公开(公告)号：US5592129A

公开(公告)日：1997-01-07

申请号：US494575

申请日：1995-06-22

Applicant: Rafael Fried ,  Eyal Rozin

Inventor： Rafael Fried ,  Eyal Rozin

IPC: H03B1/00 ,  H03K3/0231 ,  H03L7/181 ,  H03B5/24 ,  H03L7/18

CPC classification number: H03K3/0231 ,  H03L7/181 ,  H03B2201/0275

Abstract: A frequency multiplier circuit generates an supplemental high-frequency timing signal from a single, low-frequency current-controlled oscillator (CCO). The current-controlled oscillator (CCO) generates a controlled discharge current and a controlled bias current which are controlled in parallel to substantially eliminate inaccuracies in a characteristic frequency-current curve of the current-controlled oscillator. The frequency multiplier circuit generates a high-frequency timing signal using the digitally-controlled CCO and avoids the usage of a phase-locked loop (PLL) technique. Specifically, a frequency multiplier includes a current-controlled oscillator having a plurality of input lines connected to receive a digital current select signal and having an output terminal connected to carry a timing signal at a current-controlled oscillator frequency f.sub.CCO set in accordance with the current select signal. The frequency multiplier further includes a control circuit having a first timing input terminal connected to the current-controlled oscillator output terminal to receive the current-controlled oscillator frequency f.sub.CCO, output lines connected to the current-controlled oscillator digital current select input lines, a second timing input terminal connected to receive a timing signal at a reference frequency f.sub.REF, and a plurality of input lines connected to receive a programmable frequency multiplication factor.

Abstract translation: 倍频器电路从单个低频电流控制振荡器（CCO）产生补充的高频定时信号。 电流控制振荡器（CCO）产生受控的放电电流和受控的偏置电流，其被并联控制，以基本上消除电流控制振荡器的特征频率 - 电流曲线中的不准确性。 倍频电路使用数字控制的CCO产生高频定时信号，避免使用锁相环（PLL）技术。 具体地，倍频器包括电流控制振荡器，其具有连接的多个输入线，用于接收数字电流选择信号，并且具有连接的输出端子以根据电流设置的电流控制振荡器频率fCCO来传送定时信号 选择信号。 所述倍频器还包括控制电路，所述控制电路具有连接到所述电流控制振荡器输出端子的第一定时输入端子，以接收所述电流控制振荡器频率fCCO，连接到所述电流控制振荡器数字电流选择输入线路的输出线路， 定时输入端子被连接以接收基准频率fREF的定时信号，以及连接以接收可编程倍频因子的多个输入线。

公开(公告)号：WO1996016472A1

公开(公告)日：1996-05-30

申请号：PCT/US1995015186

申请日：1995-11-20

Applicant: ANADIGICS, INC.

Inventor： ANADIGICS, INC. ,  BAYRUNS, John, T. ,  WAUGH, Raymond, M. ,  WALLACE, Phillip, W. ,  BAYRUNS, Robert, J. ,  DENIGRIS, Thomas, D.

IPC: H03B05/18

CPC classification number: H03J5/24 ,  H03B5/1876 ,  H03B25/00 ,  H03B2201/0275 ,  H04B1/28

Abstract: A multiple-frequency local oscillator (200) for providing an LO signal at one of a multiple of predetermined resonant frequencies associated with a number of resonators (210). It includes a number of LO input ports (205) for coupling to the plurality of resonators (210). The local oscillator is controlled to selectively provide at its LO output port (215) an output LO signal at any one of the resonant frequencies.

Abstract translation: 一种用于以与多个谐振器（210）相关联的多个预定谐振频率中的一个提供LO信号的多频本地振荡器（200）。 它包括用于耦合到多个谐振器（210）的多个LO输入端口（205）。 控制本地振荡器以在其LO输出端口（215）选择性地在任何谐振频率处提供输出LO信号。

公开(公告)号：WO2004010571A1

公开(公告)日：2004-01-29

申请号：PCT/US2003/022596

申请日：2003-07-18

Applicant: QUALCOMM, INCORPORATED

Inventor： WALLACE, Raymond, C.

