baber/WOPTO huggingface dataset:
Patent KR-20140104854-A (KR)
Title: Oxygen dissolution device
Inventor: KIM YOUNG GI
IPC: C02F3/20
Filed: 2013-02-21
Abstract: The present invention relates to an oxygen supply device including an inner case in which a first accommodating space is provided inside in a longitudinal direction, the inner case being provided with a partition wall which partitions the first accommodating space into a gas inflow chamber for gas inflow and a raw water inflow chamber for raw water inflow and a first discharge port for outward discharge of the raw water flowing into the raw water inflow chamber; an outer case that is formed to surround the inner case, is provided with a second accommodating space which accommodates the raw water discharged through the first discharge port, and is provided with a second discharge port for outward discharge of the raw water discharged to the second accommodating portion; a gas supply pipe that supplies gas to the gas inflow chamber; a raw water supply pipe that extends to the gas inflow chamber from out of the inner case and supplies raw water toward the gas inflow chamber; a mixing pipe that is connected to an end portion of the raw water supply pipe in the gas inflow chamber, has a hollow portion formed inside, and has multiple intake holes, through which the gas inflow chamber and the hollow portion communicate with each other, formed in an outer circumferential surface so that the gas inside the gas inflow chamber is taken in by using a negative pressure which is generated when the raw water supplied through the raw water supply pipe is moved; and an extension pipe with one side connected to an end portion of the mixing pipe and the other side extending to the raw water inflow chamber through the partition wall so that the raw water passing through the mixing pipe is guided to the raw water inflow chamber, multiple discharge holes communicating with the raw water inflow chamber being formed on an outer circumferential surface.
Patent KR-20140105923-A (KR)
Title: Metallic mold cooling system
Inventor: YOO JE RAK
IPC: B29C45/73
Filed: 2013-02-25
Abstract: With regard to a main body of a mold slow-cooling furnace comprising: an upper wall having a circulation fan formed at the center thereof; a side wall vertically and integrally coupled to the upper wall; and a lower wall touching the bottom of the side wall to form an inner cooling space, the present invention relates to a main body of a mold slow-cooling furnace characterized by a round depression part formed at the center of the upper side of the lower wall, wherein a cooling air injection part is formed on the inner circumferential surface of the depression part. The present invention can remove unnecessary residual stress, etc. due to a cooling process according to a uniform temperature distribution by using the main body of the mold slow-cooling furnace which has the said structure. Accordingly, the shrinkage fitting of the whole of a mold can be performed at the same temperature, thereby extending the life of the mold.
Patent KR-20140110152-A (KR)
Inventor: SHIN CHUNG HWAN
IPC: H01L31/0224
Filed: 2013-03-04
Abstract: Disclosed in the present invention are a thin film solar cell and a method for manufacturing the same. The thin film solar cell according to the present invention comprises: a substrate; a rear electrode formed on the substrate; and a light absorption layer formed on the rear electrode layer, wherein the rear electrode layer has 10% or less specific resistance variation under a high temperature condition.
Patent KR-20140111560-A (KR)
Inventor: MAENG CHUL HO
IPC: E05B47/06
Filed: 2013-03-11
Abstract: The present invention relates to a door lock mortise which is sequentially operated by operating a latch bolt to release a latch after a dead bolt of the door lock mortise is fully operated, thereby improving product stability and user convenience. To achieve the objective, the door lock mortise according to the present invention comprises: a dead bolt driving means to operate a dead bolt; a latch bolt driving means to release a locking state of a latch bolt with a time difference in a state that the dead bolt is unlocked by the dead bolt driving means; and a connection means which is located between the dead bolt driving means and the latch bolt driving means and selectively operates the dead bolt driving means and the latch bolt driving means to sequentially unlock the dead bolt and the latch bolt with a time difference.
Patent KR-20140112156-A (KR)
Inventor: SHIN HYO SOON
IPC: B22F9/02
Filed: 2013-03-13
Abstract: The present invention relates to a method for manufacturing powder composed of Cu(In,Ga)Se-_2 by a mechanical and chemical method. The composition ratio of source powder of Cu, In and Ga satisfies 0.7<=Cu/(In+Ga)<=1.0 and 0<Ga/(In+Ga)<=0.3. Therefore, the Cu(In,Ga)Se_2 powder can be synthesized to be in a chemical equilibrium state.
