An antenna apparatus has a sleeve antenna. The sleeve antenna has an internal conductive member, an external conductive member, an insulating member, and a mountain-shaped conductive member that is electrically connected to the external conductive member. The mountain-shaped conductive member expands radially from an upper edge towards a lower edge. The internal conductive member protrudes higher than the external conductive member above the upper edge of the mountain-shaped conductive member.

In-building antenna apparatus and methods for manufacturing and installing the same. In one embodiment, the antenna apparatus includes a radome cover, a lower flange, an antenna housing, a spring-loaded mount apparatus, a signaling interface, and a plurality of spring arms. Each of the spring arms may include at least one tie-down location. Accordingly, when a removable tie is placed around a plurality of tie-down locations, the antenna apparatus resides in an installation configuration; however, when the removable tie is removed from around the plurality of tie-down locations, the antenna apparatus transitions towards a default configuration. The spring arms may also act as a ground plane for the antenna. Spring-loaded mount apparatus as well as methods of manufacturing and installing the aforementioned antenna apparatus are also disclosed.

A stacked patch radiating element includes a dielectric substrate, a ground plane on a first surface of the dielectric substrate, a patch radiator on a second surface of the dielectric substrate, a feed that is configured to connect the patch radiator to a transmission line, a solder layer on the patch radiator opposite the dielectric substrate, and a parasitic radiating element on the solder layer opposite the patch radiator. The parasitic radiating element includes a metal layer on the solder, a parasitic radiator dielectric substrate on the first metal layer opposite the solder, and a parasitic radiator on the parasitic radiator dielectric substrate opposite the first metal layer.

The disclosure relates to an antenna-retaining device for a motor vehicle. The antenna-retaining device includes an antenna carrier plate for retaining a monopole antenna in an emitting position; and a motor-vehicle coupling device for fastening the antenna carrier plate to a vehicle body. The antenna carrier plate is electrically conductive and thus forms an electrical counterpoise to the monopole antenna. The antenna-retaining device includes an electrically conductive tab element as a counterpoise extension. The antenna carrier plate and the counterpoise extension are interconnected. When the monopole antenna is retained in the emitting position, the monopole antenna and the counterpoise extension are arranged on opposite sides of the antenna carrier plate, and a surface of the counterpoise extension and a planar emitting region or a longitudinal axis of the monopole antenna include an angle in the range of 90° to 180°.

The disclosure relates to an antenna-retaining device for a motor vehicle. The antenna-retaining device includes an antenna carrier plate for retaining a monopole antenna in an emitting position; and a motor-vehicle coupling device for fastening the antenna carrier plate to a vehicle body. The antenna carrier plate is electrically conductive and thus forms an electrical counterpoise to the monopole antenna. The antenna-retaining device includes an electrically conductive tab element as a counterpoise extension. The antenna carrier plate and the counterpoise extension are interconnected. When the monopole antenna is retained in the emitting position, the monopole antenna and the counterpoise extension are arranged on opposite sides of the antenna carrier plate, and a surface of the counterpoise extension and a planar emitting region or a longitudinal axis of the monopole antenna include an angle in the range of 90° to 180°.

An antenna apparatus has a sleeve antenna. The sleeve antenna has an internal conductive member, an external conductive member, an insulating member, and a mountain-shaped conductive member that is electrically connected to the external conductive member. The mountain-shaped conductive member expands radially from an upper edge towards a lower edge. The internal conductive member protrudes higher than the external conductive member above the upper edge of the mountain-shaped conductive member.

An antenna apparatus has a sleeve antenna. The sleeve antenna has an internal conductive member, an external conductive member, an insulating member, and a mountain-shaped conductive member that is electrically connected to the external conductive member. The mountain-shaped conductive member expands radially from an upper edge towards a lower edge. The internal conductive member protrudes higher than the external conductive member above the upper edge of the mountain-shaped conductive member.

An antenna may include a tower extending vertically upward from a ground location, a first set of elongate antenna elements extending outwardly from the tower at a first height above the ground location, and a second set of elongate antenna elements extending outwardly from the tower at a second height above the ground location and below the first height. In some embodiments, at least one elongate antenna element of the first and second sets of elongate antenna elements may be electrically coupled to the ground location. A radio frequency (RF) feed may be electrically coupled to the first and second sets of elongate antenna elements.

An antenna element is provided that is adapted to provide a more consistent horizontally polarized signal. In one embodiment, a radiator and counterpoise are provided with the counterpoise being disposed between the radiator and a ground plane in use. The feed location for feeding the radiator and the counterpoise is significantly spaced from the ground plane in use and the radiator and counterpoise diverge relative to this feed location.

An antenna element is provided that is adapted to provide a more consistent horizontally polarized signal. In one embodiment, a radiator and counterpoise are provided with the counterpoise being disposed between the radiator and a ground plane in use. The feed location for feeding the radiator and the counterpoise is significantly spaced from the ground plane in use and the radiator and counterpoise diverge relative to this feed location.