Abstract: The present disclosure relates to an antenna arrangement including a first antenna configured to operate within a first frequency band and a second antenna configured to operate within a second frequency band. The first frequency band is higher than the second frequency band. Further, the second antenna is at least partly arranged within an illumination-field of the first antenna. Furthermore, the second antenna includes a dipole structure segmented into a plurality of electrically conductive sections, wherein each electrically conductive section is coupled to an adjacent electrically conductive section by a reactive load section.

Abstract: The present disclosure relates to a notch antenna structure including a plurality of notch antenna elements arranged in at least a first row (R). Each notch antenna element includes a base portion having first and second opposing surfaces, a first electrically conductive body and an adjacent second electrically conductive body, the electrically conductive bodies extending vertically from the first surface, forming an integral structure, a tapering gap between the two electrically conductive bodies. The notch antenna structure includes a bottom plane for receiving the second surface of the plurality of notch antenna elements and the first electrically conductive body includes a leg portion having a feed arrangement proximate to the tapering gap, the feed arrangement including a feed point.

Abstract: An antenna array is provided. The antenna array includes a plurality of M row antenna structures, each row antenna structure forming a row in the antenna array, M being a positive integer?2, and a plurality of N column antenna structures, each column antenna structure forming a column in the antenna array, N being a positive integer?2. Each row antenna structure includes a plurality of row antenna elements, where each row antenna element includes a main body tapering from a bottom portion to a tip portion. The bottom portion of each row antenna element includes a first leg portion having a first feed arrangement, and wherein each row antenna element is joined to at least one adjacent row antenna element so to form a conjoined row of notch antennas.

Abstract: The present disclosure relates to an array antenna extending along a first axis in a first direction in a first plane and a second axis in a second direction in the first plane, the first direction being perpendicular to the second direction, the array antenna including; a substrate having a first side and an opposing second side; a plurality of connectors extending in a third direction from the first side, the third direction being perpendicular to the first plane; an antenna element module having a radiating side and an opposing coupling side, wherein the antenna element module includes a plurality of antenna elements arranged on the radiating side and an electromagnetic shielding structure arranged on the coupling side.

Abstract: The disclosed subject matter concerns an antenna which comprises a ground plane and at least a first and a second antenna element. Each antenna element comprises a feed point, a cavity, a main body, a tip and at least a first tapered portion and a second tapered portion. Each antenna element is arranged on the ground plane, where said first and second tapered portions extend along the antenna element from said tip towards the ground plane of the antenna element, and where each antenna element extends essentially perpendicularly to said ground plane along a centre axis of the antenna element. Each antenna element has at least a first leg and a second leg, where said first leg extends from said main body to the first feed point, where said feed point is located between the first leg and the ground plane, and where said second leg extends from said main body to the ground plane, and where said second leg is electrically connected to the ground plane.

Abstract: An antenna system for providing identification functionality comprising a main antenna and an auxiliary antenna, wherein the antennas are configured to at least transmit electromagnetic waves. The antenna system comprises a first channel interface and a second channel interface, a first switch and a transmission input means. The first switch is configured to switch between a first operation mode and a second operation mode. When set in the first operation mode the second channel interface is set to be in connection with the auxiliary antenna and when set in the second operation mode the second channel interface is set to be in connection with the main antenna. If transmission via the first transmission channel is expected the transmission input means is configured to set the first switch in the first operation mode.

Abstract: An antenna system for providing identification functionality comprising a main antenna and an auxiliary antenna, wherein the antennas are configured to at least transmit electromagnetic waves. The antenna system comprises a first channel interface and a second channel interface, a first switch and a transmission input means. The first switch is configured to switch between a first operation mode and a second operation mode. When set in the first operation mode the second channel interface is set to be in connection with the auxiliary antenna and when set in the second operation mode the second channel interface is set to be in connection with the main antenna. If transmission via the first transmission channel is expected the transmission input means is configured to set the first switch in the first operation mode.

Abstract: The disclosed subject matter concerns an antenna which comprises a ground plane and at least a first and a second antenna element. Each antenna element comprises a feed point, a cavity, a main body, a tip and at least a first tapered portion and a second tapered portion. Each antenna element is arranged on the ground plane, where said first and second tapered portions extend along the antenna element from said tip towards the ground plane of the antenna element, and where each antenna element extends essentially perpendicularly to said ground plane along a centre axis of the antenna element. Each antenna element has at least a first leg and a second leg, where said first leg extends from said main body to the first feed point, where said feed point is located between the first leg and the ground plane, and where said second leg extends from said main body to the ground plane, and where said second leg is electrically connected to the ground plane.

Abstract: A method of determining a reference calibration setting for an adaptive optics system (1) comprising a detecting device (8) for detecting light from an object (5); and at least one controllable wavefront modifying device (9) arranged such that light from the object (5) passes via the wavefront modifying device (9) to the detecting device (8).

Abstract: A method of determining a reference calibration setting for an adaptive optics system (1) comprising a detecting device (8) for detecting light from an object (5); and at least one controllable wavefront modifying device (9) arranged such that light from the object (5) passes via the wavefront modifying device (9) to the detecting device (8).