Patent KR-20130117665-A (KR)
Title: Drug refill apparatus and control method thereof
Inventor: KIM JUN HO
IPC: A61J1/00
Filed: 2013-03-18
Abstract: PURPOSE: A drug filling device and a control method thereof are provided to allow an authorized administrator to refill a drug cartridge with drug. CONSTITUTION: A drug filling device includes a main body, a cartridge mount unit, a guide driving unit (50), an unlocking unit (60), and a cartridge locking unit (70). The main body is mounted with the drug cartridge. The cartridge mount unit is mounted with the drug cartridge. The unlocking unit unlocks a cover. The cartridge locking unit locks or unlocks the drug cartridge mounted on the cartridge mount unit. The cartridge mount unit is rotationally arranged on the main body at a designated angle. [Reference numerals] (100) Hospital server; (21) Display unit; (22) Input unit; (23) Communication module; (24) Control unit; (25) Memory recogniation unit; (26) Motion detection unit; (50) Guide driving unit; (60) Unlocking unit; (70) Locking unit
Patent KR-20140116992-A (KR)
Inventor: KIM DOO HYUN
IPC: H04N19/00
Filed: 2013-03-25
Abstract: The present invention relates to an apparatus and a method for in-loop filtering based on a largest coding unit (LCU) to reduce an external memory access bandwidth. The apparatus for in-loop filtering according to an embodiment includes: an external memory to store decoded frames; an internal memory to store pixels used for a deblocking filtering and a sample adaptive offset filtering; a horizontal deblocking filter to perform the deblocking filtering on input pixels in a horizontal direction with respect to vertical edge boundaries within an input area by using a largest coding unit (LCU) and pixels adjacent to the LCU among the pixels stored in the internal memory; a vertical deblocking filter to perform the deblocking filtering in a vertical direction with respect to horizontal edge boundaries within the input area by using the pixels to which the deblocking filtering is applied in the horizontal direction; and a sample adaptive offset filter to perform the sample adaptive offset filtering using the pixels to which the deblocking filtering is applied in the horizontal direction within the input area.
Patent KR-20150017392-A (KR)
IPC: B41K1/02
Filed: 2013-04-02
Abstract: Disclosed are a method to manufacture a seal made from bamboo root, and the seal obtained thereby. More specifically, as each joint of the seal has a different shape, a problem of copying and theft of the seal can fundamentally be prevented. Moreover, cracking phenomenon of the seal can be suppressed from the beginning, and the seal made of bamboo root having antibacterial power can be manufactured.
Patent KR-20130112797-A (KR)
Title: Duct for air-conditioning circuit incorporating a noise-reducing device, and such a circuit incorporating it
Inventor: AUCLAIR ALEXANDRE
IPC: B60H1/00
Filed: 2013-04-03
Abstract: PURPOSE: A duct for an air conditioning circuit having a noise reducing device and a circuit including the same are provided to reduce manufacturing costs by not requiring the connection of a noise reducing device. CONSTITUTION: A duct (300) for an air conditioning circuit having a noise reducing device comprises a conduit (310), one or more fluid flow channels (230), and a tubular noise reducing device (220). The conduit includes male and female end fittings (111, 312). The fluid flow channels are formed between the axial inner end (221) and the axial outer end (222) of the noise reducing device. The noise reducing device is installed inside of the female end fitting in the axial and radial directions.
Patent KR-20140120671-A (KR)
Inventor: JANG JEONG SUN
IPC: H01Q7/06
Filed: 2013-04-04
Abstract: The present invention relates to a sheet structure used for a near field communication (NFC) or a wireless charge, capable of improving magnetic force, antenna properties or wireless charge properties and reducing manufacturing costs by coiling and installing a wire on a ferrite sheet at a deflection angle on the same plane, when compared to a loop antennal which uses an existing polymer sheet and a flexible printed circuit board (FPCB). The sheet structure according to the present invention comprises: a base sheet made of a polymer material; and a wire which is installed on one surface of the base sheet in a coiled state on the same plane, wherein the base sheet is made of Fe-Si-Cr ferrite or Fe-Si-Al ferrite, and the wire is installed at a deflection angle while being coiled in a quadrangular shape.
Patent KR-20140123237-A (KR)
Title: 실내 위치 측정시스템
Inventor: LEE DONG GEUN
IPC: G01S11/12
Filed: 2013-04-12
Abstract: 본 발명은 실내 위치 측정시스템에 관한 것으로서, 보다 상세하게는 실내에서 실시간으로 위치가 변동하는 이동수신장치의 위치를 측정하는 시스템에서, 고정송신장치는 고유 식별 정보를 갖고, 고정된 위치에 설치되어 전송 속도가 상이한 두 종류의 신호를 송수신함에 따라 신호의 수신시간 차이를 이용하여 이동수신장치의 위치를 측정하는 실내 위치 측정시스템에 관한 것이다.  
