-
-
-
公开(公告)号：KR101881767B1
公开(公告)日：2018-07-25
申请号：KR1020170054097
申请日：2017-04-27
Applicant: 성균관대학교산학협력단
CPC classification number: H03F1/0277 , H03F1/223 , H03F1/56 , H03F2200/541
Abstract: 본명세서는간단한제어를통해고출력및 저출력모드에서고효을을얻을수 있는차동전력증폭기를개시한다. 본명세서에따른차동전력증폭기는제1 트랜지스터및 제2 트랜지스터를통해상호반전위상을갖는 2개의신호가입력되는제1 증폭기및 제2 증폭기; 상기제1 증폭기및 제2 증폭기에연결되어부하에출력신호를전달하는트랜스포머; 전원부; 상기전원부에연결되는모드전환스위치; 상기전원부와상기제1 증폭기사이에연결되는제1 인덕터; 상기모드전환스위치와상기제2 증폭기사이에연결되는제2 인덕터; 및상기모드전환스위치의온 오프동작을제어하는제어부;를포함할수 있다. 이때, 상기제어부는, 저출력모드에서상기모드전환스위치가오프(OFF)로동작하도록제어하고, 고출력모드에서상기모드전환스위치가온(ON)으로동작하도록제어할수 있다.
-
公开(公告)号：KR101611690B1
公开(公告)日：2016-04-14
申请号：KR1020140051772
申请日：2014-04-29
Applicant: 성균관대학교산학협력단
Abstract: 본발명의전력증폭장치는제1 및제2 바이어스제어신호들에따라가변하는제1 및제2 바이어스전압들을생성하고, 스위칭제어신호에따라제1 바이어스전압또는제2 바이어스전압중 하나를가변바이어스전압으로서출력하는동적바이어스변조기, 가변바이어스전압에따라바이어스되며, RF 신호를전력증폭하여안테나로출력하는전력증폭기및 전력증폭장치에대해설정되는평균출력전력설정치에따라제1 및제2 바이어스전압들의크기가각각가변되도록제1 및제2 바이어스제어신호들을생성하고, RF 신호의포락선을기준전압에비교하여스위칭제어신호를생성하는바이어스전압제어부를포함할수 있다.
-
公开(公告)号：KR101553007B1
公开(公告)日：2015-09-15
申请号：KR1020090046503
申请日：2009-05-27
Applicant: 한화테크윈 주식회사 , 성균관대학교산학협력단
CPC classification number: H04B1/525
Abstract: 본발명은 RFID 시스템이사용되는모든주파수대역에서송신누설신호를제거할수 있는송신누설신호제거장치및 방법에관한것이다. 송신누설신호제거장치는안테나와송신경로및 수신경로를연결하는방향성결합기; 및상기송신경로에서발생하여상기수신경로로유입되는제1 송신누설신호및 상기안테나에서반사되어상기수신경로로유입되는제2 송신누설신호와동일한크기및 반대의위상신호를갖는반사신호를상기수신경로로출력하는반사계수조절부를포함한다.
