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    • 1. 发明公开
    • 링형 전압 제어 발진기
    • 环型电压控制振荡器
    • KR1020140117938A
    • 2014-10-08
    • KR1020130032917
    • 2013-03-27
    • 삼성전기주식회사
    • 김규석나유삼
    • H03K3/0231H03K3/354H03K5/135
    • H03K3/0322H03K5/133H03K2005/00208H03L7/0995
    • The present invention relates to a ring type voltage controlling oscillator. In the ring type voltage controlling oscillator according to the present invention, multiple delay cells are connected in a chain form. The delay cell includes: first to fourth MOSs which control an oscillation frequency which oscillates through an output terminal (Vout); and a fifth MOS which is connected to the common node of each source of the first to fourth MOSs and controls the first to fourth MOSs. The present invention respectively controls a control voltage (Vctrl) of a fixed size which is applied to the gate terminal of the fifth MOS, a body voltage (Vbody) which is applied to a body, and a voltage which is applied to the gate terminal and the body. The present invention is able to improve a Kvco (VCO′s gain) by controlling two voltages at the same time by respectively applying to the gate and body of the fifth MOS which controls the first to fourth MOSs which control an oscillation frequency in the delay cell, and thereby is able to improve a PLL system function and a phase noise feature.
    • 本发明涉及一种环型电压控制振荡器。 在根据本发明的环型电压控制振荡器中,多个延迟单元以链式连接。 延迟单元包括:控制通过输出端子(Vout)振荡的振荡频率的第一至第四MOS; 以及连接到第一至第四MOS的每个源的公共节点并控制第一至第四MOS的第五MOS。 本发明分别控制施加到第五MOS的栅极端子的固定尺寸的控制电压(Vctr1),施加到主体的体电压(Vbody)和施加到栅极端子的电压 和身体。 本发明能够通过分别施加到控制在延迟中控制振荡频率的第一至第四MOS的第五MOS的栅极和主体同时控制两个电压来提高Kvco(VCO的增益) 从而能够改善PLL系统功能和相位噪声特征。
    • 4. 发明公开
    • 광대역 출력 주파수를 갖는 링 발진기
    • 环形振荡器具有宽频范围
    • KR1020100073948A
    • 2010-07-01
    • KR1020090026593
    • 2009-03-27
    • 한국전자통신연구원
    • 이희동김귀동권종기
    • H03B5/24
    • H03K3/0231H03B2201/0208H03K3/0322H03K5/135
    • 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.
    • 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。
    • 5. 发明公开
    • 링 오실레이터와 이를 이용한 멀티 위상 클럭 보정 회로
    • 环振荡器和多相时钟校正电路
    • KR1020100003038A
    • 2010-01-07
    • KR1020080063134
    • 2008-06-30
    • 에스케이하이닉스 주식회사
    • 송택상권대한윤대건
    • G11C11/4076G11C11/4074
    • H03K3/0322H03K23/542G11C11/4076G11C7/222G11C2207/2254
    • PURPOSE: A ring oscillator and a multi phase clock correction circuit using the same are provided to reduce power consumption at high speed by generating a clock signal of a CML level. CONSTITUTION: In a device, a ring oscillator generates first-fourth clock signals of CML level which have expected different levels. The ring oscillator includes the first and second buffer unit(210,230), and each first and second buffer has a cross-coupled structure. The first and the second buffer generate first-fourth clock signals according to a bias voltage having expected voltage level. The first buffer buffers a second and fourth clock signal corresponding to the output signal of the second buffer and generates a first and third clock signal.
