CASCADED PHASE PULSE POSITION AND PULSE WIDTH MODULATION BASED DIGITAL TRANSMITTER
    23.
    发明申请
    CASCADED PHASE PULSE POSITION AND PULSE WIDTH MODULATION BASED DIGITAL TRANSMITTER 有权
    基于脉冲位置和脉冲宽度调制的数字信号发生器

    公开(公告)号:US20090041108A1

    公开(公告)日:2009-02-12

    申请号:US11837043

    申请日:2007-08-10

    IPC分类号: H03K7/10

    CPC分类号: H04L25/4902

    摘要: Briefly, in accordance with one or more embodiments, a digital transmitter may comprise two or more phase modulators in a cascaded arrangement. The phase modulators may modulate a local oscillator signal using control signals derived from the quadrature baseband data to be transmitted. A closed loop power control feedback arrangement may be used to compare the output power of the transmitter with a desired output signal, and make corrections to the output signal by modifying at least one of the control signals provided to the cascaded phase modulators.

    摘要翻译: 简而言之,根据一个或多个实施例,数字发射机可以包括两个或更多个级联布置的相位调制器。 相位调制器可以使用从要发送的正交基带数据导出的控制信号来调制本地振荡器信号。 可以使用闭环功率控制反馈装置来将发射机的输出功率与期望的输出信号进行比较,并且通过修改提供给级联相位调制器的控制信号中的至少一个来对输出信号进行校正。

    SUBRANGING FOR A PULSE POSITION AND PULSE WIDTH MODULATION BASED TRANSMITTER
    24.
    发明申请
    SUBRANGING FOR A PULSE POSITION AND PULSE WIDTH MODULATION BASED TRANSMITTER 有权
    用于脉冲位置和脉冲宽度调制的发射机的SUBRANGING

    公开(公告)号:US20090034603A1

    公开(公告)日:2009-02-05

    申请号:US12176646

    申请日:2008-07-21

    IPC分类号: H03K7/08

    摘要: Briefly, in accordance with one or more embodiments, in a pulse position and pulse position modulation out-phasing transmitter, the range of the phase angle, theta, may be divided into more than one range to drive a first power amplifier with a first range of theta, and to drive a second power amplifier with a second range of theta. In one or more embodiments, a main power amplifier is driven with a first phase range having a higher probability density function, and an overload power amplifier is driven with a first phase range having a lower probability density function. In one or more embodiments, a full adder may be used to combine the two phases wherein the sum signal is used to drive the main power amplifier, and the carry signal is used to drive the overload power amplifier.

    摘要翻译: 简而言之,根据一个或多个实施例,在脉冲位置和脉冲位置调制输出相位变送器中,相位角θ的范围可被划分成多于一个范围以驱动具有第一范围的第一功率放大器 的θ,并驱动具有θ的第二范围的第二功率放大器。 在一个或多个实施例中,主功率放大器由具有较高概率密度函数的第一相位范围驱动,而过载功率放大器由具有较低概率密度函数的第一相位范围驱动。 在一个或多个实施例中,全加器可以用于组合两相,其中求和信号用于驱动主功率放大器,并且进位信号用于驱动过载功率放大器。

    Resistor-based Σ-ΔDAC
    26.
    发明授权
    Resistor-based Σ-ΔDAC 有权
    基于电阻和电阻的DAC

    公开(公告)号:US08941520B2

    公开(公告)日:2015-01-27

    申请号:US13995156

    申请日:2011-09-30

    摘要: An inverter-driven resistor-ladder digital-to-analog (DAC) converter includes a resistor-ladder network that comprises a resistor for each bit signal of a multi-bit input signal. Each resistor of the resistor-ladder network comprises an input end and an output end. The input end of each resistor is coupled to a corresponding bit signal of the multi-bit input signal, and the output end of each resistor is coupled to an output node of the resistor-ladder network. An output voltage is generated at the output node that is based on the multi-bit input signal. In one exemplary embodiment, the multi-bit input signal is a sigma-delta (ΣΔ) modulated multi-bit input signal. In another exemplary embodiment, resistance values of the resistors of the resistor-ladder network are related by a binary weighting. In still another exemplary embodiment, resistance values of the resistors of the resistor-ladder network are substantially equal.