이를 위해 본 발명은 실시간으로 위치가 변동하는 이동수신장치의 위치를 측정하는 시스템에 있어서, 각각의 고유 식별 정보를 가지고, 고정된 위치에 설치되어 전송 속도가 상이한 제1 신호 및 제2 신호를 송신하는 다수의 고정송신장치; 상기 제1 신호 및 상기 제2 신호를 수신하여, 상기 두 신호의 수신 시간의 차를 기초로 상기 다수의 고정송신장치와의 거리를 각각 계산하는 이동수신장치; 상기 이동수신장치와 접속되며, 상기 계산된 고정송신장치로부터의 거리값을 이용하여 상기 이동수신장치의 위치 정보를 생성하는 호스트; 및 상기 제1 신호에 대한 제1 신호 모듈을 구동하여 메시지를 전송하고, 상기 제1 신호 모듈과 상기 제2 신호에 대한 제2 신호 모듈을 동시에 구동하여 제1 신호 및 제2 신호를 동시에 발생시키며, 상기 타이머부에서 생성된 제1 신호와 제2 신호의 수신 시간 정보를 이용하여 거리를 계산하는 제어부를 포함하여 이루어진다.
Patent KR-20140123265-A (KR)
Inventor: KIM DO YOON
IPC: G06Q40/02
Filed: 2013-04-12
Abstract: The present invention relates to a method of processing banking using a mobile terminal, and to a system thereof. The method of processing banking, which is performed by an integrated management device managing a plurality of branch office devices, comprises the following steps: receiving financial transaction request form data including transaction information and customer information from a terminal; transmitting a list of branch offices available for visits and information on the list of the branch offices to the terminal; receiving a selection result of a branch office which is selected to be visited from the terminal; and transmitting a visit notification message including the received financial transaction request form data to a branch office device which is selected by the terminal.
Patent KR-20130118778-A (KR)
Title: Tape holding mechanism, sheet peeling apparatus, and sheet peeling method
Inventor: TAGA YOICHIRO
IPC: H01L21/677
Filed: 2013-04-15
Abstract: PURPOSE: A tape holding mechanism, a sheet peeling device, and a sheet peeling method are provided to prevent the contamination of the surface of a wafer by using a back grind tape. CONSTITUTION: A moving part (2) moves a tape holding part (3). The moving part is bonded to a sheet by electrostatic attraction. A controller (4) controls the operation of the moving part. The tape holding part holds a peeling tape. The peeling tape has a lower surface bonded to the sheet. [Reference numerals] (1) Sheet separation device; (2) Moving part; (3) Tape holding part; (4) Controller
Patent KR-20140124439-A (KR)
Title: Method for encoding and decoding video using weighted prediction, and apparatus thereof
Inventor: MOON JOO HEE
IPC: H04N19/503
Filed: 2013-04-15
Abstract: A method for encoding a video according to an embodiment of the present invention comprises the steps of: encoding a temporal prediction block from an image signal; and performing brightness compensation for the temporal prediction block, wherein the step of performing the brightness compensation includes the steps of: converting the encoded temporal prediction block into a frequency domain; and acquiring a weighting factor for the brightness compensation based on the converted temporal prediction block.
Patent KR-20140124213-A (KR)
Inventor: CHOI HONG SIG
IPC: G07D11/00
Filed: 2013-04-16
Abstract: The present invention relates to a financial apparatus. The financial apparatus according to one aspect of the present invention includes a distinguishing unit which distinguishes a medium, a temporary integration unit which temporarily integrates the medium, and a medium storage box which stores the medium. The temporary integration unit includes a medium input and output hole to input or output the medium and an opening and closing part which opens and closes the medium input and output hole. The medium inputted to the temporary integration unit through the medium input and output hole is integrated in the medium storage box via the distinguishing unit.
Patent KR-20140124672-A (KR)
Inventor: OH YOUNG JU
IPC: A41C3/12
Filed: 2013-04-17
Abstract: The present invention provides a functional brassier having bands free of red marks, including a pair of cups having a shape of covering user′s chest; an under unit integrally connected to the bottom of the pair of cups; wing units attached to both sides of the under unit; and straps connected to the pair of cups and the wing unit. The under unit includes a core having a predetermined thickness. The wing unit is divided into a left elastic member and a right elastic member.