Abstract translation: 本发明涉及用于消除传输泄漏信号的装置和方法，该传输泄漏信号可以消除使用RFID系统的所有频带中的传输泄漏信号。 发送泄漏信号去除装置包括：用于将天线连接到发送路径和接收路径的定向耦合器; 以及在传输路径中产生并流入接收路径的第二传输泄漏信号和由天线反射并流入接收路径的第二传输泄漏信号， 以及用于输出反射系数的反射系数调整单元。
-
Patent Agency Ranking
公开(公告)号：KR1020130117415A
公开(公告)日：2013-10-28
申请号：KR1020120039750
申请日：2012-04-17
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
CPC classification number: H03F3/245 , H03F1/565 , H03F3/211 , H03F3/602 , H03F2200/192 , H03F2200/198 , H03F2200/204 , H03F2203/21139
Abstract: PURPOSE: An apparatus and a method for balanced power amplification are provided to offer a 90-degree hybrid splitter and a 90-degree hybrid combiner using at least one quarter-wave transmission line, thereby improving the efficiency of wireless power transmission. CONSTITUTION: An amplifier (600) comprises a 90-degree hybrid splitter (620), a first power amplifier (PA) (630), a second PA (640), and a 90-degree hybrid combiner (650). The 90-degree hybrid splitter divides an input signal into a first PA input signal and a second PA input signal which have 90-degree phase difference. The first PA amplifies the first PA input signal to generate a first PA output signal. The second PA amplifies the second PA input signal to generate a second PA output signal. The 90-degree hybrid combiner combines the first and second output signals having 90-degree phase difference of to generate an output signal. [Reference numerals] (AA) First PA input signal; (BB) First PA output signal; (CC) Output signal; (DD) Input signal; (EE) Second PA input signal; (FF) Second PA output signal
Abstract translation: 目的：提供一种用于平衡功率放大的装置和方法，以提供使用至少四分之一波长的传输线的90度混合分路器和90度混合组合器，从而提高无线功率传输的效率。 构成：放大器（600）包括90度混合分路器（620），第一功率放大器（PA）（630），第二PA（640）和90度混合组合器（650）。 90度混合分路器将输入信号分为具有90度相位差的第一PA输入信号和第二PA输入信号。 第一PA放大第一PA输入信号以产生第一PA输出信号。 第二PA放大第二PA输入信号以产生第二PA输出信号。 90度混合组合器组合具有90度相位差的第一和第二输出信号以产生输出信号。 （附图标记）（AA）第一PA输入信号; （BB）第一PA输出信号; （CC）输出信号; （DD）输入信号; （EE）第二PA输入信号; （FF）第二PA输出信号
-
公开(公告)号：KR1020120062622A
公开(公告)日：2012-06-14
申请号：KR1020110125968
申请日：2011-11-29
Applicant: 삼성전자주식회사 , 성균관대학교산학협력단
Abstract: PURPOSE: A multi-band antenna with multi-layers is provided to reduce the size of the antenna by piling up multi-layers having different dielectric permittivity. CONSTITUTION: A multi-band antenna with multi-layers comprises a power supply unit, a lower substrate(100), a middle substrate(200), and an upper substrate. The lower substrate touches the power supply unit and has first antenna patterns. The middle substrate is loaded on the lower substrate and has a space filled with air. The third substrate is loaded on the middle substrate and has second antenna patterns. The bandwidth of the antenna is changed depending on the thickness of the middle substrate.
Abstract translation: 目的：提供具有多层的多频带天线，通过堆叠具有不同介电常数的多层来减小天线的尺寸。 构成：具有多层的多频带天线包括电源单元，下基板（100），中间基板（200）和上基板。 下基板接触电源单元并具有第一天线图案。 中间基板装载在下基板上并具有填充有空气的空间。 第三基板被装载在中间基板上并且具有第二天线图案。 天线的带宽根据中间基板的厚度而改变。
-
公开(公告)号：KR1020110027145A
公开(公告)日：2011-03-16
申请号：KR1020090085101
申请日：2009-09-09
Applicant: 한화테크윈 주식회사 , 성균관대학교산학협력단
CPC classification number: Y02D70/10 , Y02D70/40 , Y02D70/42 , G06K19/0723 , H04B1/04 , H04B1/10 , H04B5/0062
Abstract: PURPOSE: An RFID reader is provided to improve the signal receiving sensitivity by reducing noise of AC power which is reflected in a signal receiving mode. CONSTITUTION: A control unit(21) performs overall operation control. An oscillation unit(25) generates oscillation signals in different phase. A transmission unit(221) transmits the transmission signal from control unit to the RFID tag. A reception unit(261) inputs the received signal from the RFID tag to the control unit. Therefore, the signal sensitivity is improved by reducing noise of AC power which is reflected in signal receiving mode.
