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

It is an object of the present invention to provide a method for manufacturing a semiconductor device that has high driving ability (that is, large W/L) according to a method in which the use efficiency of a material is improved and the throughput and yield are enhanced. 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.

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.

A manufacturing method of a semiconductor thin film decreases the number of and controls the direction of crystal grain boundaries. A first beam irradiated onto amorphous silicon produces a radial temperature gradient centered on a tip of a concave. This forms a crystal grain in the concave tip, which grows in both the beam width and length direction. After the second beam and on, growth is repeated using the crystal grain formed in the tip of the concave as the seed. This forms a band-form crystal grain with a wider than that of the conventional narrow-line beam, with the tip of the concave being the start point. Further, by setting the periphery of the concave pattern to be equal or less than the crystal grain diameter in the direction vertical to the beam scanning direction, it is possible to form the band-form crystal grain being lined continuously.

The invention discloses a method for designing partial-feed paraboloid multi-beam antenna feed array and is applicable to a satellite communication system. A reflection-side multi-beam antenna adopts a primary feed utilizing a feed array as paraboloid. The principle of forming multiple beams includes beams of the paraboloid antenna are deviated by means of transverse focus offset of the feed. According to the structural size of the integral antenna system and design procedure of feed array arrangement, a novel feed array layout is provided. The number of generable spot beams is twice times of practical feed number, all beams are tightly arranged, appointed spatial angle can be uniformly covered, and each spot beam has electrical characteristics of good gain uniformity, low minor lobe level, small beam width, high pointing accuracy and the like. The method for designing partial-feed paraboloid multi-beam antenna feed array is directly used for satellite-borne equipment or ground control communication station and has wide potential application and typical application value in the satellite communication system.

The present invention provides lens antennas that include a plurality of radiating elements and a lens positioned to receive electromagnetic radiation from at least one of the radiating elements, thelens comprising a composite dielectric material. The composite dielectric material comprises expandable gas-filled microspheres that are mixed with an inert binder, dielectric support materials such as foamed microspheres and particles of conductive material that are mixed together.

The invention relates to the field of radio technologies and particularly relates to a dielectric lens antenna for a high-altitude platform communication system. The dielectric lens antenna for the high-altitude platform communication system is used for solving the problems of large mass, big volume and complicated manufacture process of the antenna for the high-altitude platform communication system nowadays. A dielectric lens ball is connected with a dielectric slab of a yagi antenna unit, and the dielectric lens ball and the dielectric slab of the yagi antenna unit are integrally formed; balanced microstrip lines are adopted to feed the antenna; a second balanced microstrip line for feeding is arranged on the rear side wall of the dielectric slab; one end of a first balanced microstrip line for feeding is connected with one of two active oscillators; the other end of the first balanced microstrip line for feeding is simultaneously connected with two reflectors; and a horizontal section of the second balanced microstrip line for feeding is connected with the other one of the two active oscillators through a metal filler. The dielectric lens antenna has the characteristics of wide band, high gain, strong directional radiation property and narrow beam width, and can be applied to prospective high-altitude platform communication systems.

A random jitter beamforming method for reducing the influence of a side lobe to decrease a beam width, and a transmitter and a receiver using the same are provided. The random jitter beamforming method includes dividing a series of binary sequences to generate a plurality of bit groups, designating a beam pattern, corresponding to each of the bit groups, from a set of two or more beam patterns having the same gain and phase in a target direction, and forming a beam with the corresponding beam pattern, for each of the bit groups.

The present invention relates to a sensor device for detecting dose of radiation received at the sensor device, the sensor device comprising a flexible body having a cross-section being comparatively small relative to the length of the device, a cladding at the flexible body, the cladding converting incoming radiation into visible light, and an optical shape sensing device disposed within the flexible body and configured to determine a shape of the flexible instrument relative to a reference, the shape sensing device configured to collect information based on its configuration to map an intraluminal structure during a procedure. The present invention further relates to a radiation therapy system including such a sensor device and a method of operating a radiation therapy system including such a sensor device.