Patent KR-20140125109-A (KR)
Inventor: KIM HAE DONG
IPC: H04N13/00
Filed: 2013-04-18
Abstract: 깊이 표현 정도에 따른 입체영상 길이 가이드 장치 및 방법이 개시된다. 본 발명의 일실시예에 따른 입체영상 길이 가이드 장치는 컷 또는 프레임에 대해, 입체감을 설정하는 입체감 설정부, 상기 컷 또는 상기 프레임을 포함하는 장면에 대한 장면특성정보를 생성하는 장면 설정부, 상기 장면에 대해 제1 깊이계획정보를 선정하는 깊이계획 관리부, 상기 입체감, 상기 장면특성정보 및 상기 제1 깊이계획정보 중 적어도 하나를 이용하여, 상기 컷 또는 상기 프레임에 대한 권고영상길이를 선택하여 제공하는 영상길이 가이드부를 포함한다.
Patent KR-20140131006-A (KR)
Inventor: JU BOK SOON
IPC: F21L4/00
Filed: 2013-05-03
Abstract: The present invention relates to an LED silicone lantern having an insect repellent function to prevent all kinds of insects from moving to light even if a lighting is turned on by forming a geranium and herb repellent receiving part having an insect repellent function. The LED silicone lantern comprises a handle part which has a switch and is formed in a hollow shape so that a battery can be inserted; an LED lighting part coupled to one inner side of the handle part; a projection shade coupled to one end of the handle part to which the LED lighting part is coupled; and a stopper which has a repellent receiving part coupled to the other end of the handle part.
Patent KR-20140131038-A (KR)
Inventor: MUN HYUNG SUK
IPC: E01B3/00
Filed: 2013-05-03
Abstract: 본 발명은 앵커볼트 등을 이용하여 신속하고 용이하게 설치될 수 있으며, 종래의 일자형 침목에 비하여 동일한 면적에 대해 적은 수만을 설치하여도 레일에 대한 충분한 지지력을 발휘할 수 있도록 십자형상 또는 영문자 X자의 형상을 가지는 앵커 고정 방식의 십자형 침목에 관한 것이다.  
본 발명에서는 막대 형상을 가지는 제1침목부재(10)와; 막대 형상을 가지며 상기 제1침목부재(10) 위에 교차하여 배치되는 제2침목부재(20)로 구성되어; 상기 제1침목부재(10)와 상기 제2침목부재(20)가 서로 영문자 X자 형태로 교차되어 있는 구성을 가지는 것을 특징으로 하는 철도 레일 지지용 십자형 침목이 제공된다.
Patent KR-20140074800-A (KR)
Inventor: JUN JE HO
IPC: F16L13/10
Filed: 2013-05-07
Abstract: 본 고안은 압축공기를 이송하는 배관의 연결구조를 간단하고 쉽게 조립할 수 있고 향후 신속하게 분해할 수 있게 하여 조립과 분해가 용이하도록 한 알루미늄 공압배관 연결방법에 관한 것이다. 
본 발명은, 알루미늄으로 제1배관(1) 및 제2배관(2)을 구성하는 단계; 상기 절단가공된 제1배관(1)에 일단을 직경의 1.5배 길이로 확관시켜 확관부(11)를 형성하는 단계; 상기 제1배관(1)의 확관부(11)에 2액형 에폭시수지를 도포하여 접착부(3)를 형성하는 단계; 상기 2액형 에폭시수지가 도포된 확관부(11)에 제2배관(2) 을 삽입하여 결합하는 단계; 상기 제2배관(2)이 삽입된 제1배관의 확관부(11) 외주면을 롤링기로 압박하여 제1배관(1)의 확관부(11) 내면과 제2배관(2) 외면 사이 접착부(3)에 틈새가 없어질 때까지 롤링작업하는 단계; 상기 롤링작업 후 가사시간 종료되어 접착작업이 완료되면 공기압을 통과시키고 연결부위에 비눗물을 도포하여 누설시험하는 단계; 상기 누설시험 단계에서 누설이 발견되는 경우와 향후 배관의 교체, 보수가 요구되는 경우에 제1배관(1)의 확관부(11)에 제2배관(2)이 삽입되어 접착결합된 접착부(3)를 150~200℃ 이상의 열을 가해 2액형 에폭시수지를 녹여서 접착부(3)를 해체하고 제1배관(1)의 확관부(11)로부터 제2배관(2)을 빼내어 배관을 분해하는 단계;로 이루어지는 것알루미늄 공압배관 연결방법에 요지가 있다.
