| Patent application number | Description | Published |
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| 20080258985 | Internal Antenna for Handset and Design Method Thereof - The present invention relates to an internal antenna for a handset and a design method thereof. The present invention provides an internal antenna for a handset and a design method thereof characterized in that a L/C element is attached to a slot line of an internal antenna, the attached L/C element is moved along the slot line, or the L/C element having a predetermined inductance/capacitance is attached and detached, thereby easily matching a resonant frequency. | 10-23-2008 |
| 20080311474 | Battery and Method for Producing the Same - Disclosed are a batter and a manufacturing method of the battery. The battery includes a first electrode, a second electrode, a first can electrically contacting the first electrode, a second can electrically contacting the second electrode, and a body. The first and second cans are fusion-bonded with the body to seal the battery. In addition, the manufacturing method includes the steps of fusion-bonding the first can with one end of the body and fusion-bonding the second can with the other end of the body. According to the invention, deformation by can-crimping does not occur. An efficient method of manufacturing a battery is provided, which can be applied to a polygonal button cell battery, in addition to a circular one. Further disclosed are a cylindrical zinc-air battery without leakage and a method of manufacturing the same. In the manufacturing method, a gap between both opposite end portions of a cathode membrane is filled with a resin and fusion-bonded, thus preventing leakage of zinc gel. Alternatively, both end portions of the cathode membrane are heated, pressurized or ultrasonic-radiated to be fusion-bonded, thereby preventing leakage of zinc gel. The invention provides a universal cylindrical zinc-air battery, which conforms to standard specifications. | 12-18-2008 |
| 20090033583 | SUBMINIATURE INTERNAL ANTENNA - Disclosed herein is a subminiature internal antenna, which exhibits a multi-band characteristic. The internal antenna includes a radiator electrically coupled at one end thereof to a feed element of a communication device and formed in a spiral shape as a whole. The radiator is disposed in such a manner as to extend at the other end thereof outwardly from the spiral shape. According to the present invention, the electromagnetic coupling is achieved in the radiator of the internal antenna and the other end of the radiator is disposed outwardly from the spiral shape so that the radiation interference is reduced to thereby obtain the multi-band characteristic. | 02-05-2009 |
| 20090142667 | CYLINDER TYPE ZINC-AIR CELL AND METHOD OF PRODUCING THE SAME - Disclosed herein is a cylindrical zinc-air cell and fabricating method thereof. The zinc-air cell comprises a film including an air anode membrane and a separator, the film being formed in a substantially cylindrical bent shape; and a junction element adapted to receive both ends of the film therein. The junction element is at least partly deformed to pressurize the both ends of the film so as to be joined to the film. By doing so, leakage of the zinc gel can be easily prevented in the fabrication of the cylindrical zinc-air cell, thereby extending the application area of the zinc-air cell. | 06-04-2009 |
| 20090153404 | SINGLE LAYER DUAL BAND ANTENNA WITH CIRCULAR POLARIZATION AND SINGLE FEED POINT - A single-layer dual-band antenna with circular polarization is disclosed. The antenna includes a first radiator formed on the top surface of a substrate and electrically coupled to a feeding element, and a second radiator formed on the top surface of the substrate, spaced apart from the first radiator by a predetermined distance and electromagnetically coupled with the first radiator. The antenna is thin because it has a single-layer structure. Furthermore, there is no deterioration in the radiation characteristic due to interference between the radiators. Moreover, impedances of the radiators can be independently matched at their frequency bands by adjusting the position of a feed point and the relative position of the radiators. | 06-18-2009 |
| 20090153424 | DUAL-BAND ANTENNA FOR RECEIVING VHF AND UHF SIGNAL AND COMMUNICATION DEVICE INCLUDING THE SAME - Disclosed herein is a dual-band antenna for a terminal for receiving VHF and UHF signals. A radiator of the dual-band antenna for a terminal for receiving VHF and UHF signals according to the present invention comprises a first patch bent at a part of a distal end thereof, and a second patch electrically connected to the first patch and formed in a spiral shape. A longitudinal portion of the second patch is constructed superposedly in a multi-structure in parallel with that of the first patch, so that the broadband of the VHF and UHF can be covered through an inverted L-shaped folded antenna structure. | 06-18-2009 |