IPC: H03B5/08

CPC classification number: H03B5/1206 ,  H03B5/1243 ,  H03B2201/0208 ,  H03B2201/0275 ,  H03J3/185 ,  H03J2200/38 ,  H03L2207/06

Abstract: A wideband Voltage Controlled Oscillator (VCO) uses a resonant circuit tunable over a wide range of resonant frequencies. The resonant circuit includes voltage variable elements such that the resonant frequency, and thus the frequency of oscillation, may be electronically tuned. The voltage variable elements are arranged such that multiple control voltages determine the resonant frequency. A first control voltage is applied to a first set of tuning elements and operates as a coarse control of the resonant frequency. A second control voltage is applied to a second set of tuning elements and operates as a fine control of the resonant frequency. Using multiple control voltages on multiple elements allows for a wideband VCO while maintaining a low VCO gain.

Abstract translation: 宽带压控振荡器（VCO）使用可在宽范围的谐振频率下调谐的谐振电路。 谐振电路包括电压可​​变元件，使得谐振频率以及因此的振荡频率可以被电子调谐。 电压可变元件被布置成使得多个控制电压确定谐振频率。 第一控制电压被施加到第一组调谐元件，并且作为谐振频率的粗略控制来操作。 第二控制电压被施加到第二组调谐元件并且作为谐振频率的精细控制而工作。 在多个元件上使用多个控制电压允许宽带VCO同时保持低VCO增益。

公开(公告)号：US20190044478A1

公开(公告)日：2019-02-07

申请号：US15668858

申请日：2017-08-04

Applicant: Dialog Semiconductor (UK) Limited

Inventor： Daisuke Kobayashi ,  Julian Tyrrell

IPC: H03B5/02 ,  H03K4/502 ,  H03B1/02

CPC classification number: H03B5/02 ,  H03B1/02 ,  H03B2200/005 ,  H03B2200/0062 ,  H03B2200/0082 ,  H03B2201/0275 ,  H03K3/0231 ,  H03K3/354 ,  H03K4/502

Abstract: Relax oscillation circuits have at least one comparison circuit that is structured with a flipped gate transistor and a normal MOS transistor wherein the two transistors having different threshold voltages. The relaxation oscillators are configured for charging and discharging capacitances between the threshold voltages of the flipped gate transistor and the normal MOS transistor by toggling the state of a latching circuit to control the charging and discharging of the capacitances.

公开(公告)号：US20180337635A1

公开(公告)日：2018-11-22

申请号：US15635635

申请日：2017-06-28

Applicant: Beken Corporation

Inventor： Jiazhou Liu ,  Yunfeng Zhao ,  Dawei Guo

IPC: H03B5/30

CPC classification number: H03B5/30 ,  H03B5/32 ,  H03B2200/0008 ,  H03B2200/0012 ,  H03B2200/005 ,  H03B2200/0074 ,  H03B2200/008 ,  H03B2201/0275

Abstract: A method and a circuit for exciting a crystal oscillation circuit are disclosed herein. The crystal oscillation circuit comprising: charging, with a charging circuit, a voltage-controlled oscillator; providing, with the voltage-controlled oscillator, an exciting signal; blocking, with a direct current blocking capacitor, direct current from the voltage-controlled oscillator to the crystal oscillation circuit; and exciting, with the exciting signal, the crystal oscillation circuit. The circuit for exciting a crystal oscillation circuit, comprising: a charging circuit; a voltage-controlled oscillator coupled to the charging circuit and configured to provide an exciting signal to the crystal oscillation circuit; and a direct current blocking capacitor connected between the voltage-controlled oscillator and the crystal oscillation circuit and configured to block direct current from the voltage-controlled oscillator.