Abstract: A method of determining a reference calibration setting for an adaptive optics system comprising a detecting device for detecting light from an object; and at least one controllable wavefront modifying device arranged such that light from the object passes via the wavefront modifying device to the detecting device. The method comprises: arranging a light-source between the object and the wavefront modifying device to provide a reference light beam to the detecting device; for each of a plurality of orthogonal wavefront modes: controlling the wavefront modifying device to vary a magnitude of the orthogonal wavefront mode; acquiring a series of readings of the detecting device, each reading corresponding to one of the magnitude; determining a quality metric value for each reading, resulting in a series of quality metric values; and determining a reference parameter set for the wavefront modifying device corresponding to an optimum quality metric value.

Abstract: The surface recombination velocity of a silicon sample is reduced by deposition of a thin hydrogenated amorphous silicon or hydrogenated amorphous silicon carbide film, followed by deposition of a thin hydrogenated silicon nitride film. The surface recombination velocity is further decreased by a subsequent anneal. Silicon solar cell structures using this new method for efficient reduction of the surface recombination velocity is claimed.

Abstract: The surface recombination velocity of a silicon sample is reduced by deposition of a thin hydrogenated amorphous silicon or hydrogenated amorphous silicon carbide film, followed by deposition of a thin hydrogenated silicon nitride film. The surface recombination velocity is further decreased by a subsequent anneal. Silicon solar cell structures using this new method for efficient reduction of the surface recombination velocity is claimed.

Abstract: A method of determining a reference calibration setting for an adaptive optics system (1) comprising a detecting device (8) for detecting light from an object (5); and at least one controllable wavefront modifying device (9) arranged such that light from the object (5) passes via the wavefront modifying device (9) to the detecting device (8).

Abstract: An antenna structure including at least two stacked antenna apertures, a first antenna aperture with first antenna elements and at least a second antenna aperture with second antenna elements. The antenna structure is arranged for operation in at least a high and a low frequency band. The first antenna elements are arranged for operation in the high frequency band and the second antenna elements for operation in the low frequency band. The first antenna elements are arranged to have a polarization substantially perpendicular to the polarization of the second antenna elements. The second antenna elements are arranged in at least one group and each of the group includes a number of second antenna elements coupled in series and arranged to have a common feeding point on a straight feeding structure. One feeding structure is located adjacent to each group of second antenna elements. The direction of the feeding structure is substantially perpendicular to the polarization of the first antenna elements.

Abstract: An On Board Equipment (OBE) suitable for mounting on a vehicle comprises an OBE antenna connected to an OBE transmit/receive unit. The OBE antenna is arranged to receive a signal from a station via a first wireless communication link. The signal comprises at least one traffic information message from the station. The OBE is arranged to convert the traffic information message for transfer to an audio output through at least one speaker in an existing audio system of the vehicle wherein said transfer of the traffic information message to the existing audio system is arranged to be performed via a second wireless communication link. The traffic information message is arranged to be picked up by standard receiving means of the existing audio system and to be delivered as a voice message on said speakers through a prioritized channel of the existing audio system.

Abstract: An On Board Equipment (OBE) suitable for mounting on a vehicle comprises an OBE antenna connected to an OBE transmit/receive unit. The OBE antenna is arranged to receive a signal from a station via a first wireless communication link. The signal comprises at least one traffic information message from the station. The OBE is arranged to convert the traffic information message for transfer to an audio output through at least one speaker in an existing audio system of the vehicle wherein said transfer of the traffic information message to the existing audio system is arranged to be performed via a second wireless communication link. The traffic information message is arranged to be picked up by standard receiving means of the existing audio system and to be delivered as a voice message on said speakers through a prioritized channel of the existing audio system.

Abstract: A waveguide arrangement having a longitudinal extension, along which an electromagnetic wave may propagate, and comprising at least one waveguide part and a feeding arrangement which is arranged for feeding said waveguide part with a first polarization and a second polarization, said polarizations being mutually orthogonal. The feeding arrangement comprises a dielectric carrier material comprising a first feeding conductor, feeding the first polarization and a second feeding conductor, feeding the second polarization, where the first polarization is excited by means of first excitation means fed by said first feeding conductor and the second polarization is excited by means of second excitation means fed by said second feeding conductor, where at least one excitation means is a symmetrical structure with respect to the longitudinal extension.

Abstract: An antenna structure including at least two stacked antenna apertures, a first antenna aperture with first antenna elements and at least a second antenna aperture with second antenna elements. The antenna structure is arranged for operation in at least a high and a low frequency band. The first antenna elements are arranged for operation in the high frequency band and the second antenna elements for operation in the low frequency band. The first antenna elements are arranged to have a polarization substantially perpendicular to the polarization of the second antenna elements. The second antenna elements are arranged in at least one group and each of the group includes a number of second antenna elements coupled in series and arranged to have a common feeding point on a straight feeding structure. One feeding structure is located adjacent to each group of second antenna elements. The direction of the feeding structure is substantially perpendicular to the polarization of the first antenna elements.

Abstract: An arrangement for providing communication between a radio antenna and a radio base station in a cellular communication system. A waveguide is configured to connect the radio base station to the antenna. The waveguide may be connected directly or indirectly to the radio base station and/or the antenna. The waveguide is configured with a number of compartments, each compartment acting as a waveguide for a particular signal. The arrangement is thus able to convey a large number of signals, for example, for sector antennas of dual polarization type and for more than one frequency band.