| 20090169792 | DISPLAY WINDOW HAVING A RECESS AND METHOD FOR PRODUCING THE SAME - Disclosed are a display window in which a recess having a smooth surface is formed and method of producing the same. A recess having a smooth surface, which may look visually convex, is formed in the window of the present invention. Therefore, an external appearance of the window is beautiful. Furthermore, the recess and the through-hole are formed at a location in which the speaker is installed. Accordingly, a mobile phone assembly process can be simplified and become efficient. Meanwhile, in the method of producing the window according to the present invention, the recess is formed to have a circular bite. It is therefore possible to obtain a recess having a smooth surface. Furthermore, since the recess is processed during the plate process, a window having a high hardness, a good transparency, and a variety of shapes can be fabricated. | 07-02-2009 |
| 20090201219 | Antenna Integrated with speaker - The present invention relates to an assembled structure of an antenna and a speaker built in a wireless communication terminal, and more particularly, to an antenna integrated with speaker in which an antenna and a speaker are integrated into a single module. The present invention provides an antenna integrated with speaker comprising: an antenna carrier including an upper frame and a lower frame which are coupled to each other, the upper frame having a radiator mounted thereon; and a speaker mounted at the antenna carrier, wherein the speaker is coupled to a mounting hole formed at the lower frame through a coupling means from the outside of the antenna carrier. It is possible to obtain an effect of minimizing defect and loss of a speaker which may occur during the assembly of the antenna to thereby maximize efficiency of production. | 08-13-2009 |
| 20090220116 | ANTENNA AND SPEAKER ASSEMBLY AND WIRELESS COMMUNICATION DEVICE - Disclosed is an antenna-speaker assembly, including an antenna unit including a radiator, a speaker unit including a speaker and coupled to the antenna unit, and a sound-absorbing part formed to conform to a circumference of a coupling surface of the antenna unit and the speaker unit, the sound-absorbing part being interposed between the antenna unit and the speaker unit. According to the present invention, the antenna-speaker assembly equipped with the structure of generating clear sound is provided. Furthermore, in a wireless communication device including an antenna-speaker assembly, the antenna-speaker assembly include an antenna unit including a radiator, a speaker unit including a speaker and coupled to the antenna unit, and a sound-absorbing material formed on a circumference of a face where the antenna unit and the speaker unit are coupled in such a manner as to be interposed between the antenna unit and the speaker unit. | 09-03-2009 |
| 20090303007 | MULTIPLE BAND RFID READER DEVICE - There is disclosed a multi-band RFID reader, including a duplexer for separating a data signal received from a tag according to a frequency band, a directional coupler for diverging a part of the signal separated through the duplexer, a Digital Signal Processor (DSP) for determining a frequency band of the diverged signal and generating a control signal based on the determination result, and Radio Frequency (RF) switch for turning on/off transmission/reception modes in response to the control signal of the DSP. The multi-band RFID reader can read signals received from various kinds of tags by employing a multi-frequency band irrespective of frequency bands. | 12-10-2009 |
| 20090315786 | ANTENNA WITH INCREASED ELECTRICAL LENGTH AND WIRELESS COMMUNICATION DEVICE INCLUDING THE SAME - Disclosed is an antenna with an extended electrical length, including radiators ( | 12-24-2009 |
| 20100007560 | DIRECT FEEDING TYPE PATCH ANTENNA - Disclosed herein is a direct feeding type patch antenna. The direct feeding type patch antenna according to the present invention comprises: a feed element | 01-14-2010 |
| 20100019861 | RF SWITCH - The present invention provides an RF switch, including a diode adapted to operate as a switch when a control current is applied thereto, a first CRLH transmission line of a Φ degree phase, which provides one signal transfer path from a terminal | 01-28-2010 |
