75results about How to "Narrow beam" patented technology

Embodiments of the invention relate to wireless communications networks, and more specifically to an antenna apparatus for cellular wireless systems. Increasing data capacity of cellular wireless systems places increasing demands on the capacity of the two way connection, known as backhaul, between a cellular base station and a telecommunications network such as the PSTN backhaul, since this is the connection that has to convey the wireless-originating traffic to its destination, often in an entirely different network. Known backhaul links include leased lines, microwave links, optical fibre links or radio resources for relaying backhaul traffic between base stations. The fixed line solutions are expensive to implement and maintain, while the radio solutions antenna configurations that are not ideal for relaying data between base stations. In embodiments of the invention, communication between base stations occurs in a first timeslot by use of a first antenna system and communication between a given base station and a user equipment occurs in a second timeslot using a second antenna system. The benefit of this method is that the first antenna system can be optimised for use in communication between base stations, whereas the second antenna system can be optimised for communication with user equipment which preferably occurs within the area of cellular wireless coverage of the sector served by the second antenna system.

Embodiments of the invention relate to an antenna structure and are particularly suited to array antennas. An antenna according to an embodiment of the invention employs an enclosure having an aperture in one end; in preferred arrangements the aperture provides the enclosure with a substantially open end, over which the cover is placed. The cover has a slot therein, of a smaller size than the size of the aperture presented by the open ended enclosure and the slot in the cover then acts as the radiating slot.

An elongated, indirect lighting module comprising a plurality of LEDs arranged along a longitudinal axis in a housing provided with a mounting element having an elongated shape in axial direction. The elongated lighting module further comprising suspension elements for suspended connection of the housing to a ceiling. Each suspension element has at a first end a first connector connected to the mounting element, and at a second, opposite end a second connector for connection to the ceiling. The suspension element via its first connector is displaceable along the longitudinal axis over the mounting element, and the LEDs are configured to issue light into a radial direction essentially away from both the mounting element and the suspension element and for a major part toward the ceiling.