Abstract: The invention relates to an optical waveguide component and to a method for the production thereof.

Abstract: The invention relates to an assembly for optical coupling and for mode-selective separation or overlaying of optical fields, to the use thereof and to a method for producing a waveguide-based optical coupling element (10) which is designed for mode-selective separation or overlaying of optical fields at a further optical coupling point (410) of an optical component (400).

Abstract: An antenna device, comprising a dielectric substrate board (10), dipole means (16) formed on the substrate board (10), and reflector member (48, 70, 72) having first and second reflective surfaces which are aparallel to each other define a first angle between each other. A positional relationship between the substrate board (10) and the reflector member (48, 70, 72) is such that the substrate board (10) and a vertex of the first angle (?) substantially lie in the same plane and the first and second reflective surfaces lie on opposite sides of the plane, a second angle defined between the substrate board (10) and the first reflective surface being different from zero each. In this way, an antenna device suitable for use in a broad variety of applications is provided which allows easy modification of its antenna characteristics by adjusting the angle between the reflective surfaces and/or the angular position of the reflector member (48, 70, 72) with respect to the substrate board (10).

Abstract: The invention provides an antenna device, comprising a dielectric substrate board (10), dipole means (16) formed on said substrate board (10), and reflector means (48) having first and second reflective surfaces (50,52) which are aparallel to each other define a first angle between each other. A positional relationship between said substrate board (10) and said reflector means (48) is such that said substrate board (10) and a vertex of said first angle g(a) substantially lie in a same plane and said first and second reflective surfaces lie on opposite sides of said plane, a second angle defined between said substrate board (10) and said first reflective surface and a thirs angle defined between said substrate board (10) and said second reflective surface being different from zero each.

Abstract: The present invention relates to an antenna (1), comprising a dielectric substrate (2) comprising a front (3) and a back (4) dielectric face, at least one dipole element comprising a first (5) and a second (6) element for radiating and receiving electromagnetic signals, said first element (5) being printed on said front face (3) and said second element (6) being printed on said back face (4), said first and said second element having a spiral shape, respectively, both spirals being open, and metal feeding elements for supplying signals to and from said dipole element, said metal feeding elements comprising a first line (7) printed on said front face (3) and to said first element (5) coupled at a first feeding point and a second line (8) printed on said back (4) face and coupled to said second element (6) at a second feeding point, said first and said second feeding point overlapping each other.

Abstract: The present invention relates to an antenna (1), comprising a dielectric substrate (2) comprising a front (3) and a back (4) dielectric face, at least one dipole means comprising a first (5) and a second (6) element for radiating and receiving electromagnetic signals, said first element (5) being printed on said front face (3) and said second element (6) being printed on said back face (4), said first and said second element having a spiral shape, respectively, both spirals being open, and metal feeding means for supplying signals to and from said dipole means, said metal feeding means comprising a first line (7) printed on said front face (3) and to said first element (5) coupled at a first feeding point and a second line (8) printed on said back (4) face and coupled to said second element (6) at a second feeding point, said first and said second feeding point overlapping each other.

Abstract: The present invention relates to a circular polarized antenna with a dielectric substrate (11) comprising a front and a back dielectric face (12, 13), a first and a second subantenna (14, 15), each comprising a first and a second element for radiating and receiving circular polarized electromagnetic signals, the first and second subantenna being arranged orthogonal to each other on the dielectric substrate (11) and having essentially conjugate complex impedances, a transmission line (18, 25, 30, 46) connected with the first and second subantenna for transmitting signals to and from said first and second subantenna and a reflector (16) spaced to and parallel with the back face (23) of the dielectric substrate (11), a low loss material (17) being located between said reflector means (16) and said back face (13). This structure provides a radiation pattern with a variable shape. Further, this antenna can be printed onto a corresponding substrate and therefor be produced at low cost.

Abstract: The present invention relates to a phase array antenna comprising a dielectric substrate (1) comprising a front and a back dielectric face (2, 3), a plurality of dipole means (4), each comprising a first and a second element (5, 6) for radiating and receiving electromagnetic signals, said first elements (5) being printed on said front face and pointing in a first direction and said second elements (6) being printed on said back face (3), and pointing in a second direction opposite to said first direction, metal strip means (7) for supplying signals to and from said dipole means (4), said metal strip means (7) comprising a first line (8) printed on said front face (2) and coupled to said first element (5) and a second line (9) printed on said back face (3) and coupled to said second element (6), and reflector means (10) spaced to and parallel with said back face (3) of said dielectric substrate (1), a low loss material (11) being located between said reflector means (10) and said back face (3), and having a di