| 20100026416 | POWER DIVIDER AND POWER COMBINER USING DUAL BAND-COMPOSITE RIGHT/LEFT HANDED TRANSMISSION LINE - The present invention relates to a power divider and a power combiner employing dual band-Composite Right/Left-Handed (CRLH) transmission lines. A power divider including an input terminal and two output terminals according to the present invention includes two transmission lines each having two terminals connected to the input terminal and the output terminals, respectively, and two short-stubs having one terminals connected to the output terminals, respectively, and the other terminals connected to grounds. The transmission line may employ a first dual band-CRLH transmission line having a double value of a termination impedance, which is substantially connected to the output terminal, as a characteristic impedance, and the short-stub may employ a second dual band-CRLH transmission line, which has substantially the same value as that of the termination impedance as a characteristic impedance. The first dual band-CRLH transmission line and the second dual band-CRLH transmission line generate phase delay of 90 degrees in a high frequency band and phase delay of −90 degrees in a low frequency band with respect to an input signal. | 02-04-2010 |
| 20100032859 | INJECTION MOLDING SUBSTANCE AND MANUFACTURING METHOD THEREOF - A method of manufacturing an injection molding substance and the injection molding substance is provided. The method of manufacturing an injection molding substance including: providing a molding compound including a powder; making an intermediate mold by injection molding using the molding compound; cutting a portion of the intermediate mold; and sintering the cut intermediate mold. | 02-11-2010 |
| 20100039193 | INTERDIGITAL CAPACITOR, INDUCTOR, AND TRANSMISSION LINE AND COUPLER USING THEM - There is herein disclosed an interdigital capacitor, an inductor, and an LH transmission line and a coupler using the interdigital capacitor and the inductor. The interdigital capacitor comprises two finger sets which are substantially disposed in parallel with each other. Fingers of each finger set are overlapped at outer edges thereof with each other to thereby generate capacitance. The inductor is formed substantially spirally inside the transmission line, so that it can have a large inductance in a compact shape and can be used in a broad frequency band. The LH transmission line has a broad frequency band in a compact shape, which includes interdigital capacitors connected in series with each other and inductors connected in parallel with each other. In addition, the coupler employing the LH transmission line has an excellent couplability. | 02-18-2010 |
| 20100039745 | METHOD OF ANTISTATIC DEPOSITION ON COMPONENTS OF MOBILE PHONE - The present invention provides an antistatic deposition method of a wireless terminal component, which comprises depositing tin (Sn) or a tin-aluminum (Sn—Al) alloy on a molded material for a wireless terminal component. Also, the present invention discloses an antistatic deposition method of a wireless terminal component, which comprises: depositing tin (Sn) or a tin-aluminum (Sn—Al) alloy on a molded material for a wireless terminal component; and depositing one or more materials selected from the group consisting of Si, SiO, Ti, TiO, Al O and a mixture thereof on the deposited tin (Sn) layer or the deposited tin-aluminum (Sn—Al) alloy layer. The antistatic deposition method of a wireless terminal component according to the present invention has advantageous effects in that it overcomes the problems of the prior art that generation of static electricity adversely affects the performance of the inner circuits of the wireless terminal in case where a metal such as nickel (Ni), chrome (Cr) or the like is deposited on a wireless terminal component so as to create a mirror effect, and in that it can maintain an mirror effect and the performance of radio frequencies, can prevent peel-off of a tin (Sn) or tin-aluminum (Sn—Al) alloy deposited on a molded material for a wireless terminal component, and can improve scratch resistance and impact resistance of the wireless terminal component. | 02-18-2010 |
| 20100045532 | ANTENNA USING ELECTRICALLY CONDUCTIVE INK AND PRODUCTION METHOD THEREOF - Disclosed is an antenna having an antenna radiator formed by printing electrically conductive ink on a substrate. An antenna radiator according to an embodiment of the present invention is formed to the same thickness as a skin depth with respect to an operation frequency of the antenna. Therefore, an antenna can be fabricated using a small amount of electrically conductive ink while not reducing the gain of the antenna. Further, an antenna radiator according to another embodiment of the present invention is formed to the same thickness as a skin depth with respect to a predetermined frequency at a corresponding hot spot with respect to the frequency. Accordingly, an amount of electrically conductive ink used can be further reduced while maintaining the gain of the antenna. | 02-25-2010 |
