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公开(公告)号：KR1020140040328A
公开(公告)日：2014-04-03
申请号：KR1020120106240
申请日：2012-09-25
Applicant: 한국전자통신연구원
CPC classification number: H03L7/095
Abstract: Disclosed are a lock detector and a clock generator including the same. The lock detector includes a counter unit which provides a count value by counting a mismatch section of a first signal and a second signal which are comparison signals obtained by comparing the phase of a reference signal with the phase of a comparison signal, and a lock detecting unit which outputs a lock detection signal based on a comparison result by comparing the count value with a reference value. Therefore, a lock state of a phase locked loop is quickly and accurately detected. [Reference numerals] (110) Reference signal providing unit; (170) Divider; (300) Lock detecting unit
Abstract translation: 公开了一种锁定检测器和包括该锁定检测器的时钟发生器。 锁定检测器包括计数器单元，其通过对作为比较信号的比较信号和比较信号的相位进行比较而获得的第一信号和第二信号的失配部分进行计数来提供计数值，以及锁定检测 单元，其通过将计数值与参考值进行比较，基于比较结果来输出锁定检测信号。 因此，快速准确地检测锁相环的锁定状态。 （附图标记）（110）参考信号提供单元; （170）分隔线 （300）锁定检测单元
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公开(公告)号：KR1020130063919A
公开(公告)日：2013-06-17
申请号：KR1020110130542
申请日：2011-12-07
Applicant: 한국전자통신연구원
IPC: H03D13/00
CPC classification number: G01R23/00 , G01R23/005
Abstract: PURPOSE: A high-speed wideband frequency comparing apparatus is provided to rapidly compare a reference signal with a comparison target signal and to operate in a high speed or through broadband. CONSTITUTION: A pulse signal generating unit(12) outputs a reference signal and a comparison target signal in a pulse type signal. A capacitor(13) charges or discharges a voltage corresponding to the reference signal outputted from the pulse signal generating unit and outputs a reference voltage having a variable first frequency range. The capacitor charges or discharges the voltage corresponding to the comparison target signal outputted from the pulse signal generating unit and outputs a comparison target voltage having a variable second frequency range. A voltage comparing unit(14) outputs a comparison result signal by comparing the reference voltage with the comparison target voltage which are outputted from the capacitor. [Reference numerals] (11) Reference frequency generating unit; (12) Pulse signal generating unit; (13) Capacitor unit; (14) Voltage comparing unit; (15) Register unit; (16) Current source/sink unit; (17) Clock control unit
Abstract translation: 目的：提供一种高速宽带频率比较装置，用于将参考信号与比较目标信号进行快速比较，并以高速或宽带运行。 构成：脉冲信号生成部（12）以脉冲型信号输出基准信号和比较对象信号。 电容器（13）对从脉冲信号发生单元输出的参考信号进行充电或放电，并输出具有可变的第一频率范围的参考电压。 电容器对与从脉冲信号生成部输出的比较对象信号对应的电压进行充电或放电，输出具有可变的第二频率范围的比较对象电压。 电压比较单元（14）通过将参考电压与从电容器输出的比较目标电压进行比较来输出比较结果信号。 附图标记（11）参考频率发生单元; （12）脉冲信号发生单元; （13）电容器单元; （14）电压比较单元; （15）注册单位; （16）电流源/水槽单元; （17）时钟控制单元
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公开(公告)号：KR101239755B1
公开(公告)日：2013-03-12
申请号：KR1020090071284
申请日：2009-08-03
Abstract: 본 발명은 주파수 합성기에 대한 것으로, 이 장치는 기준 주파수와 피드백 주파수를 수신하고 비교하여 비교 신호를 출력하는 주파수/위상 검출기, 상기 비교 신호를 수신하여 상기 비교 신호에 대응하는 전류를 출력하는 전하펌프, 상기 전하 펌프의 출력 전류에 대응하여 전압을 생성하는 저역통과필터, 상기 저역통과필터의 전압을 수신하고, 이를 증폭하여 부스팅 전압을 생성하고, 수신 전압에 대응하는 주파수를 출력하는 전압제어 발진기, 그리고 상기 전압제어 발진기의 부스팅 전압을 수신하고, 직류 변환하여 상기 전하펌프의 전원 전압으로 인가하는 직류전압 변환기를 포함한다. 따라서, 전하 펌프의 공급 전원을 전압 제어 발진기로부터 제공함으로써, 주파수 합성기는 광대역, 저 위상잡음, 외부환경 또는 공정편차에 의한 성능저하 방지의 우수한 특성을 갖는다.
