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    A HIGH-SPEED/HIGH-SLEW-RATE TRI-MODAL ALL BIPOLAR BUFFER/SWITCH AND METHOD THEREOF
    3.
    发明申请
    A HIGH-SPEED/HIGH-SLEW-RATE TRI-MODAL ALL BIPOLAR BUFFER/SWITCH AND METHOD THEREOF 审中-公开
    高速/高速三态三模式所有双极性缓冲器/开关及其方法

    公开(公告)号：WO1997014216A1

    公开(公告)日：1997-04-17

    申请号：PCT/IB1996001024

    申请日：1996-09-30

    Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

    Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  TABATABEI, Ali ,  FOTOWAT-AHMADY, Ali ,  NAVID, Nasrollah, S.

    IPC: H03K17/60

    CPC classification number: H03K17/04213 ,  H03K17/06

    Abstract: A high-speed/high-slew-rate tri-modal all bipolar buffer/switch includes a unity-gain amplifier (20), a voltage source (70), and a maximum level detector (30) and a minimum level detector (40) adjusting a current source (60) to sink or source current as required to quickly make the output voltage of the switch equal to the input voltage of the switch. The maximum level detector (30) and the minimum level detector (40) compare the output voltage to the input voltage. If the output voltage does not equal the input voltage, the current source acts (60) as either a sink or source to make the output voltage equal the input voltage. In addition, the voltage switch holds a constant d.c. voltage at the output of the switch when the switch is powered down.

    Abstract translation: 高速/高压摆率三态全双极型缓冲器/开关包括单位增益放大器（20），电压源（70）和最大电平检测器（30）和最小电平检测器（40） ）根据需要调节电流源（60）以吸收或源电流以快速使开关的输出电压等于开关的输入电压。 最大电平检测器（30）和最小电平检测器（40）将输出电压与输入电压进行比较。 如果输出电压不等于输入电压，则电流源（60）作为接收器或源极使输出电压等于输入电压。 此外，电压开关保持恒定的直流电压。 当开关断电时，开关输出端的电压。

    A PRESCALAR CIRCUIT
    4.
    发明申请
    A PRESCALAR CIRCUIT 审中-公开
    PRESCALAR电路

    公开(公告)号：WO1997014210A1

    公开(公告)日：1997-04-17

    申请号：PCT/IB1996001039

    申请日：1996-10-03

    Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

    Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  BEHBAHANI, Farbod ,  FOTOWAT-AHMADY, Ali ,  NAVID, Nasrollah, S.

    IPC: H03B27/00

    CPC classification number: H03B27/00 ,  H03B19/14 ,  H03K5/1515

    Abstract: Self-oscillation of a prescalar circuit is avoided by including offset generators on the inputs of the prescalar circuit. This ensures that when the transistors in one differential pair in the prescalar circuit transition from ON to OFF, the other differential pair if transistors will not transition. As a result, spikes are prevented in the differential pair that does not have a transition. A quadrature signal generator constructed with such a prescalar circuit provides an accurate output despite weak or non-existent input signals.

    Abstract translation: 通过在预分频电路的输入上包括偏移发生器来避免预分频电路的自振荡。 这确保了当预分频电路中的一个差分对中的晶体管从导通切换到OFF时，如果晶体管不会转换，则另一个差分对。 结果，在不具有转换的差分对中防止尖峰。 使用这种预分频电路构造的正交信号发生器尽管存在弱或不存在的输入信号，但提供精确的输出。

    COMPARATOR WITH SMOOTH START-UP FOR HIGH FREQUENCIES
    5.
    发明申请
    COMPARATOR WITH SMOOTH START-UP FOR HIGH FREQUENCIES 审中-公开
    具有用于高频率的平滑启动的比较器

    公开(公告)号：WO1997014215A2

    公开(公告)日：1997-04-17

    申请号：PCT/IB1996001040

    申请日：1996-10-03

    Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

    Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  BEHBAHANI, Farbod ,  FOTOWAT-AHMADY, Ali ,  NAVID, Nasrollah, S.

    IPC: H03K05/22

    CPC classification number: H03K5/2445 ,  H03K5/2418

    Abstract: A comparator has a simple high frequency signal path from input to output formed by two differentially connected transistors (Q1, Q2) with an output transistor (Q8, Q3) connected to each. A current control circuit maintains a constant total current flowing through the differentially connected transistors (Q1, Q2). The ratio of currents flowing through the differentially connected transistors (Q1, Q2) is initially set by a control circuit (I1, I2), so that the output of the comparator is predictable when powered up. The control circuit then gradually releases control, so that there is a smooth transfer to control by a reference signal input to the comparator.

    Abstract translation: 比较器具有从由两个差分连接的晶体管（Q1，Q2）形成的从输入到输出的简单的高频信号路径，其中每个连接有输出晶体管（Q8，Q3）。 电流控制电路保持流过差分连接的晶体管（Q1，Q2）的恒定总电流。 流过差分连接的晶体管（Q1，Q2）的电流的比率最初由控制电路（I1，I2）设置，使得比较器的输出在加电时是可预测的。 然后，控制电路逐渐释放控制，使得通过输入到比较器的参考信号进行平滑传输到控制。

    QUADRATURE MODULATOR AND CALIBRATION METHOD
    7.
    发明申请
    QUADRATURE MODULATOR AND CALIBRATION METHOD 审中-公开
    校正调制器和校准方法

    公开(公告)号：WO2004095686A2

    公开(公告)日：2004-11-04

    申请号：PCT/IB2004/001191

    申请日：2004-04-20

    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PARSA, Ali ,  FOTOWAT-AHMADY, Ali ,  FAGHFURI, Ali ,  JENABI, Mahta ,  RIOU, Emmanuel ,  HAHN, Steffen

    Inventor： PARSA, Ali ,  FOTOWAT-AHMADY, Ali ,  FAGHFURI, Ali ,  JENABI, Mahta ,  RIOU, Emmanuel ,  HAHN, Steffen

    IPC: H03C3/40

    CPC classification number: H04L27/364 ,  H03C3/406

    Abstract: A quadrature modulator and a method of calibrating same by applying a first test tone signal to an in-phase modulation branch input of the modulator and a ninety degree phase-shifted version of the first test tone signal to a quadrature modulation branch input of the modulator. The carrier leakage level in an output signal of the modulator is measured and in response base band dc offset voltages are adjusted to minimize the carrier leakage. A second test tone signal is applied to the in-phase modulation branch input and a ninety degree phase-shifted version of the second test tone signal to the quadrature modulation branch input. The level of an undesired upper sideband frequency component in the output signal is measured and in response base band gains the in-phase and quadrature modulation branches and a local oscillator phase error are adjusted to minimize the undesired sideband.

    Abstract translation: 正交调制器和通过将第一测试音信号施加到调制器的同相调制分支输入并将第一测试音调信号的九十度相移版本应用于调制器的正交调制分支输入的校准方法 。 测量调制器的输出信号中的载波泄漏电平，并根据基带调整直流偏移电压以最小化载波泄漏。 将第二测试音信号施加到同相调制分支输入和第二测试音调信号的九十度相移版本到正交调制分支输入。 测量输出信号中不期望的上边带频率分量的电平，并且响应于基带增益同相和正交调制分支，并且调整本地振荡器相位误差以最小化不期望的边带。

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