| 20100045555 | Array Antenna System Automatically Adjusting Space Between Arranged Antennas - An array antenna system including: a base frame; a plurality of antenna elements which is arranged on the base frame; a driving unit which provides a driving power to each of the plurality of antenna elements when the plurality of antenna elements is moved or transformed on the base frame; a sensor unit which senses a change of a radio wave environment; and a control unit which transmits a driving signal to the driving unit according to a change of the radio wave environment, the change of the radio wave environment being sensed by the sensor unit. | 02-25-2010 |
| 20100073112 | RADIO FREQUENCY SWITCH AND APPARATUS CONTAINING THE RADIO FREQUENCY SWITCH - The present invention relates to A radio frequency (RF) switch and an apparatus including the RF switch. In an aspect of the present invention, an RF switch includes a transmission line having one end connected to an input terminal or an output terminal and the other end connected to a signal line and configured to transfer an RF signal, and a diode disposed between the input terminal and the transmission line or between the output terminal and the transmission line, the diode being configured to control whether or not to transmit the RF signal. In another aspect, an RF switch includes a transmission line having one end connected to an input terminal and the other end connected to an output terminal, and a diode disposed between the input terminal and the transmission line or between the output terminal and the transmission line, the diode being configured to control whether or not to transmit the RF signal. Here, a CRLH (Composite Right/Left-Handed) transmission line is employed as the transmission line. | 03-25-2010 |
| 20100090908 | ANTENNA OF PARALLEL-RING TYPE - The present invention relates to a parallel-ring type antenna which is reduced in entire physical length, and has a wider bandwidth and a more excellent return loss, while having the same resonant point, by changing a loading portion of a retractable antenna employing a top-loading method that can easily secure the physical length of the antenna. Further, characteristics electrically similar to those of a helical antenna can be achieved by applying the parallel-ring type to the loading portion of the monopole termination. In addition, the entire length of an antenna can be reduced, while accomplishing the same resonance as that of the helical antenna, by employing a change in return loss according to a change in the thickness of the parallel ring, the distance between the rings, the diameter of the ring, and/or the length of the loading portion. | 04-15-2010 |
| 20100134360 | INTEGRATED ANTENNA OF PARALLEL-RING TYPE - The present invention relates to a parallel-ring integrated antenna. The integrated antenna in accordance with the present invention includes a parallel ring including a plurality of rings and a central conductor, and a high dielectric body coupled to the parallel ring. Return loss can be changed depending on a thickness of the ring, a first diameter, i.e., a diameter of the ring, a distance between the rings or a second diameter, i.e., a diameter of a central conductor. Further, the high dielectric body has a groove formed therein to correspond to an external shape of the parallel ring. The parallel ring is coupled to the high dielectric body through the groove. Thus, the integrated antenna of the present invention can obtain a maximum gain and active performance while maintaining the size of an existing chip antenna and can have its size and structure changed easily and conveniently by combining the high dielectric body with the parallel ring. | 06-03-2010 |
| 20100149049 | BROADBAND ANTENNA OF DUAL RESONANCE - Disclosed herein is a dual-resonance broadband antenna, and more particularly, to such a dual-resonance broadband antenna in which dual resonance is caused to occur using an antenna consisting of a strip line, a microstrip line or the like having a meander pattern so as to receive a signal for a wireless communication service at a relatively low frequency band, particularly, a signal with a terrestrial digital multimedia broadcasting (T-DMB) service frequency band of 174-216 MHz among a very high frequency (VHF) band. Particularly, the dual-resonance broadband antenna of the present invention is remarkably red used in its size (length) as compared to a general helical antenna, a monopole antenna, a dipole antenna or the like while using a wireless communication service at a relatively low frequency band, thereby achieving miniaturization thereof. Further, it is possible to improve quality and reliability of the small-sized dual-resonance broadband antenna according to the present invention as well as enhance the qualities of a portable terminal and a transmission and reception device for wireless communication employing the antenna according to the present invention. | 06-17-2010 |
