-
公开(公告)号：KR101420022B1
公开(公告)日：2014-07-17
申请号：KR1020120154448
申请日：2012-12-27
Applicant: 전자부품연구원
IPC: H01L41/193
Abstract: 본 발명은 열전 나노컴포지트에 관한 것으로, 보다 상세하게는 본 발명의 일 실시예에 따른 열전 나노컴포지트는, 폴리머 매트릭스 내에 나노 구조체가 분산된 형태를 가지며, 상기 폴리머 매트릭스에 대한 상기 나노구조체의 단위 면적당 조성비는 1 wt% 이상 95 wt% 이하일 수 있다.
본 발명에 의하면, 높은 열전 특성(thermoelectric effect) 및 전기전도도를 나타내는 열전 나노컴포지트를 제공할 수 있다.-
公开(公告)号：KR1020140084920A
公开(公告)日：2014-07-07
申请号：KR1020120154951
申请日：2012-12-27
Applicant: 전자부품연구원 , 전북대학교산학협력단
Abstract: The present invention relates to a voltage mode class-S amplifier with an impedance control circuit, capable of highly controlling the impedance of a harmonic signal and applying the impedance to a communications signal with high efficiency in a voltage mode class-S amplifier structure. The voltage mode class-S amplifier including the impedance control circuit for removing harmonics according to the present invention includes a BPDSM which converts an RF input signal into a PWM signal; a switching power amplifier which amplifies the PWM signal; and a band-pass filter which removes the harmonics from the amplified signal. The impedance control circuit which matches load impedance with the characteristic impedance of a natural frequency band is additionally connected to the band pass filter.
Abstract translation: 本发明涉及一种具有阻抗控制电路的电压模式类别S放大器，其能够高度控制谐波信号的阻抗并且在电压模式类S放大器结构中以高效率将通信信号施加于通信信号。 包括根据本发明的用于去除谐波的阻抗控制电路的电压模式等级S放大器包括将RF输入信号转换为PWM信号的BPDSM; 一个放大PWM信号的开关功率放大器; 以及从放大信号中除去谐波的带通滤波器。 将负载阻抗与固有频带的特性阻抗匹配的阻抗控制电路另外连接到带通滤波器。
-
公开(公告)号：KR101386656B1
公开(公告)日：2014-04-17
申请号：KR1020130013180
申请日：2013-02-06
Applicant: 전자부품연구원
CPC classification number: H03F1/0227 , H03F1/30 , H03F1/565 , H03F3/217
Abstract: The present invention relates to a tunable power amplifier. The tunable power amplifier according to the present invention amplifies the power of an LTE signal with high efficiency. According to the present invention, the efficiency of the amplifier is improved by maximally maintaining a pulse waveform of the LTE signal converted into a pulse signal and amplifying the pulse waveform. Specially, the efficiency is additionally improved by applying a high efficiency method of a class F structure. An optimum amplification feature is obtained by obtaining optimal matching according to a bias condition by a dual supply injection.
Abstract translation: 本发明涉及可调谐功率放大器。 根据本发明的可调功率放大器以高效率放大LTE信号的功率。 根据本发明，通过最大程度地维持转换成脉冲信号的LTE信号的脉冲波形并放大脉冲波形来提高放大器的效率。 特别地，通过应用F级结构的高效率方法来另外提高效率。 通过双电源注入获得根据偏置条件的最佳匹配获得最佳放大特征。
-
-
-
Patent Agency Ranking
公开(公告)号：KR1020130076352A
公开(公告)日：2013-07-08
申请号：KR1020110144910
申请日：2011-12-28
Applicant: 전자부품연구원
CPC classification number: H03F3/2171 , H03F1/223 , H03F1/3264 , H03K17/165
Abstract: PURPOSE: A switching power amplifier is provided to improve linearity by removing the noise of the output power. CONSTITUTION: A switching power amplifier (100) includes a switching driver (110) and an output power compensator (120). The switching driver operates by receiving a driver power and outputs an output power corresponding to the driver power according to an input signal to an output node. The output power compensator operates by receiving a compensation power higher than the driver power and senses the variation of a voltage level of the output power by negatively feeding back the output power on the output node. The output power compensator maintains the output power in a constant voltage level by increasing or decreasing the capacity of current flowing through the output node. [Reference numerals] (130) Filter
Abstract translation: 目的：提供开关功率放大器，通过消除输出功率的噪声来提高线性度。 构成：开关功率放大器（100）包括开关驱动器（110）和输出功率补偿器（120）。 切换驱动器通过接收驱动器电源进行操作，并将与驱动器功率相对应的输出功率根据输入信号输出到输出节点。 输出功率补偿器通过接收高于驱动器功率的补偿功率来操作，并且通过对输出节点上的输出功率进行负反馈来感测输出功率的电压电平的变化。 输出功率补偿器通过增加或减少流过输出节点的电流的容量来将输出功率维持在恒定的电压水平。 （附图标记）（130）滤波器
-
公开(公告)号：KR101189807B1
公开(公告)日：2012-10-10
申请号：KR1020100139496
申请日：2010-12-30
Applicant: 전자부품연구원
IPC: H04W16/18
Abstract: 호스트의 네트워크 구성 방법이 제공된다. 본 발명의 한 실시예에 따른 네트워크 구성 방법은 거리 측정용 신호를 브로드캐스트하고, 적어도 하나의 디바이스로부터 디바이스 식별자가 포함된 거리 측정용 신호를 수신하며, 상기 거리 측정용 신호를 브로드캐스트한 시점과 수신한 시점의 차이를 이용하여 상기 호스트와 상기 적어도 하나의 디바이스 간의 거리를 계산하고, 계산한 거리에 기초하여 네트워크를 구성한다.
