The present invention relates to an antenna arrangement comprising a constant current electrical loop, which is arranged to provide a first essentially toroid-shaped radiation pattern, where the antenna arrangement further comprises a first and a second electrical dipole. The electrical dipoles are arranged essentially orthogonal to each other, and are arranged to provide a second and third essentially toroid-shaped radiation pattern which each is essentially orthogonal to the other and to the f...

An antenna and associated magnetic preamplifier for use with UHF and Microwave wireless telecommunications devices operating at frequencies of greater than 0.3 gigahertz. The antenna may include a plurality of concentric loops about a core. The antenna may be made of a conductor wound helically about an air core with a circumference and a number of loops, and the spacing of the loops chosen based on the desired frequency of communication. The antenna may include a plurality of loops of conductor...

There is provided with a portable wireless apparatus including a first casing including a first conductor plate; a second casing including a second conductor plate, wherein the first casing and the second casing being capable to rotate around a feed point, a coupler which couples the first casing and the second casing and a feed point which feeds power to the first and second conductor, disposed in close vicinity to the coupler, wherein, when the first and second conductor plates are rotated in ...

An antenna apparatus for the reception of, and or transmission of, electromagnetic energy, the apparatus including a non-radiating dielectric waveguide aperture coupled to at least one dielectric rod antenna, which is electromagnetically coupled to a transmission line element.

A wideband -shaped monopole dipole includes a first dipole unit, a second dipole unit, a feed device, a parallel-wire and two double-leads set between two cantilevers of the first dipole unit and the second dipole unit. The parallel-wire connects the first dipole unit with the second dipole unit in a parallel connection. The feed device includes a feed pad and a coaxial cable. The double-leads between the cantilevers of the first and second dipole units extend to form two parallel plates acting ...

An antenna that provides three resonance frequencies includes a dielectric, and an electrically conductive antenna element arranged on a dielectric, the antenna element branches into three parts and being connected to a single feeding point, and at least two of the three parts being electromagnetically coupled with each other.

An antenna having a radiating surface (1) and a base surface (2). One or more discrete components (3) are arranged between the radiating surface (1) and the base surface (2). The radiating surface (1) has a tapering with respect to its width B and with respect to its height H from the base surface (2).

The present invention is applicable to satellite ground station antennas having a wide field of view in comparison to the satellites with which the antenna connects. One embodiment includes a parabolic reflector having a size that corresponds to a beam with an angular half-width larger than the spacing between neighboring interfering satellites. It also has a feed coupled to the parabolic reflector configured to have a high sensitivity for a target satellite within the angular half-width of the ...

A wireless communication device (10) includes an antenna (12), an electronic element (14), and a support member (18). The antenna for radiating and receiving electromagnetic signals is disposed on one side of the electronic element. The support member includes at least one support portion disposed between the antenna and the electronic element to form a space for spacing the antenna and the electronic element to enhance the radiation efficiency of the antenna.

A roof antenna (1) for vehicles is provided with a base plate (14) on which antenna elements (12, 13) are arranged or which has at least one contact element (15) for an antenna element, a cover (2) of the roof antenna (1) being provided with at least one opening (6) through which a fastening means can be inserted and through which the fastening means can be countersunk at the side opposite to the surface of the cover (2) in order to fasten the roof antenna (1) on a vehicle body, particularly on ...