A radiation conductor is constructed of a metal plate having a pair of main surfaces pointing in opposite directions. Each main surface of the pair of main surfaces includes a first surface region that includes at least part of a peripheral edge portion of the main surface. At least one main surface of the pair of main surfaces includes a second surface region that is a region other than the first surface region. A dielectric member holds the radiation conductor in such a manner that the first surface region of each main surface of the pair of main surfaces is sandwiched between portions of the dielectric member in a thickness direction of the radiation conductor. A housing supports and accommodates the dielectric member. The second surface region of the at least one main surface is exposed.

A radiation conductor is constructed of a metal plate having a pair of main surfaces pointing in opposite directions. Each main surface of the pair of main surfaces includes a first surface region that includes at least part of a peripheral edge portion of the main surface. At least one main surface of the pair of main surfaces includes a second surface region that is a region other than the first surface region. A dielectric member holds the radiation conductor in such a manner that the first surface region of each main surface of the pair of main surfaces is sandwiched between portions of the dielectric member in a thickness direction of the radiation conductor. The second surface region of the at least one main surface is exposed.

An antenna structure is provided. The antenna structure includes at least one feeder, a plurality of dielectric substrates, a plurality of conductive plates disposed between the plurality of dielectric substrates, the plurality of conductive plates including at least one opening, and a radiator electrically connected to the at least one feeder through conductive vias in the plurality of dielectric substrates and the plurality of conductive plates. The radiator includes a plurality of first parasitic conductive plates spaced apart from each other, and a second parasitic conductive plate disposed between the plurality of first parasitic conductive plates, the second parasitic conductive plate being spaced apart from the plurality of first parasitic conductive plates.

The present disclosure provides an antenna apparatus and a circuit board thereof for an RFD device to provide wide field effect coverage. The antenna apparatus includes a housing having a concavity defined therein, a printed circuit board disposed inside the concavity of the housing, two plates respectively located on opposite side portions of the circuit board, and a metal pattern sandwiched between and wirelessly coupled to the two plates. By disposing the metal pattern at the central portion of the circuit board and sandwiched between and coupled to the two plates, the field effect is enhanced, and the sensitivity of the antenna apparatus when detecting an object passing through the field (near field detection) is improved.

An electronic device may include a millimeter wave transceiver, a first antenna having a first resonating element at a first side of a substrate, and a second antenna having a second resonating element at a second side of the substrate. A first coplanar waveguide may convey millimeter wave signals between the transceiver and the first resonating element and a second coplanar waveguide may convey millimeter wave signals between the transceiver and the second resonating element. The first coplanar waveguide may be coupled to the first resonating element through the second coplanar waveguide. The second coplanar waveguide may be coupled to the second resonating element through the first coplanar waveguide. Ground conductors in the coplanar waveguides may form antenna ground planes for the first and second antennas while serving to maximize electromagnetic decoupling between the coplanar waveguides and thus isolation between the ports of the transceiver.

An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more antenna structures and transceiver circuitry such as millimeter wave transceiver circuitry. Antenna structures in the wireless circuitry may include patch antennas that are organized in a phased antenna array. Each patch antenna may include an antenna resonating element and a parasitic element. The parasitic element for the patch antenna may have dielectric-filled openings formed between coplanar parasitic conductors. The parasitic conductors may include a central parasitic conductor, four rectangular parasitic conductors formed around the central parasitic conductor, and corner parasitic conductors formed at the corners of the parasitic element. The corner parasitic conductors may be non-rectangular. For example, the corner parasitic conductors may have first and second perpendicular edges and a straight or curved third edge that joins the first and second edges.

The invention refers to a radiating element comprising a support structure, a first dipole arranged on the support structure, and at least one electrically closed ring arranged on the support structure, wherein the ring surrounds the first dipole and is galvanically isolated from the first dipole, wherein a resonance frequency of the first dipole is higher than a center frequency of an operational bandwidth of the radiating element.

An antenna assembly is disclosed including a ground plane having a first longitudinal edge and a second longitudinal edge. The first and second longitudinal edges may extend in a longitudinal direction and may be spaced apart in a lateral direction that is perpendicular to the longitudinal direction. The ground plane may define a first plurality of slots that are open to the first longitudinal edge and a second plurality of slots that are open to the second longitudinal edge. The antenna assembly may also include a patch antenna spaced apart from the ground plane and arranged in parallel with the ground plane. The patch antenna may have a pair of opposite edges and may define a first plurality of slots that are open to one of the pair of opposite edges of the patch antenna. In some embodiments, the antenna assembly may include one or more parasitic elements that also define a plurality of slots.

A millimeter wave antenna device includes an antenna array, a first parasitic element and a second parasitic element. The antenna array includes mn antennas and is disposed in an antenna area. The first parasitic element is disposed beside a first side of the antenna area. The second parasitic element is disposed beside a second side of the antenna area. None of the first parasitic element and the second parasitic element overlaps with the antenna area.

A wireless communication device is provided that has an RFIC element including first and second terminal electrodes, a first radiation electrode connected to the first terminal electrode of the RFIC element, a second radiation electrode disposed in the same layer as the first radiation electrode independently of the first radiation electrode and connected to the second terminal electrode of the RFIC element, and a back surface electrode disposed oppositely to the second radiation electrode at a distant and connected to the second radiation electrode. Moreover, an area of a portion of the back surface electrode opposite to the first radiation electrode is smaller than an area of a portion of the back surface electrode opposite to the second radiation electrode.