公开(公告)号：US09960734B2

公开(公告)日：2018-05-01

申请号：US14522534

申请日：2014-10-23

Applicant: The Trustees Of Columbia University In The City Of New York

Inventor： Changyao Chen ,  James Hone ,  Sunwoo Lee

IPC: H03B5/32 ,  H03B5/30 ,  H01L21/02 ,  H03H3/02 ,  H03H9/17 ,  H01L29/84 ,  H01L29/06 ,  H01L29/165 ,  H03H9/02 ,  H01L29/00 ,  G01J5/04 ,  G01J5/44 ,  H01L41/18

CPC classification number: H03B5/30 ,  G01J5/046 ,  G01J5/44 ,  H01L21/0262 ,  H01L29/00 ,  H01L29/0673 ,  H01L29/165 ,  H01L29/84 ,  H01L41/18 ,  H03B2200/0022 ,  H03B2200/0048 ,  H03B2201/0266 ,  H03B2201/0275 ,  H03H3/02 ,  H03H9/02244 ,  H03H9/02433 ,  H03H9/17

Abstract: A nano-electro-mechanical systems (NEMS) oscillator can include an insulating substrate, a source electrode and a drain electrode, a metal local gate electrode, and a micron-sized, atomically thin graphene resonator. The source electrode and drain electrode can be disposed on the insulating substrate. The metal local gate electrode can be disposed on the insulating substrate. The graphene resonator can be suspended over the metal local gate electrode and define a vacuum gap between the graphene resonator and the metal local gate electrode.

公开(公告)号：US20170025998A1

公开(公告)日：2017-01-26

申请号：US14522534

申请日：2014-10-23

Applicant: The Trustees Of Columbia University In The City Of New York

Inventor： Changyao Chen ,  James Hone ,  Sunwoo Lee

IPC: H03B5/30

CPC classification number: H03B5/30 ,  G01J5/046 ,  G01J5/44 ,  H01L21/0262 ,  H01L29/00 ,  H01L29/0673 ,  H01L29/165 ,  H01L29/84 ,  H01L41/18 ,  H03B2200/0022 ,  H03B2200/0048 ,  H03B2201/0266 ,  H03B2201/0275 ,  H03H3/02 ,  H03H9/02244 ,  H03H9/02433 ,  H03H9/17

Abstract: A nano-electro-mechanical systems (NEMS) oscillator can include an insulating substrate, a source electrode and a drain electrode, a metal local gate electrode, and a micron-sized, atomically thin graphene resonator. The source electrode and drain electrode can be disposed on the insulating substrate. The metal local gate electrode can be disposed on the insulating substrate. The graphene resonator can be suspended over the metal local gate electrode and define a vacuum gap between the graphene resonator and the metal local gate electrode.

Abstract translation: 纳米机电系统（NEMS）振荡器可以包括绝缘衬底，源电极和漏电极，金属局部栅电极和微米级的原子薄的石墨烯谐振器。 源电极和漏极可以设置在绝缘基板上。 金属本地栅电极可以设置在绝缘基板上。 石墨烯谐振器可以悬挂在金属局部栅电极上，并且在石墨烯谐振器和金属局部栅电极之间限定真空间隙。

公开(公告)号：US06674333B1

公开(公告)日：2004-01-06

申请号：US10271828

申请日：2002-10-15

Applicant: David S. Peckham ,  Arul M. Balasubramaniyan

Inventor： David S. Peckham ,  Arul M. Balasubramaniyan

IPC: H03B500

CPC classification number: H03J5/244 ,  H03B2201/0208 ,  H03B2201/0275

Abstract: Systems and methods are described for a band switchable voltage controlled oscillator. A method comprises: operating said voltage controlled oscillator in a first frequency band by switching a first capacitive circuit having a capacitance that varies with a tuning voltage; and operating said voltage controlled oscillator in a second frequency band by switching a second capacitive circuit having a capacitance that does not vary with the tuning voltage. An apparatus comprises: a switchable variable capacitance circuit; a switchable fixed capacitance circuit coupled to the switchable variable capacitance circuit; a controller for selectively switching said switchable fixed and variable capacitance circuits; a fixed tank capacitance circuit coupled to the switchable fixed capacitance circuit; a main tuning voltage variable capacitance circuit coupled to the fixed tank capacitance circuit; a tank inductance coupled to the main tuning voltage variable capacitance circuit; and an amplifier circuit coupled to the tank inductance.