Patent KR-20140132961-A (KR)
Title: 하이브리드 필러 시스템을 이용한 열전도성 고분자 조성물, 이의 제조방법 및 이를 이용한 성형품
Inventor: YOO YOUNG JAE
IPC: C08J5/00
Filed: 2013-05-09
Abstract: 본 발명은 열전도성 필러와 단일벽 탄소나노튜브를 일정비로 혼합하여 사용하는 것을 포함하는 고분자 조성물 및 이의 제조방법에 관한 것이다. 
본 발명에서 제조되는 고분자 조성물은 판상형의 형상을 가지는 열전도성 필러와 단일벽 탄소나노튜브를 혼합하여, 필러 간 접촉율을 향상시켜 열전도성 필러를 단독으로 사용하였을 경우, 표면처리된 단일벽 탄소나노튜브를 사용하였을 경우보다 열전도도가 향상되는 우수한 효과가 있다.  또한, 열전도성 필러로 상용화된 필러를 사용하고, 제조공정이 단순하기 때문에 제조단가가 낮아 대량생산을 할 수 있어 전자 부품산업, 반도체 산업 등에 광범위하게 활용될 수 있다.
Patent KR-20140133227-A (KR)
Inventor: KANG EUNG CHEON
IPC: F16H21/28
Filed: 2013-05-10
Abstract: An axial reciprocating apparatus is disclosed. The axial reciprocating apparatus according to an aspect of the present invention comprises: a motor unit generating the axial rotational force; a rotating unit which is formed with a rotating cam to be projected to be eccentric in the axial direction and which is coupled to the motor unit to be rotatable about an axis; a shaft unit which is formed with a circular inclined surface corresponding to a rotation locus of the rotating cam on one side to change contact pressure between the rotating cam during the rotation of the rotating unit; a pressurizing unit for pressurizing the shaft unit to the direction of the rotating unit; a housing unit for covering the outer peripheral surface of the shaft unit to limit the movement excluding the axial direction of the shaft unit.
Patent KR-20140133755-A (KR)
Title: 노멀리 오프 타입 트랜지스터 및 그 제조방법
Inventor: TAKEYA MOTONOBU
IPC: H01L21/335
Filed: 2013-05-10
Abstract: 본 발명의 노멀리 오프 타입 질화물 트랜지스터 및 그 제조방법은, 최대 전류 저하 및 누설을 방지하고 고온 동작 시에 온 저항 상승률이 높아지는 것을 방지하고자 한다. 
본 발명의 노멀리 오프 타입 질화물 트랜지스터는, 상부면과 하부면을 갖고, 질화물계 반도체층을 포함하는 반도체 적층 구조체;  상기 반도체 적층 구조체의 상부면측 일부 영역에 형성되며 적어도 하나의 경사면이 형성된 스위치 반도체층;  상기 스위치 반도체층의 경사면 상부에 형성된 게이트 전극;  및 상기 반도체 적층 구조체 상부에 형성된 소스 전극과 드레인 전극을 포함할 수 있다.
Patent KR-20140134573-A (KR)
Title: 온열기능이 구비된 저주파 치료기
Inventor: KIM KYONG IL
IPC: A61F7/00
Filed: 2013-05-14
Abstract: 온열기능이 구비된 저주파 치료기에 대한 발명이 개시된다. 본 발명의 온열기능이 구비된 저주파 치료기는 전원을 공급하는 전원공급부와, 기능 및 설정값을 입력하는 입력부와, 상기 전원공급부로부터 전원을 공급받고 상기 입력부의 조작에 따라 기설정된 저주파 발생 패턴으로 생성된 저주파의 전기적 펄스를 갖는 저주파 신호를 전달하는 마이컴 및 상기 마이컴의 제어에 따른 기능 상태를 출력하는 출력부를 포함하는 본체부 및 상기 본체부에 구비된 접속단자와 케이블로 연결되고, 상기 마이컴으로부터 전달된 상기 저주파 신호를 출력하는 저주파출력부 및 상기 마이컴의 제어에 따라 온오프되어 발열하는 온열발생부가 구비되며, 신체 부위와 접촉하는 실리콘패드부를 포함하는 것을 특징으로 한다.