    • 目的:提供环形振荡器和使用该环形振荡器的多相时钟校正电路,以通过产生CML电平的时钟信号来高速降低功耗。 构成:在一个器件中,环形振荡器产生预期不同电平的CML电平的第四四个时钟信号。 环形振荡器包括第一和第二缓冲单元(210,230),并且每个第一和第二缓冲器具有交叉耦合结构。 第一和第二缓冲器根据具有预期电压电平的偏置电压产生第一至第四时钟信号。 第一缓冲器缓冲对应于第二缓冲器的输出信号的第二和第四时钟信号,并产生第一和第三时钟信号。
    • 8. 发明授权
    • 발진기
    • 振荡器
    • KR100719987B1
    • 2007-05-21
    • KR1020060011563
    • 2006-02-07
    • 산요덴키가부시키가이샤
    • 우찌야마히사요시와까이후또시
    • H03L7/00
    • H03L7/0998H03K3/0322H03K5/13H03K2005/00052H03L7/0995H03L7/10
    • 차동 증폭 회로를 이용한 발진 주파수 제어를 행하는 전류 제어형 발진기에 있어서, 차동 증폭 회로의 출력 특성의 직선 영역의 기울기나 폭에 기인하여, 위상 잡음 특성의 열화나 발진 주파수 제어의 데드로크가 생길 수 있다. 본 발명은, 발진 주파수 제어 회로를 구성하는 차동 증폭 회로의 차동쌍의 각 전류 경로에 저항을 삽입하고, 차동쌍의 출력 전류 Ia, Ib의 직선 영역에서의 기울기를 완만하게 한다. 또한 그 차동쌍의 한쪽의 트랜지스터의 베이스에 인가하는 기준 전압을 낮게 설정함으로써, 직선 영역을 저전압측으로 시프트시켜서, 저전압측의 포화 영역이 발생하지 않도록 한다. 또한, 전류 제어형 발진 회로의 출력 신호와 기준 신호와의 위상의 비교 결과를 발진 주파수 제어 전압 Vtune으로 변환할 때에, 회로 공통의 정전압 전원 Vcc 대신에 레귤레이터의 출력에 의해 Vtune의 상한 전압을 제한함으로써, 직선 영역보다 상측의 포화 영역으로 Vtune이 이동하지 않도록 한다.
      전류 제어형 발진 회로, LPF, PLL, 크로스 커플 차동쌍, 레귤레이터
    • 10. 发明公开
    • 자가 조절형 전압 제어 발진기
    • 自控式电压控制振荡器
    • KR1020030092151A
    • 2003-12-06
    • KR1020020029340
    • 2002-05-27
    • 인티그런트 테크놀로지즈(주)
    • 황인철강성모김보은
    • H03L7/099
    • H03K3/011H03K3/0322
    • PURPOSE: A self control type voltage controlled oscillator is provided, which has an improved noise characteristics of a power supply voltage. CONSTITUTION: The first and the second transistor(MP1,MP2) includes the first(1101,1201) and the second(1102,1202) and the third ports(1103,1203), and the amount of a current flowing to the second port from the first port in proportional to a voltage applied to the third port, and the amount of the current increases as the voltage inputted to the third port decreases to a negative value. And the first ports are connected to a power supply. The first and the second transmission gate(MT1,MT2) include input ports(1301,1401) and the first control ports(1303,1403) and the second control ports(1304,1404) and output ports(1302,1402) connected to the second port of the first and the second transistor respectively. The second control port of one of the transmission gates is connected to the input port of another transmission gate. And a latch(ML) includes the first and the second output port(1501,1601) and the first and the second input port(1502,1602) connected to the output port of the first and the second transmission gate respectively.
    • 目的:提供自控型压控振荡器,具有改善电源电压的噪声特性。 构成:第一和第二晶体管(MP1,MP2)包括第一(1101,1201)和第二晶体管(1102,1202)和第三端口(1103,1203),以及流向第二端口的电流量 与第一端口成比例地施加到第三端口的电压,并且随着输入到第三端口的电压降低到负值,电流量增加。 并且第一个端口连接到电源。 第一和第二传输门(MT1,MT2)包括输入端口(1301,1401)和第一控制端口(1303,1403)和第二控制端口(1304,1404)和输出端口(1302,1402)连接到 分别是第一和第二晶体管的第二端口。 一个传输门的第二控制端口连接到另一个传输门的输入端口。 并且锁存器(ML)包括分别连接到第一和第二传输门的输出端口的第一和第二输出端口(1501,1601)以及第一和第二输入端口(1502,1602)。