| 20100182210 | ULTRA-WIDEBAND ANTENNA HAVING A BAND NOTCH CHARACTERISTIC - The present invention discloses an antenna for ultra-wideband (UWB) communication having a band-stop characteristic. According to an embodiment of the present invention, the UWB antenna is a patch antenna employing microstrip feeding. In order to expand a bandwidth at a low frequency band, a stub is formed in a radiating element. Furthermore, since steps are formed in a ground plane, an antenna characteristic at an intermediate frequency band can be improved and a UWB characteristic can be obtained. According to another embodiment of the present invention, the UWB antenna is a patch antenna employing microstrip feeding and has a recess formed in the ground plane, thereby implementing the UWB characteristic. The antenna of the present invention has an inverse U-shaped slot formed in the radiating element, thus implementing the band-stop characteristic at the UNII band. In addition, the antenna of the present invention has includes a ground plane having a small area and has omnidirectional radiating patterns accordingly. | 07-22-2010 |
| 20100188302 | MULTIPLE BAND ANTENNA - The present invention provides a multiple band antenna, including a first radiation element adapted to resonate at a first resonant frequency band by employing a resonant length, which is reduced by a coupling effect with a neighboring radiation element, a power feed unit coupled to one lower side of the first radiation element, a first inductor coupled in series to the other lower side of the first radiation element, a second radiation element adapted to face the first radiator to thereby obtain the coupling effect, wherein the second radiation element has a predetermined lower portion coupled to the first inductor, a second inductor having one end coupled in series to a predetermined upper portion of the second radiation element, and a third radiation element coupled to the other end of the second inductor, wherein the third radiation element operates as one radiation element together with the second radiation element and resonates at a second frequency band. | 07-29-2010 |
| 20100201494 | SYSTEM AND METHOD FOR ALLOWING MULTIPLE RFID READER DEVICES TO READ RFID TAGS WITHOUT COLLISION - Provided are an RFID operating system and an RFID system operating method for allowing multiple RFID readers to read tags without collision. The RFID system operating method includes the steps of grouping RFID readers spaced apart by more than a spacing distance capable of avoiding collision between RFID readers into a single group to determine at least one group, classifying RPM readers included in each group into at least one sub-group based on a read time of each RFID reader, and driving the RFID readers such that RPM readers belonging to at least two different sub-groups that do not collide with each other simultaneously operate. According to the present invention, switching is performed sub-group by sub-group to reduce the number of switching operations and sub-groups can simultaneously operate to decrease a read time. | 08-12-2010 |
| 20100207826 | ANTENNA SYSTEM USING HOUSINGS OF ELECTRONIC DEVICE AND ELECTRONIC DEVICE COMPRISING THE SAME - An antenna system using a housing of an electronic device and an electronic device having the same are provided. The antenna system includes a first housing of an electronic device, which is formed of a conductive material and connected to a ground plane, and a second housing of the electronic device, which is arranged apart from the first housing by a predetermined distance and formed of a conductive material. A first end of the second housing is connected to a first power supply element. The first housing and the second housing are connected to each other through a first connecting element arranged apart from the first end of the second housing by a pre-determined distance. The antenna system secures a wide radiator to improve antenna efficiency and uses the housings of the electronic device as an antenna without using an additional element to reduce the size of the electronic device. | 08-19-2010 |
| 20100214181 | MULTI-BAND ANTENNA AND WIRELESS COMMUNICATION DEVICE INCLUDING THE SAME - There is herein disclosed a multi-band antenna which can adjust respective frequency bands independently. The multi-band antenna comprises a first radiation element having a PIFA structure and a second radiation element having a monopole structure. Also, a second ground terminal is disposed at one end of the first radiation element so as to be connected to a ground plane through a capacitor. The adjustment of the capacitance enables an independent adjustment of a first frequency band. The second radiation element includes a stub so as to allow the second frequency band to be independently adjusted, and a first sub-element and a second sub-element which defines a slit therebetween so as to allow the third frequency band to be independently adjusted. According to the present invention, it is possible to provide a multi-band antenna which can easily adjust respective frequency bands using multi-bands. | 08-26-2010 |
