Abstract: An antenna device of a portable device such as a smartphone includes a connecting member having a conductive case and mounted on a circuit board of the portable device in a manner such that the case is connected to a ground surface of the circuit board; a radiator spaced from the circuit board; and at least one connecting pin provided between the case and the radiator. The radiator is connected to the ground surface through the connecting pin and the case. The antenna device advantageously may be easily installed in the internal space of a miniaturized, lightened and/or slimmed portable device by practically using a conductive component, e.g., the case, of the connecting member.

Abstract: The present invention is related to a reinforcing member for a membrane for improving the pressure-withstanding property of the membrane having corrugations, and a membrane assembly having the reinforcing member and a method of constructing the membrane assembly. By providing a reinforcing member for a membrane having corrugations and installed in an insulating structural member of an LNG cargo, the present invention can prevent the collapse of the corrugation and attenuate shocks against a same load without increasing the facial rigidity of the corrugation, and improve the insulating property by forming an additional insulating layer.

Abstract: A planar beam steerable antenna may comprise a base substrate, a signal supply via hole passing through the base substrate, an active antenna disposed on a first surface of the base substrate, the active antenna including a horizontal dipole antenna having two unit antennas disposed apart from each other and a vertical dipole antenna having two unit antennas disposed apart from each other, a switching element disposed on a second surface of the base substrate and performing switching to provide a signal to one of the horizontal dipole antenna and the vertical dipole antenna, a signal supply line electrically connecting the active antenna with the switching element via the signal supply via hole, and a plurality of passive parasitic antennas disposed on the first surface of the base substrate apart from the active antenna.

Abstract: A communication terminal and an antenna apparatus of the communication terminal are provided. The communication terminal includes a body having a circuit board, an antenna element which is mounted inside the body and connected electrically to the circuit board and, when electric current is supplied via a main plate, resonant in a resonant frequency band for transmitting and receiving signals, and a metal case having an antenna pattern which is coupled to an edge of the body to be resonant and, when the antenna element is resonant, in the resonant frequency band for supporting operation of the antenna element.

Abstract: According to example embodiments, a semiconductor device includes a substrate, a plurality of word lines spaced apart from each other in a first direction on the substrate, a channel layer in a channel hole defined by the plurality of word lines, a gate insulating layer in the channel hole along an inner wall of the channel hole; and a self-aligned contact on an upper portion of the channel layer in the channel hole. The gate insulating layer is between the plurality of word lines and the channel layer. The first direction is perpendicular to an upper surface of the substrate. The channel hole exposes the upper surface of the substrate.

Abstract: The present invention is related to a reinforcing member for a membrane for improving the pressure-withstanding property of the membrane having corrugations, and a membrane assembly having the reinforcing member and a method of constructing the membrane assembly. By providing a reinforcing member for a membrane having corrugations and installed in an insulating structural member of an LNG cargo, the present invention can prevent the collapse of the corrugation and attenuate shocks against a same load without increasing the facial rigidity of the corrugation, and improve the insulating property by forming an additional insulating layer.

Abstract: A wireless communication terminal capable of changing a channel, and a channel changing method of the wireless communication terminal. The wireless communication terminal generates a plurality of channels by dividing at least part of a frequency band for ultra-wideband communications into a plurality of frequency sub-bands, receives a radio signal in at least one of the plurality of the channels, and changes a channel for receiving the radio signal. Accordingly, high quality communications are feasible between the transmitter terminal and the receiver terminal in an optimized channel environment, and signal interference between the receiver terminals connected to different transmitter terminals can be prevented. Additionally, it is possible to carry out the channel change rapidly and efficiently and to reduce the power consumption required to transmit and receive radio signals comprising a chaotic carrier signal.

Abstract: An antenna device of a portable device such as a smartphone includes a connecting member having a conductive case and mounted on a circuit board of the portable device in a manner such that the case is connected to a ground surface of the circuit board; a radiator spaced from the circuit board; and at least one connecting pin provided between the case and the radiator. The radiator is connected to the ground surface through the connecting pin and the case. The antenna device advantageously may be easily installed in the internal space of a miniaturized, lightened and/or slimmed portable device by practically using a conductive component, e.g., the case, of the connecting member.

Abstract: Disclosed are a noggin-derived peptide and a composition containing the same for promoting hair growth, improving skin conditions, providing anti-inflammatory function, or preventing or treating bone diseases. The disclosed noggin-derived peptide performs a function identical or similar to that of natural human noggin and is superior in stability and skin permeability as compared thereto. The composition containing the peptide of the present disclosure as an active ingredient exhibits remarkably superior effects in treating, preventing or improving growth factor-related symptoms, e.g. hair loss, skin conditions or cut, or treating, preventing or improving growth factor overexpression-related symptoms. Therefore, the superior activity and stability of the peptide of the present disclosure are greatly advantageous in application to medicine, quasi-drugs and cosmetics.

