According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals. The antenna assembly may also include at least one reflector spaced-apart from the antenna element that is configured to be operable for reflecting electromagnetic waves generally towards the antenna element.

A collapsible detection antenna (10) to detect electromagnetic tags (12) of surgical articles (14) in an operating room (16) includes an antenna assembly (18) configured to detect the electromagnetic tags (12). The antenna assembly (18) is configured to move between a deployed configuration and a collapsed configuration. In the deployed configuration, the antenna assembly forms an antenna loop (20) configured to detect the electromagnetic tags (12). The antenna assembly (18) has a greater detection range in the deployed configuration than in the collapsed configuration. The deployed configuration corresponds to a tuned shape of the antenna assembly (18) sufficient to detect the electromagnetic tags (12) in the deployed configuration.

A collapsible detection antenna (10) to detect electromagnetic tags (12) of surgical articles (14) in an operating room (16) includes an antenna assembly (18) configured to detect the electromagnetic tags (12). The antenna assembly (18) is configured to move between a deployed configuration and a collapsed configuration. In the deployed configuration, the antenna assembly forms an antenna loop (20) configured to detect the electromagnetic tags (12). The antenna assembly (18) has a greater detection range in the deployed configuration than in the collapsed configuration. The deployed configuration corresponds to a tuned shape of the antenna assembly (18) sufficient to detect the electromagnetic tags (12) in the deployed configuration.

Reflector antenna system includes a hoop assembly comprising a plurality of link elements which are rigid and extend between a plurality of hinge members, the hoop assembly expandable between a collapsed condition where the link elements are substantially parallel to one another and an expanded condition wherein the link elements define a circumferential hoop around a central axis. The hoop assembly defines a plurality of N rectangular sides, each comprised of an X-member including first and a second link element in a crossed configuration. A plurality of tension elements extend around the periphery of the side and apply tension between opposing ends of the first and second link elements in directions aligned with the top, bottom and two opposing sides.

Reflector antenna system includes a hoop assembly comprising a plurality of link elements which are rigid and extend between a plurality of hinge members, the hoop assembly expandable between a collapsed condition where the link elements are substantially parallel to one another and an expanded condition wherein the link elements define a circumferential hoop around a central axis. The hoop assembly defines a plurality of N rectangular sides, each comprised of an X-member including first and a second link element in a crossed configuration. A plurality of tension elements extend around the periphery of the side and apply tension between opposing ends of the first and second link elements in directions aligned with the top, bottom and two opposing sides.

The wireless communication apparatus includes a metal frame which encloses a side surface of a main body portion formed in a plate shape, and a ground plate which is housed in the main body portion. The metal frame includes a monopole antenna which is electrically connected to a feeding point at an intermediate portion of a first frame defined by a first gap and a second gap provided on the metal frame and which resonates with a radio wave at a first frequency defined by the intermediate portion and the second gap, a first conductive portion, and a second conductive portion. A length combining the monopole antenna and the first conductive portion is a length enabling the monopole antenna and the first conductive portion to resonate with a radio wave at the first frequency as a loop antenna.

The wireless communication apparatus includes a metal frame which encloses a side surface of a main body portion formed in a plate shape, and a ground plate which is housed in the main body portion. The metal frame includes a monopole antenna which is electrically connected to a feeding point at an intermediate portion of a first frame defined by a first gap and a second gap provided on the metal frame and which resonates with a radio wave at a first frequency defined by the intermediate portion and the second gap, a first conductive portion, and a second conductive portion. A length combining the monopole antenna and the first conductive portion is a length enabling the monopole antenna and the first conductive portion to resonate with a radio wave at the first frequency as a loop antenna.

According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals.

According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals.

A vehicle antenna device includes an antenna base, an antenna case that covers the antenna base, and an antenna element positioned inside the antenna case and including a capacitive element and a coil element. The coil element includes a supporting body and a winding held by the supporting body, and the supporting body has a support area and projections that are formed along an axial direction of the coil element and hold the winding in the support area.