| 20100244999 | TRANSMISSION LINE - The present invention relates to a transmission line in which a physical value of an inductive element can be changed in various ways while minimizing a size. The transmission line of the present invention includes a transmission unit, a ground unit and inductive elements. The inductive element connects the transmission unit and the ground unit, and has a predetermined pattern. The inductive element is provided between two surfaces of a substrate. According to the present invention, a physical value of the inductive element, in particular, an inductance value can be changed in various ways while not increasing an overall size. Accordingly, a transmission line can be designed freely according to its application. | 09-30-2010 |
| 20100253579 | Antenna with 3-D Configuration - Disclosed herein is an antenna comprising: a first dielectric element having a first slit formed thereon; a first radiator formed on the first dielectric element; a second dielectric element coupled to the first dielectric element in such a fashion as to be fit into the first slit of the first dielectric element; and a second radiator formed on the second dielectric element and coupled electrically with the first radiator through the coupling between the first dielectric element and the second dielectric element. The present invention provides an antenna which can maximize an electrical length thereof in a limited space, can be designed even in a three-dimensional space, and can be fabricated simply at low cost. | 10-07-2010 |
| 20100297487 | HEATING DEVICE FOR A BATTERY AND BATTERY ASSEMBLY HAVING THE SAME - Disclosed are a heat-generating device for a battery and a battery assembly enabling a battery to stably produce electricity even under low-temperature conditions. The heat-generating device for a battery includes a heating element positioned on one side of the battery and generates heat through a reaction with the air. The heating element comprises a main body generating heat through the reaction with the air, and a supporting body wrapping the main body to adhere to the battery. Accordingly, the internal temperature of the battery can be maintained within possible activation temperature ranges to allow the battery to produce electricity, thereby making the battery performance sustainable under low-temperature conditions. | 11-25-2010 |
| 20100330436 | ZINC AIR CELL ADAPTABLE TO CELLULAR PHONE AND METHOD FOR MANUFACTURING THE SAME - The present invention relates to a method of fabricating a zinc-air cell and a zinc-air cell fabricated using the same. The zinc-air cell includes a cup adapted to function as a sealant of the cell, a film adapted to function as an anode of the cell and bonded on the cup, wherein the film has a first surface with a hydrophobic property and a second surface with ion permeability, and the second surface comes in contact with the cup, and a zinc gel adapted to function as a cathode of the cell and filled between the cup and the sealant. The method of fabricating a zinc-air cell includes preparing a cup having a central portion of a downward depressed shape and functioning as a sealant of the cell, bonding a film adapted to function as an anode of the cell on the cup, and filling a zinc gel, which functions as a cathode of the cell, in a space between the cup and the sealant. | 12-30-2010 |
| 20110032168 | ANTENNA USING COMPLEX STRUCTURE HAVING PERPENDICULAR PERIOD BETWEEN DIELECTRIC AND MAGNETIC SUBSTANCE - The invention provides an antenna that uses a complex structure in which a dielectric having a low dielectric constant and a magnetic substance having high magnetic permeability are arranged perpendicularly and periodically to improve the gain, efficiency, and bandwidth of the antenna while maintaining the miniaturization of the antenna which is an advantage of known antennas using a dielectric having a high dielectric constant. For this purpose, the provided antenna is characterized by including a substrate and a radiation patch formed on the substrate. The substrate is formed with a complex structure having a perpendicular period between the dielectric and the magnetic substance. | 02-10-2011 |
| 20110032169 | ANTENNA BASED ON DIELECTRO-MAGNETIC COMPOSITE STRUCTURE HAVING A PERIODIC LATTICE - The present invention aims to provide an antenna made of a complex structure wherein dielectric components having a low dielectric constant form a periodic lattice with a high-permeability magnetic components so as to increase the gain, efficiency and bandwidth of the antenna, while keeping the antenna size small, which is an advantage in conventional antennas using a dielectric with a high dielectric constant. To this end, the present invention provides an antenna based on a dielectro-magnetic composite structure, comprising: a substrate; and a radiation patch formed over the substrate, wherein the substrate is formed in a composite structure of a dielectric-magnetic periodic lattice. | 02-10-2011 |