Abstract: A system for performing a local wireless communication using a predetermined frequency band divided into a plurality of channels. The system includes a hub for scanning each channel to identify available one of the plurality of channels and transmitting data over the available channel. The system further includes a sensor set to start to operate when the sensor detects a signal within the predetermined frequency band. The sensor spectrum-senses the signal of the frequency band for each channel, and analyzes a header of packet data for each channel, and receives and processes the packet data if the signal is identified to have a designated code.

Abstract: Disclosed herein are a polypropylene resin composition having excellent melt tension and a method for preparing the same. More particularly, a high melt tension polypropylene resin composition prepared by stepwise reaction of existing polypropylene resin with at least two organic peroxides having different half-life distributions, as well as a method for preparation thereof are described.

Abstract: Disclosed are a noggin-derived peptide and a composition containing the same for promoting hair growth, improving skin conditions, providing anti-inflammatory function, or preventing or treating bone diseases. The disclosed noggin-derived peptide performs a function identical or similar to that of natural human noggin and is superior in stability and skin permeability as compared thereto. The composition containing the peptide of the present disclosure as an active ingredient exhibits remarkably superior effects in treating, preventing or improving growth factor-related symptoms, e.g. hair loss, skin conditions or cut, or treating, preventing or improving growth factor overexpression-related symptoms. Therefore, the superior activity and stability of the peptide of the present disclosure are greatly advantageous in application to medicine, quasi-drugs and cosmetics.

Abstract: A communication terminal and an antenna apparatus of the communication terminal are provided. The communication terminal includes a board body having a structure of a flat panel, an antenna element which is arranged at one end of the body and, when electric current is supplied, resonant in a resonant frequency band for transmitting and receiving signals, and at least one blocking plate which is arranged around the antenna element and alters, when the antenna element is resonant, at least one of a radiation pattern and a radiation strength of the antenna element.

Abstract: A communication terminal and an antenna apparatus of the communication terminal are provided. The communication terminal includes a body having a circuit board, an antenna element which is mounted inside the body and connected electrically to the circuit board and, when electric current is supplied via a main plate, resonant in a resonant frequency band for transmitting and receiving signals, and a metal case having an antenna pattern which is coupled to an edge of the body to be resonant and, when the antenna element is resonant, in the resonant frequency band for supporting operation of the antenna element.

Abstract: Disclosed herein are a polypropylene resin composition having excellent melt tension and a method for preparing the same. More particularly, a high melt tension polypropylene resin composition prepared by stepwise reaction of existing polypropylene resin with at least two organic peroxides having different half-life distributions, as well as a method for preparation thereof are described.

Abstract: A radio frequency (RF) communication system having a chaotic signal generator and a method of generating a chaotic signal. The RF communication system includes a chaotic signal generator which generates a chaotic signal having a plurality of frequency components at a predetermined frequency band, a modulator which generates a chaotic carrier by combining the chaotic signal with a data signal which indicates information, and a transmission circuit which includes an antenna to transmit the chaotic carrier made at the modulator. The frequency signal generator comprises an oscillator which converts a DC bias power into a high frequency power, and a resonating unit which generates a wideband signal having a plurality of frequency components by passing a predetermined frequency band of the high frequency power signal.

Abstract: A communication apparatus using a chaotic signal and a method thereof are provided. The communication apparatus includes a correlator which multiplies source data by one of an optical orthogonal code (OOC) and a prime sequence code (PSC), and outputs transmission data, a transmission signal generating unit which generates a chaotic transmission signal by masking the transmission data with respect to a chaotic signal, and an antenna which transmits the chaotic transmission signal. As a result, multiple accesses are enabled, and a wireless communication system for short-distance operation, which is economic and low power-consuming, is provided.

Abstract: The present invention is related to a reinforcing member for a membrane for improving the pressure-withstanding property of the membrane having corrugations, and a membrane assembly having the reinforcing member and a method of constructing the membrane assembly. By providing a reinforcing member for a membrane having corrugations and installed in an insulating structural member of an LNG cargo, the present invention can prevent the collapse of the corrugation and attenuate shocks against a same load without increasing the facial rigidity of the corrugation, and improve the insulating property by forming an additional insulating layer.

Abstract: An apparatus for performing a local wireless communication using a frequency band. At least a part of the frequency band is divided into a plurality of channels. The apparatus includes a plurality of sensors, each sensor scanning each channel to identify whether each channel is used or not, selecting an unused channel as a data transmission channel, and transmitting data through the unused data transmission channel. The apparatus further includes at least one hub receiving and processing the data transmitted from each sensor through each corresponding data transmission channel.

Abstract: A system for performing a local wireless communication using a predetermined frequency band divided into a plurality of channels. The system includes a hub for scanning each channel to identify available one of the plurality of channels and transmitting data over the available channel. The system further includes a sensor set to start to operate when the sensor detects a signal within the predetermined frequency band. The sensor spectrum-senses the signal of the frequency band for each channel, and analyzes a header of packet data for each channel, and receives and processes the packet data if the signal is identified to have a designated code.