A substrate marking apparatus for use in combination with a substrate comprising a multi-color change diacetylene compound is disclosed. The substrate marking apparatus comprises: at least two radiation sources operable to emit radiation of different wavelengths, optical transformation elements and a control system. The control system takes digital file information and converts this to a set of emission instructions for the radiation sources. The radiation sources are then applied to the substrate in sequence and intensity determined by the control system such that the substrate is activated to change from a colorless state to any one of a range of multiple permanent colors.

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 discloses a concave conformal dielectric resonator antenna and a working method thereof, and the antenna comprises a dielectric resonator, a ground plate, a dielectric substrate, a feedseam and a feed line. The ground plate is conformal with the dielectric resonator, and the dielectric resonator is fixed at the middle of ground plate. The upper and lower surfaces of the dielectric substrate are respectively attached to and cover the ground plate and the feed line. The center of the ground plate is provided with the feed seam in a mode of etching. The antenna is fed by the feed line, and then the electromagnetic wave energy is coupled and conducted to the dielectric resonator on the upper surface through the feed seam on the ground plate. The antenna has a very low profile due to the conformal structure, reduces the space occupied by the antenna in a vertical direction, is easy for processing, is of a wearable structure, is wide in application range, is flexible in application scenarios, has a higher gain and a narrower beam, and has a bigger bandwidth.

A method for enhancing lateral resolution of ultrasonic testing images belongs to the field of ultrasonic non-destructive testing. According to the method, an ultrasonic testing system including an ultrasonic flaw detector, a test probe and a scanning device is adopted to test flaws so as to obtain an image, and an A scanning signal which forms the image is exported. Firstly, image reconstruction is carried out on the A scanning signal obtained in the testing image; secondly, phase information of the A scanning signal is extracted by the euler's formula, and a phase distribution matrix is obtained on the basis of time delay and phase stacking; and finally, a reconstructed image undergoes weighting treatment by the utilization of the phase distribution matrix so as to enhance lateral resolution of flaws in the testing image. The method for enhancing lateral resolution of ultrasonic testing images can be embedded into the flaw detector to realize automatic real-time imaging of the ultrasonic testing system. The method of the invention has good promotion and application value.

The invention provides a Fabry-Perot resonant antenna based on a graphene patch array structure comprising a graphene layer (1), a dielectric layer (2), a reflecting surface (3) and a waveguide (4); At one end of that waveguide (4), the reflective surface (3) is arrange, and a dielectric layer (2) and a graphene lay (1) are arranged on the side of the reflective surface (3) away from the waveguide(4) in sequence; Wherein the reflective surface (3), the dielectric layer (2) and the graphene layer (1) constitute a Fabry-Perot resonator can adjust the surface conductivity of graphene by applyingan external electric field on both sides of graphene to meet the resonance condition in a certain frequency range. Through multiple reflections and transmissions, the maximum directivity can be achieved in the direction of the edge emission. The invention has the advantages of simple structure, small volume, high directivity, small beam width, and adjustable working frequency of the Fabry-Perot resonance cavity.

An acceleration sensor includes a frame-shaped beam portion disposed above an XY substrate surface of a base in a floating state and a beam-portion supporting/fixing unit arranged to attach the beam portion to the base with support portions so as to be supported on two sides. The acceleration sensor also includes weight portions disposed above the XY substrate surface of the base in a floating state and connecting portions for attaching the weight portions to the beam portion in a cantilever state. The weight portions are movable in three axial directions including an X-axis direction, a Y-axis direction, and a Z-axis direction when the beam portion is deflected. The beam portion is provided with an X-axis-direction acceleration detection unit arranged to detect an acceleration in the X-axis direction, a Y-axis-direction acceleration detection unit arranged to detect an acceleration in the Y-axis direction, and a Z-axis-direction acceleration detection unit arranged to detect an acceleration in the Z-axis direction. The Z-axis-direction acceleration detection unit is disposed near proximal ends of Y-axis-direction extending portions of the beam portion, and the Y-axis-direction acceleration detection unit is disposed near distal ends of the Y-axis-direction extending portions.

