An antenna includes a planar ground plane, a planar exciter, and a plurality of passive elements. The planar ground plane and the planar exciter are disposed orthogonal to a longitudinal axis of the antenna. The planar exciter is spaced apart from the ground plane. The planar exciter is configured to excite right-hand circularly-polarized electromagnetic radiation. The planar exciter is configured to excite first currents orthogonal to the longitudinal axis and substantially no current parallel to the longitudinal axis. The plurality of passive elements is symmetrically disposed azimuthally about the longitudinal axis and spaced apart from the planar exciter. The plurality of passive elements is electromagnetically coupled to the planar exciter. The plurality of passive elements is configured to excite second currents parallel to the longitudinal axis and third currents orthogonal to the longitudinal axis.

An antenna includes a planar ground plane, a planar exciter, and a plurality of passive elements. The planar ground plane and the planar exciter are disposed orthogonal to a longitudinal axis of the antenna. The planar exciter is spaced apart from the ground plane. The planar exciter is configured to excite right-hand circularly-polarized electromagnetic radiation. The planar exciter is configured to excite first currents orthogonal to the longitudinal axis and substantially no current parallel to the longitudinal axis. The plurality of passive elements is symmetrically disposed azimuthally about the longitudinal axis and spaced apart from the planar exciter. The plurality of passive elements is electromagnetically coupled to the planar exciter. The plurality of passive elements is configured to excite second currents parallel to the longitudinal axis and third currents orthogonal to the longitudinal axis.

An antenna system has high capacity, continuous mobile coverage that is especially beneficial in stadium style venues. The use of a low profile, rail mounted antenna system and the abundance of hand and safety rails enable coverage throughout the venue. The system increases the density of communications antennas throughout the stadium providing significantly enhanced mobile voice and data service to a higher number of users over traditional stadium technology.

An antenna system has high capacity, continuous mobile coverage that is especially beneficial in stadium style venues. The use of a low profile, rail mounted antenna system and the abundance of hand and safety rails enable coverage throughout the venue. The system increases the density of communications antennas throughout the stadium providing significantly enhanced mobile voice and data service to a higher number of users over traditional stadium technology.

An apparatus and method are provided for a wearable article with multiple antennas. The wearable article includes a body, a first structure positioned in the body, and a plurality of first electronic components mounted on the first structure. Further included is a second structure positioned in the body beneath and spaced from the first structure, and a plurality of second electronic components mounted on the second structure. A first antenna is in electrical communication with at least one of the first electronic components, and a second antenna is in electrical communication with at least one of the second electronic components.

An apparatus and method are provided for a wearable article with multiple antennas. The wearable article includes a body, a first structure positioned in the body, and a plurality of first electronic components mounted on the first structure. Further included is a second structure positioned in the body beneath and spaced from the first structure, and a plurality of second electronic components mounted on the second structure. A first antenna is in electrical communication with at least one of the first electronic components, and a second antenna is in electrical communication with at least one of the second electronic components.

An antenna device includes a first antenna element and a second antenna element. The first antenna element operates at a first predetermined frequency band. The second antenna element operates at a second predetermined frequency band that is different from the first predetermined frequency band. The first antenna element includes a base end portion, a front end portion, a folded portion, a first side portion disposed between the base end portion and the folded portion, and a second side portion disposed between the folded portion and the front end portion. A direction of a current vector in the first side portion is equal to a direction of a current vector in the second side portion. The second antenna element is disposed adjacent to the first antenna element.

An antenna device includes a first antenna element and a second antenna element. The first antenna element operates at a first predetermined frequency band. The second antenna element operates at a second predetermined frequency band that is different from the first predetermined frequency band. The first antenna element includes a base end portion, a front end portion, a folded portion, a first side portion disposed between the base end portion and the folded portion, and a second side portion disposed between the folded portion and the front end portion. A direction of a current vector in the first side portion is equal to a direction of a current vector in the second side portion. The second antenna element is disposed adjacent to the first antenna element.

A radiation pattern reconfigurable antenna includes an input port, a signal divider, a filter, and first and second radiators. The signal divider is connected to the input port and configured to divide a signal at the input port into a first output and a second output. The filter is connected to the second output, wherein the filter is configured to filter signal within a first frequency band and to pass signals within a second frequency band. The first radiator is configured to receive the signal from the first output of the signal divider, wherein the first radiator receives signals within the first frequency band and the second frequency band. The second radiator is connected to the filter to receive signals provided within the second frequency band.

A radiation pattern reconfigurable antenna includes an input port, a signal divider, a filter, and first and second radiators. The signal divider is connected to the input port and configured to divide a signal at the input port into a first output and a second output. The filter is connected to the second output, wherein the filter is configured to filter signal within a first frequency band and to pass signals within a second frequency band. The first radiator is configured to receive the signal from the first output of the signal divider, wherein the first radiator receives signals within the first frequency band and the second frequency band. The second radiator is connected to the filter to receive signals provided within the second frequency band.