摘要:
According to one embodiment, an antenna device is provided with a dielectric substrate whose both surfaces are covered by first and second metal films, a via-hole row in which via-holes are arranged in two rows on the dielectric substrate, and a waveguide line is formed by the first and the second metal films, and a slot pair provided in the first metal film. The slot pair has a first slot and a second slot provided so that a slot length direction is oblique to a line direction of the waveguide line. A center of the first slot and a center of the second slot are spaced apart from each other by not less than a half of the shorter one of the slot length of the first slot and the slot length of the second slot along the slot length direction.
摘要:
According to one embodiment, an antenna device includes a feeding portion, first and second wire-like metal portions, third and fourth plate-like metal portions and a fifth metal portion. One ends of the first and second wire-like metal portions are connected to the feeding portion. The third and fourth plate-like metal portions are respectively connected to the other ends of the first and second metal portions and disposed separately from each other with a predetermined distance therebetween. The fifth metal portion is configured to connect the third metal portion to the fourth metal portion. A total electrical length of the first to fifth metal portions is 3/2 wavelength at operating frequency band.
摘要:
According to one embodiment, an antenna device is provided with a dielectric substrate whose both surfaces are covered by first and second metal films, a via-hole row in which via-holes are arranged in two rows on the dielectric substrate, and a waveguide line is formed by the first and the second metal films, and a slot pair provided in the first metal film. The slot pair has a first slot and a second slot provided so that a slot length direction is oblique to a line direction of the waveguide line. A center of the first slot and a center of the second slot are spaced apart from each other by not less than a half of the shorter one of the slot length of the first slot and the slot length of the second slot along the slot length direction.
摘要:
An antenna device includes an antenna substrate and a feed line substrate. The antenna substrate includes subarray antennas, feeding interfaces and a back surface. The subarray antennas are arranged parallel with an interval on a plane. Each subarray antenna includes antenna elements and first feed lines. The first feed lines feed signals from the feeding interface on back surface to the antenna elements. The feed line substrate is attached along back surface and includes second feed lines, first and second mode transformers. Each second feed line has one and other ends portions. Other end portion has wider width than one end portion. Each first mode transformer is located in one end portion and connected to the feeding interface. Each second mode transformer is located in other end portion. One end portions are arranged in a line with interval, and other end portions are alternately arranged across one end portions.
摘要:
In some embodiments, a system and method is disclosed for, among other things, reducing interference in a first wireless network from a second wireless network. In some embodiments, the method includes that an Interfered AP, which Interfered AP either itself receives interference or has a station in the Interfered AP's network that receives interference from an Interfering AP or from a station within the Interfering AP's network, selects how to reduce interference from a plurality of interference reduction methods—e.g., including transmit power control (TPC), channel switching (CS) and/or the like.
摘要:
Signals received by a plurality of antenna elements are supplied to a beam forming circuit via a distributor. The beam forming circuit weights and combines the signals to output a reception signal corresponding to a beam having a predetermined directionality pattern. A weight used to control weighting and combining is set by a weight controller. Upon receiving a registration request from an unregistered terminal, the weight controller calculates a weight vector used to form a beam having null directionality toward that terminal, and maximum directionality toward the range of an area other than an area where the terminal is located of a plurality of areas obtained by dividing the area covered by the antenna elements in accordance with direction.
摘要:
In some embodiments, a system and method is disclosed for, among other things, reducing interference in a first wireless network from a second wireless network. In some embodiments, the method includes that an Interfered AP, which Interfered AP either itself receives interference or has a station in the Interfered AP's network that receives interference from an Interfering AP or from a station within the Interfering AP's network, selects how to reduce interference from a plurality of interference reduction methods—e.g., including transmit power control (TPC), channel switching (CS) and/or the like.
摘要:
The present invention relates to an apparatus for measuring antenna radiation efficiency, wherein a random field measurement method can be adopted. In this apparatus, a to-be-measured antenna and a standard antenna are situated in a frame. In the frame, a plurality of rods, which are horizontally movable and extend vertically, are supported. A plurality of radio wave scatterers whose intervals and curvatures can be determined at random are held to the rods. In the frame, a random field is created by the radio wave scatterers.
摘要:
A system and method for equalizing traffic between antenna beams is described. Aspects of the system and method may vary the beam widths to attempt to equalize traffic based on non-real-time communications and/or non-real-time communications.
摘要:
An antenna device includes an antenna substrate and a feed line substrate. The antenna substrate includes subarray antennas, feeding interfaces and a back surface. The subarray antennas are arranged parallel with an interval on a plane. Each subarray antenna includes antenna elements and first feed lines. The first feed lines feed signals from the feeding interface on back surface to the antenna elements. The feed line substrate is attached along back surface and includes second feed lines, first and second mode transformers. Each second feed line has one and other ends portions. Other end portion has wider width than one end portion. Each first mode transformer is located in one end portion and connected to the feeding interface. Each second mode transformer is located in other end portion. One end portions are arranged in a line with interval, and other end portions are alternately arranged across one end portions.