中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

15 records (took 0.028 seconds)

    Programmable sinusoidal oscillator circuit
    1.
    发明授权
    Programmable sinusoidal oscillator circuit 有权
    可编程正弦振荡电路

    公开(公告)号：US08854148B1

    公开(公告)日：2014-10-07

    申请号：US14095999

    申请日：2013-12-03

    Applicant: King Fahd University of Petroleum and Minerals

    Inventor： Muhammad Taher Abuelma'atti

    IPC: H03B5/24 ,  H03B5/26

    CPC classification number: H03B5/24 ,  H03B5/26 ,  H03B2200/0046 ,  H03B2200/0058 ,  H03B2201/0275

    Abstract: A programmable sinusoidal oscillator circuit is a sinusoidal oscillator circuit that includes a current-feedback operational-amplifier (CFOA) operably connected to two operational transconductance amplifiers (OTAs), two capacitors and a resistor. The programmable sinusoidal oscillator circuit enjoys electronic orthogonal tuning of the frequency and the condition of oscillation by adjusting the biasing currents (voltages) of the OTAs, as well as providing a low output impedance.

    Abstract translation: 可编程正弦振荡器电路是包括可操作地连接到两个运算跨导放大器（OTAs），两个电容器和电阻器的电流反馈运算放大器（CFOA）的正弦振荡器电路。 可编程正弦振荡电路通过调整OTA的偏置电流（电压）以及提供低输出阻抗，可以对频率和振荡条件进行电子正交调谐。

    Voltage-controlled oscillator including current control element
    2.
    发明授权
    Voltage-controlled oscillator including current control element 失效
    压控振荡器包括电流控制元件

    公开(公告)号：US06271730B1

    公开(公告)日：2001-08-07

    申请号：US09139013

    申请日：1998-08-24

    Applicant: Hiroyuki Abe ,  Yasuyuki Shindoh ,  Hirofumi Watanabe

    Inventor： Hiroyuki Abe ,  Yasuyuki Shindoh ,  Hirofumi Watanabe

    IPC: H03B100

    CPC classification number: H03K3/0231 ,  H03B2201/0275 ,  H03K3/03 ,  H03K3/0322 ,  H03L7/0995 ,  H03L7/18 ,  H03L2207/06

    Abstract: An odd number of inverter circuits are connected with each other so as to form a ring. A first current-control element is provided between an oscillation signal line which is used for connecting adjacent inverter circuits and a power-source-potential point, a current flowing through the first current-control element varying by a first control signal. A second current-control element is provided between the oscillation signal line and a ground point, a current flowing through the second current-control element varying by a second control signal.

    Abstract translation: 奇数个逆变器电路相互连接形成一个环。 第一电流控制元件设置在用于连接相邻逆变器电路的振荡信号线和电源电位点之间，流过第一电流控制元件的电流由第一控制信号变化。 第二电流控制元件设置在振荡信号线与接地点之间，流过第二电流控制元件的电流由第二控制信号变化。

    Wideband VCO resonant circuit method and apparatus
    4.
    发明授权
    Wideband VCO resonant circuit method and apparatus 失效

    公开(公告)号：US06801097B2

    公开(公告)日：2004-10-05

    申请号：US10199898

    申请日：2002-07-18

    Applicant: Raymond C. Wallace

    Inventor： Raymond C. Wallace

    IPC: H03B508

    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.

    Oscillator having two cascaded gain stages with feedback operating near their unity gain frequency
    6.
    发明授权
    Oscillator having two cascaded gain stages with feedback operating near their unity gain frequency 失效
    振荡器具有两个级联增益级，反馈工作在其单位增益频率附近

    公开(公告)号：US5712599A

    公开(公告)日：1998-01-27

    申请号：US665954

    申请日：1996-06-19

    Applicant: Leonard L. Kleinberg

    Inventor： Leonard L. Kleinberg

    IPC: H03B1/00 ,  H03B5/24 ,  H03B5/12

    CPC classification number: H03B5/24 ,  H03B2201/0275

    Abstract: An oscillating signal generator for generating an oscillating signal having a variable oscillation frequency that can be near the unity gain frequency of the gain devices within the oscillating signal generator (Generation of High-Frequency Oscillating Signal Techniques, "GHOST"). Two gain stages, each with a respective effective resistance R.sub.eff, an emitter load capacitance C.sub.E, and a respective gain device having a unity gain frequency .omega..sub.T, are cascaded and configured to provide a respective gain with a phase at substantially 180.degree.. In that case, the oscillation frequency, of the oscillating signal generated by the oscillating signal generator of the present invention, .omega.=�.omega..sub.T /(R.sub.eff C.sub.E)!.sup.1/2. A feedback with a feedback gain is provided between the output to the input of the cascade of the two gain stages. The feedback gain is designed such that a product of the feedback gain and the gain through the cascade of the two gain stages is substantially one. The oscillation frequency of the oscillating signal generated by the oscillator can be varied by a corresponding variation to .omega..sub.T and/or R.sub.eff. Alternatively, the oscillation frequency can be substantially fixed at a predetermined resonance frequency determined by a frequency determining network operatively connected to the cascade of the two gain stages. The oscillating signal generator of the present invention which can generate sine waves can be implemented with circuit elements that are easily fabricated on-chip within a monolithic integrated circuit. In addition, because oscillation frequencies near the unity gain frequency of the gain devices can be achieved, higher frequencies for a given power dissipation or lower power dissipation for a given frequency can be obtained.

    Abstract translation: 振荡信号发生器，用于产生具有可接近于振荡信号发生器内的增益器件的单位增益频率的可变振荡频率的振荡信号（产生高频振荡信号技术，“GHOST”）。 具有相应有效电阻Reff，发射极负载电容CE和具有单位增益频率ωT的相应增益器件的两个增益级被级联和配置以提供具有大致180度的相位的相应增益。 在这种情况下，由本发明的振荡信号发生器产生的振荡信号的振荡频率为ω= [ω/（ReffCE）] + E，fra 1/2 + EE。 具有反馈增益的反馈在两个增益级的级联输入之间提供。 反馈增益被设计成使得通过两个增益级的级联的反馈增益和增益的乘积基本上是一个。 由振荡器产生的振荡信号的振荡频率可以通过与ωT和/或Reff的相应变化来改变。 或者，振荡频率可以基本上固定在由可操作地连接到两个增益级的级联的频率确定网络确定的预定谐振频率上。 可产生正弦波的本发明的振荡信号发生器可以利用在单片集成电路内易于制造在片上的电路元件来实现。 此外，由于可以实现增益器件的单位增益频率附近的振荡频率，因此可以获得给定功率的较高频率或给定频率的较低功耗。

    Wideband VCO resonant circuit method and apparatus
    8.
    发明申请
    Wideband VCO resonant circuit method and apparatus 失效
    宽带VCO谐振电路的方法和装置

    公开(公告)号：US20040012454A1

    公开(公告)日：2004-01-22

    申请号：US10199898

    申请日：2002-07-18

    Inventor： Raymond C. Wallace

    IPC: H03B001/00

    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来操作。 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。

    High resolution, large multiplication factor digitally-controlled frequency multiplier
    9.
    发明授权
    High resolution, large multiplication factor digitally-controlled frequency multiplier 失效
    高分辨率，大倍数数字控制倍频器

    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。

Patent Agency Ranking