Abstract translation: 目的：提供RFID读取器，通过降低信号接收模式反映的交流电源噪声来提高信号接收灵敏度。 构成：控制单元（21）执行整体操作控制。 振荡单元（25）产生不同相位的振荡信号。 发送单元（221）将来自控制单元的发送信号发送到RFID标签。 接收单元（261）将来自RFID标签的接收信号输入到控制单元。 因此，通过降低反映在信号接收模式中的交流电力的噪声来提高信号灵敏度。
-
公开(公告)号：KR1020110021044A
公开(公告)日：2011-03-04
申请号：KR1020090078613
申请日：2009-08-25
Applicant: 주식회사 피플웍스 , 성균관대학교산학협력단
CPC classification number: H03F1/3241 , H03F1/3276
Abstract: PURPOSE: A predistortion linearizer is provided to reduce the size of a non-linear power amplifier by increasing the integration of a circuit. CONSTITUTION: A serial predistortion linearization system(201) improves the linearity of a nonlinear amplifier by generating a signal which has the same size of a distortion signal while having the opposite phase to the distortion signal. A first resistor(202) is connected between the input terminal and the output terminal of the serial predistortion linearization system. A second resistor(203) is interposed between the input terminal of the input terminal of the serial predistortion linearization system and the ground. A third resistor(204) is installed between the output terminal and the ground of the serial predistortion linearization system. A power amplifier(205) is a nonlinear amplifier connected to the output terminal of the serial predistortion linearization system.
Abstract translation: 目的：提供一种预失真线性化器，通过增加电路的积分来减小非线性功率放大器的尺寸。 构成：串行预失真线性化系统（201）通过产生具有与失真信号相反的相位的失真信号的大小的信号来提高非线性放大器的线性度。 第一电阻（202）连接在串行预失真线性化系统的输入端和输出端之间。 在串行预失真线性化系统的输入端子的输入端子与地之间插入第二电阻器（203）。 第三电阻器（204）安装在串行预失真线性化系统的输出端子和地之间。 功率放大器（205）是连接到串行预失真线性化系统的输出端的非线性放大器。
-
公开(公告)号：KR1020110009815A
公开(公告)日：2011-01-31
申请号：KR1020090067212
申请日：2009-07-23
Applicant: 성균관대학교산학협력단
CPC classification number: H03F1/0266 , H03F1/0277 , H03F1/0288 , H03F1/3205 , H03F1/56 , H03F3/189 , H03F3/211 , H03F3/24 , H03F2200/102 , H03F2200/222 , H03F2200/27 , H03F2200/387 , H03F2200/451 , H03F2203/21142
Abstract: PURPOSE: A dynamic bias supply device with multiple switches is provided to remove unnecessary performance degradation due to an additional connection structure by including a plurality of switching units corresponding to a plurality of parallel power amplifiers. CONSTITUTION: A plurality of power amplifiers(432,442) share an envelop signal processor(412). An envelop signal processor generates a dynamic signal with a signal level suitable for a switching unit(414,450) according to the received envelop signal. The envelop signal processor provides a dynamic signal to each switching unit. A line(430,440) is connected between the switching unit and the power amplifier to supply the bias to the power amplifier from the switching unit.
Abstract translation: 目的：提供具有多个开关的动态偏置电源装置，通过包括对应于多个并联功率放大器的多个开关单元，来消除由于附加连接结构引起的不必要的性能下降。 构成：多个功率放大器（432,442）共享一个包络信号处理器（412）。 包络信号处理器根据接收的包络信号产生具有适合于切换单元（414,450）的信号电平的动态信号。 信封信号处理器向每个开关单元提供动态信号。 线路（430,440）连接在开关单元和功率放大器之间，以从开关单元向功率放大器提供偏置。
-
-
-
-
-
-
-
-
-
Search Results
67
records
(took 0.025 seconds)
