Abstract:
Disclosed is a radar antenna. The disclosed antenna comprises: a dielectric substrate; a feed line for feeding an RF signal, wherein the feed line is formed on the dielectric substrate and has a line shape; a plurality of radiators each of which is vertically coupled to the feed line, and each of which has a bent structure comprising: a horizontal portion, and a vertical portion; a matching element coupled to one end of the feed line so as to adjust an impedance matching; and a grounding surface formed at the lower surface of the dielectric substrate. The length of the horizontal portion and the length of the vertical portion are set on the basis of the angle of the polarized wave of an RF signal to be radiated. The disclosed antenna may be manufactured to have a simplified and miniaturized structure.
Abstract:
Disclosed is a radar array antenna using open stubs. The disclosed antenna comprises: a dielectric substrate; a feed line for feeding an RF signal, wherein the feed line is formed on the dielectric substrate and has a line shape; a plurality of open stubs each of which is extended, at a predetermined angle, from the feed line and each of which is formed into a line shape with a predetermined width; a matching element coupled to an end of the feed line so as to adjust an impedance matching; and a grounding surface formed at a lower surface of the dielectric substrate. The plurality of open stubs operate as radiators, and at least some of the plurality of open stubs have different lengths so as to vary the intensity of a radiated signal at each open stub. The disclosed antenna may be manufactured to have a simplified and miniaturized structure.
Abstract:
The present invention provides a light emitting device package comprising: a package body which provides chip-mounting area and includes first and second lead terminals; an LED chip which is mounted at the chip-mounting area and electrically connected to first and second lead terminals; a groove unit which is formed around the LED chip in the chip-mounting area; and a wavelength converting unit which is made of resin containing a wavelength converting material and has a fence shape defined by the groove unit to enclose the LED chip.
Abstract:
Embodiments of the present invention relate to apparatus and method for supporting and transferring large area substrate in a vacuum condition. One embodiment of the present invention provides an apparatus comprising one or more end effectors having a plurality of end effector pads disposed thereon without mechanically joining to the one or more end effectors. In one embodiment, a plurality of end effector pad assemblies are coupled to one or more end effectors by magnetic force.
Abstract:
The present invention relates to a high-diffusion condenser sheet for improving the brightness and uniformity of light emitted by a backlight, and to a backlight assembly using same. The high-diffusion condenser sheet of the present invention includes a base layer constituting a base, and a pattern unit having lens-shaped protruding surfaces arrayed at random on the base layer, wherein each of the protruding surfaces is formed into different sizes with an average diameter of 71? to 120?.
Abstract:
The present invention relates to a tube rotation preventive apparatus of a movable tube trailer for refueling compressed natural gas. When driving a trailer vehicle including a tube trailer, the present invention prevents rotation of a storage tube around a coupling portion with a tube fixation plate caused by factors such as vibration or impact of chassis, etc. Accordingly, the damage of manifolds and other attachments, which are respectively connected to each storage tube for storing and refueling compressed natural gas, as well as the damage of the tube fixation plate and displacement of the storage tube caused by vibration of the storage tube are prevented. Therefore, the stability is remarkably improved by preventing an accident that may occur when using a tube trailer.
Abstract:
An apparatus and method incorporating at least two sensors (140A, 140B) that detect the presence of substrate defects such as breakage or misalignment, along the lengths of at least two parallel edges of a moving substrate (106). In one embodiment the apparatus includes a sensor arrangement that sense a substrate near at least to parallel edges for detecting substrate defects ' In another embodiment, the apparatus includes a robot (114 or 130) having a substrate support surface, and a sensor arrangement that sense a substrate near at least two parallel edges for detecting substrate defects.
Abstract:
The polycarbonate resin composition having good fatigue strength according to the present invention comprises (A) 80 to 98 parts by weight of a polycarbonate resin, (B) 0.1 to 10 parts by weight of a thermotropic aromatic liquid crystalline polymer resin and (C) 1 to 20 parts by weight of a core-shell grafted copolymer.
Abstract:
The disclosure relates to chips containing nucleic acid probes or primers and their use in methods to detect nucleic acid molecules of DNA viruses. The disclosure includes DNA chips in contact with a thermocycler capable of automatically regulating the temperature, temperature cycle times, and number of temperature cycles of the chips to provide genetic diagnosis in one step.
Abstract:
Disclosed herein is a bone fixation apparatus, comprising a bone screw having a head; a cap for supporting the top of the head of the bone screw; a compression bush for pushing the cap; a receiver member having a bore in which the cap and the compression bush are accommodated and the head of the screw is hitched, and a U-shaped channel through which a support bar is accommodated; a bar fixing nut threadedly coupled to the receiver member to fix the support bar, wherein the cap has a shape of a belleville spring in which a diameter of a lower end thereof is smaller than that of an upper end, and an upper surface thereof is concavely inclined toward an inner radial direction and a lower side thereof is formed with a curvature contacting an outer circumferential surface of the head.