| 20110045379 | INORGANIC CONDUCTIVE MEMBRANE, FUEL CELL CONTAINING THE SAME, AND METHOD FOR MANUFACTURING THEREOF - The present invention relates to an inorganic ion conductive membrane, which is capable of obtaining a fuel cell with a stable operation in all temperature, high performance, and no leakage of fuels by manufacturing the inorganic ion conductive membrane, composed of an inorganic membrane, using an anodic oxidization reaction and applying the manufactured inorganic ion conductive membrane to the fuel cell, a fuel cell including the inorganic ion conductive membrane, and a method of manufacturing the inorganic ion conductive membrane and the fuel cell. The method of manufacturing the inorganic ion conductive membrane includes the steps of (a) disposing a conductive wire, made of the same materials as a metal tube, within the metal tube, supplying an anode current to the conductive wire, and supplying a cathode current to the metal tube and (b) applying an electrolyte to the metal tube and the conductive wire, thereby forming an inorganic membrane comprising a plurality of pores in at least some of an inside wall and outside wall of the metal tube to which the cathode current has been supplied. | 02-24-2011 |
| 20110124487 | FORMATION VENTILATION GAS PURIFICATION COATING STRUCTURE USING INORGANIC MEMBRANE, AND METHOD FOR MANUFACTURING THEREOF - A structure of a carrier used for exhaust gas purification using an inorganic membrane and a method of producing thereof, in which an inorganic membrane made with an alumina film is produced using anode oxidation and the inorganic membrane is applied to a carrier used for exhaust gas purification, whereby the carrier works in stability at all temperatures and shows a high performance when exhaust gas generated from an engine, such as hydrocarbon, carbon monoxide, nitrogen oxide, and so on, passes through a plurality of shells formed with inorganic membranes. For this, provided is a method of producing a carrier used for exhaust gas purification using an inorganic membrane, including the steps of: (a) applying anode current to each of carrier modules, and loading at least one carrier module in a water tank, in which an electrolyte is circulated and to which cathode current is applied; and (b) forming a porous inorganic membrane on the outer skin of the carrier module. | 05-26-2011 |
| 20110128195 | EMBEDDED ANTENNA OF WIRELESS DEVICE AND METHOD OF MANUFACTURING THEREOF - Disclosed is an embedded antenna of a wireless device that can be formed by pattern printing and a manufacturing method thereof. The embedded antenna of a wireless device according to the present invention comprises a substrate accommodated in the wireless device; a radiation unit printed on an inner surface of a housing of the wireless device and connected to the substrate, for transmitting and receiving electrical signals; and an insulation unit printed on the radiation unit, for insulating the radiation unit. Here, the radiation unit includes first and second radiators sequentially printed as a pattern on the inner surface of the housing, and the insulation unit includes first and second insulators printed to cover the first and second radiators in order. According to the configuration like this, since the radiation unit and the insulation unit can be formed to have a minimum thickness by pattern printing, the size of the embedded antenna embedded in the wireless device can be minimized. | 06-02-2011 |
| 20110147643 | METHOD FOR PRODUCING NICKEL-MANGANESE-COBALT SPINEL FERRITE HAVING LOW PERMEABILITY LOSS AND NICKEL-MANGANESE-COBALT SPINEL FERRITE PRODUCED THEREBY - Disclosed herein is a method for producing a spinel ferrite which has a low permeability loss and a low dielectric loss so that the spinel ferrite can be widely used as a material for high-frequency (MHz) electronic components, and a spinel ferrite produced thereby. The method for producing the spinel ferrite comprises the steps of: providing nickel oxide, cobalt oxide, manganese oxide and iron oxide; wet-mixing the nickel oxide, the cobalt oxide, the manganese oxide and the iron oxide in methanol to obtain a mixture; collecting powder from the mixture and drying the collected powder; grinding the dried powder; and heat-treating the dried powder, thereby producing a nickel-manganese-cobalt spinel ferrite having a low permeability loss and a low dielectric loss. The nickel-manganese-cobalt spinel ferrite can be widely as a material for RF electronic components, and when it is applied to an antenna, it can reduce the length of the antenna and improve the bandwidth, efficiency and performance of the antenna. | 06-23-2011 |
