calculating, for each of the receivers, a sum-difference ratio between the difference signal strength and the sum signal strength, and estimating a corresponding one of estimated incident angles according to the sum-difference ratio and a comparison table; executing, in response to obtaining the estimated incident angles corresponding to the receivers, a positioning algorithm according to the estimated incident angles, so as to generate a plurality of possible positions; and executing an optimization algorithm to calculate a best estimated position of the possible positions.

A package structure is provided that includes a planar core structure comprising a first side and a second side opposite the first side. The package structure also includes an antenna structure disposed on the first side of the planar core structure. The antenna structure comprises a plurality of first laminated layers, each first laminated layer comprising a first patterned conductive layer formed on a first insulating layer, an antenna formed on one or more first patterned conductive layers of the first laminated layers, the antenna including at least one L-shaped structure. The package structure also includes an interface structure disposed on the second side of the planar core structure, and an antenna feed line structure formed in, and routed through, the interface structure and the planar core structure, wherein the antenna feed line structure is not connected to the planar antenna.

Methods and systems for implementing and operating antennas, particularly multiple-input and multiple-output (MIMO) antennas. An example antenna may include a planar dielectric substrate, a primary conductive area on a first surface of the planar dielectric substrate, a first secondary conductive area on the first surface, and a second secondary conductive area, and a ground plane on a second surface, on other side of the planar dielectric substrate. The primary conductive area may have a shape defining a first region of the first surface bounded by at least a portion of the primary conductive area, and a second region that includes a remaining portion of the first surface; a first secondary conductive area on the first surface, wherein the first secondary conductive area lies in the first region of the first surface. The second secondary conductive area may be provided on the first surface, and may lie in the second region.

An antenna apparatus includes a first antenna array that includes at least one antenna unit, and a first antenna unit in the at least one antenna unit includes a first patch subunit and a first feeder subunit. The first feeder subunit includes a first feeder and a second feeder. A first included angle θ between the first patch subunit and the first feeder satisfies 0<θ<90°. A second included angle β between the first feeder and the second feeder satisfies 0<β<180°.

An antenna module that includes an antenna substrate, a plurality of three-dimensional (3-D) antenna cells on a first surface of the antenna substrate, a plurality of packaged circuitry on a second surface of the antenna substrate, and a plurality of supporting balls mounted on the second surface of the antenna substrate. The plurality of packaged circuitry includes a plurality of radio-frequency (RF) chips on the second surface of the antenna substrate. Each of the plurality of 3-D antenna cells comprises a raised antenna patch with a plurality of projections and a plurality of supporting legs, where at least a relief cut is provided between one of the plurality of projections and one of the plurality of supporting legs.

An antenna structure, a circuit board with an antenna structure, and a communications device. The antenna structure includes a signal reference ground, a first radiation patch, a second radiation patch, and at least one feed probe. The feed probe is located between the first radiation patch and the ground. Each feed probe includes a first end and a second end. A projection position of the first end on a plane of the signal reference ground is outside a projection area of the first radiation patch on the plane of the signal reference ground is located, and a projection position of the second end on the plane of the signal reference ground is inside the projection area of the first radiation patch on the plane of the signal reference ground. The second end is electrically connected to the signal reference ground.

A liquid crystal antenna is provided. The liquid crystal antenna includes a first substrate, a second substrate, a liquid crystal layer, a plurality of transmission electrodes including a first transmission electrode and a second transmission electrode, a plurality of signal lines including a first signal line and a second signal line, a plurality of signal terminals including a first signal terminal and a second signal terminal, and a ground electrode. A transmission electrode is electrically connected to a signal terminal through at least one signal line. The first transmission electrode is connected to the first signal terminal through the first signal line, and the second transmission electrode is connected to the second signal terminal through the second signal line. A resistance of the first signal line is A, and a resistance of the second signal line is B, where A/B is less than 10.

An antenna structure according to an embodiment of the present disclosure includes an antenna unit array including a plurality of antenna units, and a parasitic element disposed to be adjacent to the antenna units and to be electrically and physically separated from the antenna units. Each of the antenna units includes a radiator, and a transmission line including a first transmission line and a second transmission line connected to the radiator in different directions. The parasitic element includes a first parasitic element disposed between the first transmission line and the second transmission line included in the same antenna unit, and a second parasitic element disposed between the first transmission line and the second transmission line included in different neighboring antenna units. The second parasitic element includes a branched portion including a first branched portion and a second branched portion bent in different directions.

An antenna device includes a ground plate, a first planar parasitic element provided, at a position overlapping the ground plate in a plan view, along the ground plate, the first planar parasitic element being provided away from the ground plate, a first ground element in a cylindrical shape, the first ground element including a first end connected to the ground plate and a second end connected to the first planar parasitic element, and a first monopole feeding element including a first feeding end and a first open end, the first feeding end being provided on a side of the ground plate and fed with power, and the first open end being provided in proximity to an edge of the first planar parasitic element.

An antenna suitable for use in the 5 GHz WLAN/Wi-Fi and DSRC frequency band is integrated with a vehicle window that is includes outer and inner transparent plies bonded together by an interlayer. The inner transparent ply and the interlayer serve as an antenna substrate. A first conductive layer is formed on the inner surface of the outer transparent ply and a second conductive layer that defines a coupling slot is formed on the outer surface of the inner transparent ply. The antenna may be excited by a coaxial cable or a microstrip line that crosses the coupling slot.