Abstract translation: 对带式可切换压控振荡器描述了系统和方法。 一种方法包括：通过切换具有随调谐电压而变化的电容的第一电容电路来操作第一频带中的所述压控振荡器; 以及通过切换具有不随所述调谐电压而变化的电容的第二电容电路，在所述第二频带中操作所述压控振荡器。 一种装置包括：可切换可变电容电路; 耦合到所述可切换可变电容电路的可切换固定电容电路; 用于选择性地切换所述可切换固定和可变电容电路的控制器; 耦合到可切换固定电容电路的固定电容电容电路; 主调谐电压可变电容电路耦合到固定槽电容电路; 耦合到主调谐电压可变电容电路的谐振电感; 以及耦合到箱体电感的放大器电路。

公开(公告)号：US5418497A

公开(公告)日：1995-05-23

申请号：US270624

申请日：1994-07-05

Applicant: Frederick L. Martin

Inventor： Frederick L. Martin

IPC: H03B1/00 ,  H03B5/12

CPC classification number: H03B5/1231 ,  H03B5/1209 ,  H03B5/1225 ,  H03B5/1243 ,  H03B5/1296 ,  H03B2200/0062 ,  H03B2201/02 ,  H03B2201/0275

Abstract: BiCMOS technology is used in the design of a VCO (200) to improve low DC operation. The VCO (200) includes two coupled oscillator circuits (201,219) tuned to different fixed frequencies such that the oscillator resonant frequencies define the tuning range of the VCO (200). The oscillator circuits (201, 219) are coupled such that the frequency of oscillation of the VCO (200) is adjustable via variable resistors (206, 214) by manipulating the bias currents to the two oscillator circuits (201,219). A biasing circuit (208) along with variable resistors (206 and 214) provide the DC bias to the oscillator circuits (201 and 219). The biasing circuit (208) maintains the sum of the biasing currents to the oscillator circuits constant. The oscillator circuits (201, and 219) are interconnected utilizing an RF coupling circuit (211). The VCO (200) is capable of operating at voltages as low as 1.8 volts DC.

Abstract translation: BiCMOS技术用于VCO（200）的设计，以改善低直流操作。 VCO（200）包括调谐到不同固定频率的两个耦合振荡器电路（201,219），使得振荡器谐振频率定义VCO（200）的调谐范围。 振荡器电路（201,219）被耦合，使得VCO（200）的振荡频率可通过可变电阻器（206,214）调节到两个振荡器电路（201,219）的偏置电流来调节。 偏置电路（208）连同可变电阻器（206和214）将DC偏压提供给振荡器电路（201和219）。 偏置电路（208）将偏置电流的和保持恒定。 振荡器电路（201和219）利用RF耦合电路（211）互连。 VCO（200）能够在低至1.8伏DC的电压下工作。

公开(公告)号：KR1020090016093A

公开(公告)日：2009-02-13

申请号：KR1020070080491

申请日：2007-08-10

Applicant: 삼성전자주식회사

Inventor： 이광

IPC: H03B5/08

CPC classification number: H03B5/24 ,  H03B2200/009 ,  H03B2201/0275 ,  H03L7/099

Abstract: A broadband variable voltage control oscillator and a method thereof are provided to prevent performance degradation due to a phase noise by simplifying a resonator structure of a voltage control oscillation part. A voltage mapping part(603) receives a digital control bit and an analog control signal, and outputs an analog control voltage. The digital control bit is used for a variable frequency. The analog control signal is used for minute frequency tuning. A voltage control oscillation part(604) outputs a frequency corresponding to the analog control voltage. The voltage mapping part has a structure of a resistor ladder digital-analog converter.

Abstract translation: 提供一种宽带可变电压控制振荡器及其方法，通过简化电压控制振荡部分的谐振器结构来防止由相位噪声引起的性能下降。 电压映射部（603）接收数字控制位和模拟控制信号，并输出模拟控制电压。 数字控制位用于可变频率。 模拟控制信号用于微调频率。 电压控制振荡部（604）输出与模拟控制电压对应的频率。 电压映射部分具有电阻梯形数模转换器的结构。