주파수 합성기, 전압 제어 발진기, 전하 펌프, 전원전압, 부스팅-
公开(公告)号：KR1020120064513A
公开(公告)日：2012-06-19
申请号：KR1020100125786
申请日：2010-12-09
Applicant: 한국전자통신연구원
IPC: H03L7/087
CPC classification number: H03L7/07 , H03K5/133 , H03L7/087 , H03L7/0891 , H03L7/091 , H03L7/093 , H03L7/0995
Abstract: PURPOSE: A PLL(Phase Locked Loop) circuit having a multiple-loop is provided to eliminate spur noises and phase noises from an output signal by reducing ripples from an output electric charge of a charge pump and a control signal of a ring oscillator. CONSTITUTION: A frequency detector(110) receives signals having a reference frequency and a feedback signal. A phase detector(120) detects the phase difference of a filtering signal and a reference signal. A first charge pump(130) controls a first output electric charge in response to a first up signal and a first down signal. A second charge pump(140) controls a second output electric charge in response to a second up signal and a second down signal. A pulse generator(150) generates a pulse signal having a predetermined pulse length in response to the reference signal. A loop filter(160) is composed of a low-pass filter. A voltage controlled oscillator(170) outputs an oscillation signal having a frequency corresponding to a control voltage. A divider(180) generates frequency division signals having the frequency lowered by a predefined dividing ratio. A low-pass filter(190) filters the oscillation signal outputted from the voltage controlled oscillator.
Abstract translation: 目的：提供具有多回路的PLL（锁相环）电路，通过减少来自电荷泵的输出电荷和环形振荡器的控制信号的波纹来消除来自输出信号的杂散噪声和相位噪声。 构成：频率检测器（110）接收具有参考频率和反馈信号的信号。 相位检测器（120）检测滤波信号和参考信号的相位差。 第一电荷泵（130）响应于第一上升信号和第一下降信号控制第一输出电荷。 响应于第二上升信号和第二下降信号，第二电荷泵（140）控制第二输出电荷。 脉冲发生器（150）响应于参考信号产生具有预定脉冲长度的脉冲信号。 环路滤波器（160）由低通滤波器构成。 压控振荡器（170）输出具有对应于控制电压的频率的振荡信号。 分频器（180）产生频率降低预定分频比的频分信号。 低通滤波器（190）对从压控振荡器输出的振荡信号进行滤波。
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公开(公告)号：KR1020110011512A
公开(公告)日：2011-02-08
申请号：KR1020100021678
申请日：2010-03-11
Applicant: 한국전자통신연구원
CPC classification number: H03B5/1296 , H03B5/1215 , H03B5/1218 , H03B5/1228 , H03B5/1246 , H03B2200/009 , H03B2201/036
Abstract: PURPOSE: A voltage controlled generator is provided to operate in a differential mode and a common mode by independently connecting a complementary active circuit element to both sides of a resonant unit. CONSTITUTION: A first oscillator comprises transistors(M5-M8) such as a complementary active element connected to both ends of a resonant unit(60) of a transformer base through an N-PMOS cross-connection structure. A second oscillator comprises transistors(M1-M4) such as a complementary active element connected to both ends of a resonant unit(60) of a transformer base through a gate coupling structure. A double band voltage controlled oscillator is formed by binding the first and second oscillators.
Abstract translation: 目的：通过独立地将互补有源电路元件连接到谐振单元的两侧，提供电压发生器以在差模和共模下工作。 构成：第一振荡器包括通过N-PMOS交叉连接结构连接到变压器基座的谐振单元（60）两端的互补有源元件的晶体管（M5-M8）。 第二振荡器包括通过栅极耦合结构连接到变压器基座的谐振单元（60）两端的互补有源元件的晶体管（M1-M4）。 通过结合第一和第二振荡器形成双频带压控振荡器。
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Patent Agency Ranking
公开(公告)号：KR1020100073948A
公开(公告)日：2010-07-01
申请号：KR1020090026593
申请日：2009-03-27
Applicant: 한국전자통신연구원
IPC: H03B5/24
CPC classification number: H03K3/0231 , H03B2201/0208 , H03K3/0322 , H03K5/135
Abstract: PURPOSE: A ring oscillator with a broadband output frequency is provided to simply change an oscillation frequency by controlling a control signal applied to the varactor. CONSTITUTION: Each delay cell comprises a transconductance unit(210), a reverse speed varying unit(230), and an output speed varying unit(270). The transconductance unit outputs a signal delayed for a preset time to first and second output nodes by reversing a first differential input signal of the delay cell. The reverse speed varying unit is connected to the transconductance unit. The reverse speed varying unit varies the revere speed of the first differential input signal according to the first control signal. An active load unit provides an active load to the transconductance unit by receiving a second differential input signal from the delay cell before two stages. The output speed varying unit varies the output speed of the differential output signal from the transconductance unit according to a second control signal.