    摘要翻译: 逆变器驱动的电阻梯形数模(DAC)转换器包括一个电阻梯形网络,包括一个多位输入信号的每个位信号的电阻。 电阻梯形网络的每个电阻器包括输入端和输出端。 每个电阻器的输入端耦合到多位输入信号的对应位信号,并且每个电阻器的输出端耦合到电阻梯形网络的输出节点。 在输出节点处产生基于多位输入信号的输出电压。 在一个示例性实施例中,多比特输入信号是Σ-Δ(&Sgr& Dgr)调制的多位输入信号。 在另一示例性实施例中,电阻梯形网络的电阻器的电阻值通过二进制加权相关。 在又一示例性实施例中,电阻梯形网络的电阻器的电阻值基本相等。

    Subranging for a pulse position and pulse width modulation based transmitter
    28.
    发明授权
    Subranging for a pulse position and pulse width modulation based transmitter 有权
    基于脉冲位置和基于脉宽调制的发射机的分组

    公开(公告)号:US08098726B2

    公开(公告)日:2012-01-17

    申请号:US12176646

    申请日:2008-07-21

    IPC分类号: H03K7/08

    摘要: Briefly, in accordance with one or more embodiments, in a pulse position and pulse position modulation out-phasing transmitter, the range of the phase angle, theta, may be divided into more than one range to drive a first power amplifier with a first range of theta, and to drive a second power amplifier with a second range of theta. In one or more embodiments, a main power amplifier is driven with a first phase range having a higher probability density function, and an overload power amplifier is driven with a first phase range having a lower probability density function. In one or more embodiments, a full adder may be used to combine the two phases wherein the sum signal is used to drive the main power amplifier, and the carry signal is used to drive the overload power amplifier.

    摘要翻译: 简而言之,根据一个或多个实施例,在脉冲位置和脉冲位置调制输出相位变送器中,相位角θ的范围可被划分成多于一个范围以驱动具有第一范围的第一功率放大器 的θ,并驱动具有θ的第二范围的第二功率放大器。 在一个或多个实施例中,主功率放大器由具有较高概率密度函数的第一相位范围驱动,而过载功率放大器由具有较低概率密度函数的第一相位范围驱动。 在一个或多个实施例中,全加器可以用于组合两相,其中求和信号用于驱动主功率放大器,并且进位信号用于驱动过载功率放大器。

    System and method for controlling resonance frequency of film bulk acoustic resonator devices
    30.
    发明授权
    System and method for controlling resonance frequency of film bulk acoustic resonator devices 有权
    用于控制膜体声波谐振器装置的谐振频率的系统和方法

    公开(公告)号:US07719389B2

    公开(公告)日:2010-05-18

    申请号:US11836538

    申请日:2007-08-09

    IPC分类号: H03H3/04 H03H9/02

    摘要: Disclosed is a system and method for controlling a resonance frequency of a Film Bulk Acoustic Resonator (FBAR) device. The system includes at least one switching capacitor coupled to the FBAR device and a modulator. The at least one switching capacitor includes at least one capacitor and a switch configuration disposed in series with the FBAR device and the at least one capacitor, which is switch configuration capable of opening and closing connection of the at least one capacitor with the FBAR device. The modulator is coupled to the switch configuration, which generates a switching condition signal based on the manufacturing variation in the FBAR device and the environmental effects on the FBAR device. The switch configuration performs opening and closing of the connection of the at least one capacitor and the FBAR device based on the switching condition signal.

    摘要翻译: 公开了一种用于控制膜体声波谐振器(FBAR)装置的谐振频率的系统和方法。 该系统包括耦合到FBAR器件和调制器的至少一个开关电容器。 所述至少一个开关电容器包括至少一个电容器和与所述FBAR器件和所述至少一个电容器串联布置的开关配置,所述至少一个电容器是能够打开和关闭所述至少一个电容器与所述FBAR器件的连接的开关配置。 调制器耦合到开关配置,其根据FBAR器件的制造变化和对FBAR器件的环境影响产生开关条件信号。 开关配置基于开关条件信号来执行至少一个电容器和FBAR器件的连接的打开和闭合。