Patent KR-20140139179-A (KR)
Inventor: OH JUM DEUK
IPC: B27K5/02
Filed: 2013-05-27
Abstract: The present invention relates to a method for manufacturing a decorative plaque used for decoration of furniture such as a wardrobe and interior design, and to the decorative plaque using the same, and more specifically, to a method for manufacturing a decorative plaque consisting of the steps of processing one board among a hardwood plate, a laminate, a medium-density fiberboard (MDF), a particle board (PB) or a veneer to a board having the thickness of 2-5 mm; forming a constant uneven pattern by progressing a wood pulp material and the board to the bottom of a roller mold rotated by having uneven pattern surfaces of rows showing natural wood texture as at least two rows is repeated in the width direction and continued in the longitudinal direction, wherein the wood pulp material is made by having proper viscosity by mixing 80% of wood powder and 20% of additives such as vegetable oil, acetone, bond, etc, manufactured by mixing fine wood powder with other additives on one surface of the board; naturally drying the board having the uneven pattern for 3-4 hours; and painting paints on surfaces of the uneven pattern after naturally drying, coloring, and naturally drying the same for 3-4 hours, and to the decorative plaque using the same.
Patent KR-20140140459-A (KR)
Inventor: KIM GUNG HEE
IPC: B63B27/14
Filed: 2013-05-29
Abstract: The present invention relates to a ferry boat equipped with boarding facilities for the mobility handicapped and, more specifically, to a ferry boat equipped with boarding facilities for the mobility handicapped, which has the boarding facilities for the mobility handicapped installed therein in order for the mobility handicapped to safely and conveniently board the ferry boat and convenient facilities such as a handle, which is installed along the traffic line of the mobility handicapped who moves in a hull, installed therein, and therefore is conveniently used by the mobility handicapped using water transportation, wherein the boarding facilities include a ramp enabling a wheelchair used by the mobility handicapped to go up and down, and a wheelchair fixing unit to store the wheelchair in the hull of the ferry boat. According to the present invention, the ferry boat equipped with the boarding facilities for the mobility handicapped comprises a boarding unit having a predetermined space formed therein in order for a user to board the ferry boat transporting the user; a travelling unit having a wheelhouse installed therein to operate the ferry boat; and a ramp unit allowing the wheelchair to go up and down the boarding unit. The ramp unit includes an entrance installed to be opened toward the side of the boarding unit; a ramp which has the edge of the lower end connected to the hull by a hinge to open and close the entrance, and is capable of rotating in the direction of opening and closing the entrance; and an opening/closing drive means which rotates the ramp, and fixes the ramp in the opened state of the entrance or in the closed state of the entrance after the rotation of the ramp.
Patent KR-20140147627-A (KR)
Inventor: LEE SOON BOK
IPC: B60R21/232
Filed: 2013-06-20
Abstract: The present invention relates to a curtain airbag comprising: a first chamber corresponding to a first row which is a driver seat of a vehicle; a second chamber corresponding to a second row which is a rear seat of the vehicle; and an injection hole into which expansion gas from an inflator is injected. The first chamber includes a first inclined surface which is inclined downwards from the top end surface toward the injection hole. The second chamber includes a second inclined surface which is inclined downwards from the top end surface of the second chamber toward the injection hole. The bottom end of the injection hole having a certain length is formed in a position lower than the top end of both sides of the first and second chambers to increase the height of the first and second chambers by lowering the height of a Y-sock, thereby protecting passengers by inflating the curtain airbag to a lower position.
Patent KR-20150000539-A (KR)
Inventor: YOON JAE HYUK
IPC: H03F1/32
Filed: 2013-06-24
Abstract: The present invention relates to a predistorter using virtual grounding signals. According to the present invention, the predistorter using virtual grounding signals of a first amplifier in a power amplifying apparatus having a first and a second amplifier which are differential amplifier of an input signal comprises: a power sensing unit for sensing an alternating current signal from a virtual grounding node of the first amplifier to convert the same into a direct current voltage; and a matching unit for controlling Q-factor of a signal for a spot where a second end is connected using a capacitor of which the capacity is variable corresponding to the size of the direct current voltage, in which a first end is connected to the power sensing unit while the second end is either connected to an input end of the first amplifier, a spot between the first and second amplifiers or an output end of the second amplifier. According to the predistorter using virtual grounding signals, the present invention can sense even harmonic waves signals produced in the virtual grounding node of the first or the second amplifier and using the same, improve the linearity of am amplification circuit as the Q-factor of the input matching unit, the output matching end or a middle matching end of the two amplifiers is controlled.