Abstract translation: 目的：提供具有宽带输出频率的环形振荡器，通过控制施加到变容二极管的控制信号来简单地改变振荡频率。 构成：每个延迟单元包括跨导单元（210），反向速度变化单元（230）和输出速度变化单元（270）。 跨导单元通过反转延迟单元的第一差分输入信号来输出延迟预设时间的信号到第一和第二输出节点。 反转速度变化单元连接到跨导单元。 反转速度变化单元根据第一控制信号改变第一差分输入信号的转向速度。 有源负载单元通过在两级之前从延迟单元接收第二差分输入信号来向跨导单元提供有源负载。 输出速度变化单元根据第二控制信号改变来自跨导单元的差分输出信号的输出速度。
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公开(公告)号：KR1020100070978A
公开(公告)日：2010-06-28
申请号：KR1020090071284
申请日：2009-08-03
CPC classification number: H03L7/0898 , H03B5/24 , H03L7/099 , H03L7/18
Abstract: PURPOSE: A low voltage frequency synthesizer is provided to prevent performance deterioration caused by a broadband, low phase noise, external environment, and process deviation by supplying the supply power of a charge pump from a voltage-controlled oscillator. CONSTITUTION: A frequency/phase detector(140) receives and compares a reference frequency and a feedback frequency and outputs comparison signal. A charge pump(110) receives the comparison signal and outputs a current that corresponds to the comparison signal. A low band pass filter(120) generates a voltage in correspondence to the output current of the charge pump. A voltage-controlled oscillator receives the message of the low band pass filter. A DC voltage converter(150) receives the boosting voltage of the voltage-controlled oscillator.
Abstract translation: 目的：提供低压频率合成器，通过从压控振荡器提供电荷泵的电源，防止宽带，低相位噪声，外部环境和工艺偏差引起的性能恶化。 构成：频率/相位检测器（140）接收并比较参考频率和反馈频率并输出比较信号。 电荷泵（110）接收比较信号并输出对应于比较信号的电流。 低通滤波器（120）产生对应于电荷泵的输出电流的电压。 压控振荡器接收低通滤波器的消息。 直流电压转换器（150）接收压控振荡器的升压电压。
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公开(公告)号：KR1020090030102A
公开(公告)日：2009-03-24
申请号：KR1020070095432
申请日：2007-09-19
Applicant: 한국전자통신연구원
IPC: H03B5/08
CPC classification number: H03B5/1215 , H03B5/1253 , H03B5/1256 , H03B5/1293
Abstract: A voltage-controlled oscillator with wide frequency range is provided to increase the range of oscillation frequency by increasing variable capacitance by a plurality of MOS transistors connected to a LC resonance circuit. In a voltage-controlled oscillator, an LC resonance circuit(230) oscillates a frequency according to a control voltage and an amplifier circuit(250) amplifies the oscillation frequency. The LC resonance circuit includes a first and a second inductor, a variable capacitance unit, and a second variable capacitance(220). The first capacitance unit has a first and second varator which are connected with each other in parallel. The first variable capacitance has a first capacitance according to a first control voltage, and second variable capacitance has a firs and a second transistor which are connected with the varator in parallel and it has a second capacitance according to a second control voltage.
Abstract translation: 提供宽频率范围的压控振荡器，通过连接到LC谐振电路的多个MOS晶体管增加可变电容来增加振荡频率的范围。 在压控振荡器中，LC谐振电路（230）根据控制电压振荡频率，放大电路（250）放大振荡频率。 LC谐振电路包括第一和第二电感器，可变电容单元和第二可变电容器（220）。 第一电容单元具有彼此并联连接的第一和第二变化器。 第一可变电容根据第一控制电压具有第一电容，第二可变电容具有第一和第二晶体管，其与变容器并联连接，并且根据第二控制电压具有第二电容。
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公开(公告)号：KR101803384B1
公开(公告)日：2017-11-30
申请号：KR1020110026346
申请日：2011-03-24
Applicant: 한국전자통신연구원
Abstract: 본발명은센서리스비엘디씨모터시스템에관한것이다. 본발명의센서리스비엘디씨모터시스템은제 1 내지제 3 코일들을포함하는비엘디씨모터, 특정코일의전압과중성점전압을비교하는비교기, 특정코일의전압과상기중성점전압이같아지고특정시간후에제 1 및제 2 코일제어신호들을발생하는모터제어기, 제 1 및제 2 코일제어신호들에응답하여특정코일에전원전압또는접지전압을공급하거나특정코일을플로팅하는 3상인버터, 그리고특정시간을조절하여비엘디씨모터의구동방식을선택하는모드선택기로구성된다.
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公开(公告)号：KR101360502B1
公开(公告)日：2014-02-07
申请号：KR1020100087630
申请日：2010-09-07
Applicant: 한국전자통신연구원
CPC classification number: H03L7/083 , H03J2200/10 , H03L7/0891 , H03L7/0995 , H03L7/187
Abstract: 본 발명은 위상 고정 루프 회로에 관한 것으로, 더욱 상세하게는 자동 주파수 제어 회로를 포함하는 위상 고정 루프 회로 및 그것의 동작 방법에 관한 것이다. 본 발명의 실시 예에 따른 전압 제어 발진기는, 자동 주파수 제어 회로에 의해서 1차 제어되고, 루프 필터에 의해서 2차 제어된다. 상기 전압 제어 발진기는, 1차 제어되면 개략적으로 조정된 발진 신호를 출력하고, 2차 제어되면 미세적으로 조정된 발진 신호를 출력한다. 본 발명의 실시 예에 따르면, 위상 고정 루프 회로는 주파수 고정 시간이 빠르고, 넓고 안정된 주파수를 갖는 발진 신호를 출력할 수 있다. 뿐만 아니라, 위상 고정 루프 회로는 잡음 특성이 향상된다.
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