Provided are an apparatus for measuring a thickness change, a system using the apparatus, a morphology microscope using the apparatus, a method of measuring a thickness change, and a method of acquiring a morphology image by using the measuring method, by which a minute thickness change may be precisely and accurately measured or a morphology image may be acquired by using an inexpensive and simple configuration. The apparatus includes a light source for irradiating beam onto a target object; a curved reflector for reflecting the beam reflected on the target object and incident onto the curved reflector; and a sensing unit for sensing the beam reflected on the curved reflector.

The invention discloses a beam scanning method for beam width through superposition design of a plurality of sub-beams. The beam scanning method comprises the following steps: when a base station broadcasts a pilot signal in a cell discovery stage, establishing an expression of cell search delay and the minimum number of scanning beams, and covering the whole area through K times of beam scanning;dividing NT array antennas into M sub-arrays by utilizing a one-dimensional uniform linear array, establishing a sub-array model, giving a total array response, analyzing a relationship between the number M of the sub-arrays and the minimum number K of scanning beams, and adjusting the direction of each sub-beam to realize flexible beam width scanning; and analyzing the relationship between the beamforming gain and the number of array antennas in the expected coverage area, and designing and optimizing the number K of beams with flexible widths to maximize the system capacity. According to the beam scanning method, the scanning number of the beams with the flexible width is optimized, and the expenditure of user discovery is reduced by designing the number of the beams with the optimal flexible width, and the system capacity is greatly improved, and the problem of a coverage gap between user discovery and data transmission is solved.

In a laser beam scanner according to the invention, L2/L1>L4/L3 is satisfied, where L2/L1 is the lateral magnification in the sub-scanning direction in an optical path from a polygon mirror to a photosensitive drum, and L4/L3 is the lateral magnification in the sub-scanning direction in an optical path from the polygon mirror to a beam detector. Accordingly, the light-receiving width of the beam detector can be reduced as compared with a conventional laser beam scanner where L2/L1=L4/L3.

The invention discloses an ultrathin high-gain narrow beam antenna. The ultrathin high-gain narrow beam antenna comprises an oscillator reflection plate, and an antenna oscillator and a feed network which are arranged on the oscillator reflection plate. The antenna oscillator comprises a first oscillator, a second oscillator and a third oscillator which are sequentially arranged on the same surface of the oscillator reflection plate at intervals, wherein each antenna oscillator is a square metal plate, the side length of the square metal plate is 0.25[lambda], and [lambda] represents the central wavelength of the antenna. According to the invention, the three antenna oscillators 2 with the side length of 0.25[lambda] are arranged on the same surface of the oscillator reflection plate at intervals, so that the structure is compact, and the thin and small antenna is favorably achieved. The beam width is reduced and the gain is increased by combining a specific oscillator reflection plateand a feed network through array combination. Through experimental simulation, the gain of the ultrathin high-gain narrow beam antenna provided by the present embodiment is above 9dBi, and the 3dB width is less than 45 degrees. The invention also discloses an anti-theft carpet.

The invention discloses a marine active phased array radar, and belongs to the field of radar system design. The marine active phased array radar mainly comprises a radar host and a servo turntable, wherein the radar host mainly comprises an active phased array antenna, a radio frequency processing unit, a digital intermediate frequency unit, a digital processing unit and a power supply unit. The active phased array radar provided by the invention can effectively discover and track far and near distance targets on the sea surface.

The invention discloses an implementation method for reducing the beam width of a heading beacon array antenna, and belongs to the technical field of heading beacons. The implementation method comprises the following steps: selecting a course beacon antenna array needing to be optimized, constructing an initial structure model, and generating a navigation channel CSB directional diagram; calculating the beam width according to the channel CSB directional diagram, and taking the fact that the beam width reaches or is smaller than a certain determined value as a target function; defining the interval between the arrays and the feed level amplitude of the arrays as optimization variables, changing the interval between the arrays or the feed level of the arrays, observing the change trend of a channel CSB directional diagram, and defining an initial value, a minimum value and a maximum value for the optimization variables in combination with a target function; submitting design analysis; comparing with a design target to generate an error function; and outputting a result if the error function is smaller than a specified value. By adopting the method provided by the invention, the CSB signal beam width of the heading beacon can be reduced under the condition of not increasing the number of antenna arrays.