53results about How to "Reduced beam width" patented technology

The present invention provides a method for a semiconductor device, which comprises the steps of forming a first conductive layer in contact with a semiconductor region, forming an insulating layer on the first conductive layer by one of droplet discharge and application, irradiating a portion of the insulating layer with laser light to form a mask pattern, and forming divided first conductive layers by etching with the use of the mask pattern as a mask.

A wireless network base station for optimizing the beam width of a downlink traffic beam in real time is provided. The base station includes a transceiver for receiving a pilot strength signal and a power control signal from a mobile station. The base station further includes beam forming circuitry operable to form a downlink traffic beam spatially directed to serve the mobile station having a beam width set as a function of the received pilot strength signal and power control signal.

The invention discloses a planar feed source dielectric lens antenna used for an unmanned aerial vehicle (UAV) platform, comprising a cylindrical dielectric lens, a lens mount fixedly clamping the cylindrical dielectric lens, and a feed source mount installed at the free end of the lens mount and used for fixing a dielectric substrate; an array antenna feed source is printed on the dielectric substrate, and is located directly under the cylindrical dielectric lens; a gap exists between the top end of the array antenna feed source and the lower surface of the cylindrical dielectric lens; the array antenna feed source comprises at least one progressive groove antenna unit, a substrate integrated waveguide power dividing feed network in connection with the progressive groove antenna unit, and a microstrip line in connection with the substrate integrated waveguide power dividing feed network; the arrangement direction of the at least one progressive groove antenna unit is consistent with the axial direction of the cylindrical dielectric lens.

A wireless device (200, 310-1) executes a method (400) of reserving a time slot for communication with a second wireless device (200, 310-4) in a communication network 5 (300). The wireless device (200, 310-1) determines whether any antenna beam to be used in a proposed communication with the second wireless device (200, 310-4) communication within the time slot would interfere with any antenna beam used by any first wireless device (200, 310-i) in any existing reservations for the time slot. When any antenna beam to be used in the proposed communication would not interfere with any antenna beam used 10 by any first wireless device (200, 310-i) in any existing reservations for the time slot, the wireless device (200, 310-1) transmits an information element (500) or reserving the time slot for communication with the second wireless device (200, 310-4).

An axle-to-beam or crossbrace-to-beam connection for a vehicle axle / suspension system includes an axle or crossbrace having at least one depression formed therein. A sleeve is formed with at least one depression and disposed about the axle or crossbrace so that the axle or crossbrace depression and the sleeve depression matingly engage one another to form a mated pair of depressions. A method of forming the axle-to-beam or crossbrace-to-beam connection includes providing an axle or crossbrace and disposing a sleeve about the axle or crossbrace. At least one mated pair of depressions is simultaneously formed in the axle or crossbrace and the sleeve. The sleeve is immovably mounted to a vehicle axle / suspension system.

The invention relates to an antenna installation seat and an antenna, and the antenna installation seat comprises an antenna substrate, a fixed plate, and an annular reflection plate. The antenna substrate is of a bowl-shaped structure, and the edge of the opening of the bowl-shaped structure is fixed with the fixed plate. The annular reflection plate is located on the fixed late and is fixed withthe fixed plate. The antenna reflection plate and the antenna substrate are located on the same side surface of the fixed plate. The interior of the bowl-shaped structure is provided with a feed support seat. Compared with a conventional product technology, the antenna is simple in assembly, is higher in structural consistency, and is higher in low-elevation gain.

A refueling apparatus for charging nuclear fuel in a reactor vessel, the refueling apparatus including: a refueling unit loading new nuclear fuel to a core or extracting spent nuclear fuel from the core; and a waveguide sensor unit including an ultrasonic wedge to form a Lamb wave, a waveguide with an end connected to the ultrasonic wedge and with another end transmitting the Lamb wave into the reactor vessel, and an ultrasonic sensor connected to the ultrasonic wedge and sensing a reflection signal reflected from an inside of the reactor vessel, the waveguide being formed in a plate shape and mounted in an end of the refueling unit. The waveguide integrally moves with the refueling unit, and the waveguide sensor unit detects a condition of the inside of the reactor vessel, while the refueling unit refuels the fuel assembly in the reactor vessel.

The invention discloses an antenna array based on a passive decoupling technology. The antenna array comprises a reflector, a first array, a second array and a plurality of decoupling metal strips, wherein the first array, the second array and the decoupling metal strips are arranged on the reflector, the first array and the second array are parallelly and symmetrically arranged on the reflector,the first array comprises a plurality of parallel first radiation units, the second array comprises a plurality of parallel second radiation units, the number of the first radiation units is consistent with that of the second radiation units, the decoupling metal strips are positioned at a center line of the reflector, and parts of or all first radiation units are connected with parts of or all second radiation units through the decoupling metal strips. According to the antenna array, decoupling is achieved by the structure, so that mutual coupling effect on adjacent antennas is minimized, antenna array elements can be more compactly arranged, and miniaturization of multi-column side-by-side antennas for mobile communication is achieved.

In an unmanned aerial vehicle auxiliary communication network based on non-orthogonal multiple access, a beam width design method capable of meeting ultra-reliable low-time-delay communication is provided. In order to realize ultra-reliable low-delay transmission, the error probability of transmission is minimized by properly reducing the beam width of the unmanned aerial vehicle. Because the usergrouping method can reduce the coverage of the user-free area by making the unmanned aerial vehicle cover only the users in each group, the minimization of the beam width is realized. Therefore, on the basis of the scene, two user grouping algorithms based on unmanned aerial vehicle assisted communication are used. The first type is the traditional K-Means algorithm. However, the condition of a single user group occurs sometimes in a means algorithm, and spectrum resources cannot be effectively shared. The second type is an improved K-Means algorithm. The algorithm can ensure that more than two users exist in each group, and has good performance in the aspect of solving the problems considered in the invention. After user grouping, we design an unmanned aerial vehicle beam width coveragemethod containing all users in the group for each group of users, and design a beam width calculation method based on user positions for each group of users, so as to further minimize the beam width and solve the optimization problem.

Improvement in characteristics of a SELAX-TFT and throughput of ELA crystallization is achieved. When a thin film transistor using pseudo single crystal semiconductor and a thin film transistor using particulate polysilicon semiconductor are formed on a single substrate, the film thickness of an amorphous semiconductor film before crystallization in the pseudo single crystal semiconductor portion is greater than that in the polysilicon semiconductor portion.