-
公开(公告)号：KR1020120056554A
公开(公告)日：2012-06-04
申请号：KR1020100118148
申请日：2010-11-25
Applicant: 전자부품연구원
IPC: C08L37/00 , C08L79/00 , C08K5/1539 , H05K1/02
Abstract: PURPOSE: A highly heat-resistant composition is provided to have excellent thermal resistance by having glass transition temperature of 220 °C or higher, thereby maintaining substrates without damage even under high temperature process condition like lead-free reflow process. CONSTITUTION: A highly heat-resistant composition comprises a cycloaliphatic resin in chemical formula 1 as a main component. In chemical formula 1, R is a C1-20 alkyl group, n is an integer from 10-30. The highly heat-resistant composition comprises a cyclo aliphatic resin in chemical formula 1, and 10-100.0 parts by weight of a cyanate ester resin in chemical formula 2.
Abstract translation: 目的：通过玻璃化转变温度为220℃以上，提供高耐热性组合物以具有优异的耐热性，从而即使在无铅回流工艺等高温工艺条件下也能保持基板不损坏。 构成：高耐热组合物包含化学式1中的脂环族树脂作为主要成分。 在化学式1中，R为C 1-20烷基，n为10-30的整数。 高耐热组合物包含化学式1中的环脂族树脂和10-100.0重量份化学式2中的氰酸酯树脂。
-
公开(公告)号：KR1020120025277A
公开(公告)日：2012-03-15
申请号：KR1020100087572
申请日：2010-09-07
Applicant: 전자부품연구원
IPC: C09J163/00 , C09J7/02 , C09J11/00 , H01L21/58
CPC classification number: C09J163/00 , C09J7/22 , C09J7/30 , C09J7/35 , C09J11/00 , C09J2201/61 , C09J2203/326 , C09J2205/102 , H01L21/6836 , H01L2221/68327
Abstract: PURPOSE: A composite material composition and a substrate using thereof are provided to improve thermal resistance and lower dielectric property by including high thermal resistant epoxy resin and hardener. CONSTITUTION: A composite material composition comprises 14-34 weight% of inorganic filler including hollow glass microsphere which concurrently controls low dielectric property and high thermal resistance property, 31-51 weight% of epoxy based adhesive which controls adhesive force and high thermal resistance property of the tape, 23-43 weight% of acid anhydride based hardener which controls the high thermal resistance property through curing reaction with the adhesive of acid anhydride, and 0.1-0.3 weight% of curing accelerator which controls the thermal characteristic and curing reaction of the tape.
Abstract translation: 目的：提供一种复合材料组合物及其使用的基材，以通过包括高耐热性环氧树脂和硬化剂来改善耐热性和降低介电性能。 构成：复合材料组合物包含14-34重量％的无机填料，其包括同时控制低介电性和高耐热性的中空玻璃微球，31-51重量％的环氧基粘合剂，其控制粘合力和高耐热性 胶带，23-43重量％的酸酐类硬化剂，其通过与酸酐的粘合剂进行固化反应来控制高耐热性，和0.1-0.3重量％的固化促进剂，其控制带的热特性和固化反应 。
-
公开(公告)号：KR101090053B1
公开(公告)日：2011-12-07
申请号：KR1020090056311
申请日：2009-06-24
Applicant: 전자부품연구원
Abstract: 본 발명은 외력에 의한 기계적 에너지로부터 전기적 에너지로 변환시키는 효율을 증대시킬 수 있는 압전 발전기를 제공하기 위한 것으로, 이를 위해 본 발명은 내측 둘레를 따라 중심부를 향하는 적어도 하나 이상의 스포크(spoke)가 형성된 제1 지지부재와, 상기 스포크 상부에 형성된 제1 전극과, 상기 제1 전극 상부에 형성된 압전체와, 상기 압전체 상부에 형성된 제2 전극과, 상기 제2 전극 및 상기 중심부와 중첩되도록 상기 제2 전극 상부에 형성된 제2 지지부재를 포함하는 압전 발전기를 제공한다.
압전 발전기, 압전 세라믹
-
-
-
-
-
-
-
-
-
Search Results
172
records
(took 0.032 seconds)
