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    • 1. 发明授权
    • Systems and methods for implementing a harmonic rejection mixer
    • 用于实现谐波抑制混频器的系统和方法
    • US08165538B2
    • 2012-04-24
    • US12145599
    • 2008-06-25
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • H04B1/04H04B15/00
    • H03D7/1441H03D7/1458H03D7/1483H03D7/165H03D2200/0047H03D2200/0086
    • Various embodiments of systems and methods for generating local oscillator (LO) signals for a harmonic rejection mixer are provided. One embodiment is a system for generating local oscillator (LO) signals for a harmonic rejection mixer. One such system comprises a local oscillator, a divide-by-N frequency divider, a divide-by-three frequency divider, and a harmonic rejection mixer. The local oscillator is configured to provide a reference frequency signal. The divide-by-N frequency divider is configured to divide the reference frequency signal by a value N and provide an output signal. The divide-by-three frequency divider is configured to receive the output signal of the divide-by-N frequency divider and divide the output signal into three phase-offset signals. The harmonic rejection mixer is configured to receive the three phase-offset signals and eliminate third frequency harmonics.
    • 提供了用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统和方法的各种实施例。 一个实施例是用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统。 一个这样的系统包括本地振荡器,N分频分频器,除以三分频器和谐波抑制混频器。 本地振荡器被配置为提供参考频率信号。 N分频器被配置为将参考频率信号除以值N并提供输出信号。 三分频分频器被配置为接收除以N分频器的输出信号,并将输出信号分成三个相位偏移信号。 谐波抑制混频器被配置为接收三个相位偏移信号并消除第三频率谐波。
    • 2. 发明授权
    • Systems and methods for implementing a harmonic rejection mixer
    • 用于实现谐波抑制混频器的系统和方法
    • US08406707B2
    • 2013-03-26
    • US13419741
    • 2012-03-14
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • H04B1/04H04B15/00
    • H03D7/1441H03D7/1458H03D7/1483H03D7/165H03D2200/0047H03D2200/0086
    • Various embodiments of systems and methods for generating local oscillator (LO) signals for a harmonic rejection mixer are provided. One embodiment is a system for generating local oscillator (LO) signals for a harmonic rejection mixer. One such system comprises a local oscillator, a divide-by-N frequency divider, a divide-by-three frequency divider, and a harmonic rejection mixer. The local oscillator is configured to provide a reference frequency signal. The divide-by-N frequency divider is configured to divide the reference frequency signal by a value N and provide an output signal. The divide-by-three frequency divider is configured to receive the output signal of the divide-by-N frequency divider and divide the output signal into three phase-offset signals. The harmonic rejection mixer is configured to receive the three phase-offset signals and eliminate third frequency harmonics.
    • 提供了用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统和方法的各种实施例。 一个实施例是用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统。 一个这样的系统包括本地振荡器,N分频分频器,除以三分频器和谐波抑制混频器。 本地振荡器被配置为提供参考频率信号。 N分频器被配置为将参考频率信号除以值N并提供输出信号。 三分频分频器被配置为接收除以N分频器的输出信号,并将输出信号分成三个相位偏移信号。 谐波抑制混频器被配置为接收三个相位偏移信号并消除第三频率谐波。
    • 3. 发明申请
    • SYSTEMS AND METHODS FOR IMPLEMENTING A HARMONIC REJECTION MIXER
    • 用于实施谐波抑制混合器的系统和方法
    • US20120171973A1
    • 2012-07-05
    • US13419741
    • 2012-03-14
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • H04B1/04G06G7/00H04B1/26
    • H03D7/1441H03D7/1458H03D7/1483H03D7/165H03D2200/0047H03D2200/0086
    • Various embodiments of systems and methods for generating local oscillator (LO) signals for a harmonic rejection mixer are provided. One embodiment is a system for generating local oscillator (LO) signals for a harmonic rejection mixer. One such system comprises a local oscillator, a divide-by-N frequency divider, a divide-by-three frequency divider, and a harmonic rejection mixer. The local oscillator is configured to provide a reference frequency signal. The divide-by-N frequency divider is configured to divide the reference frequency signal by a value N and provide an output signal. The divide-by-three frequency divider is configured to receive the output signal of the divide-by-N frequency divider and divide the output signal into three phase-offset signals. The harmonic rejection mixer is configured to receive the three phase-offset signals and eliminate third frequency harmonics.
    • 提供了用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统和方法的各种实施例。 一个实施例是用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统。 一个这样的系统包括本地振荡器,N分频分频器,除以三分频器和谐波抑制混频器。 本地振荡器被配置为提供参考频率信号。 N分频器被配置为将参考频率信号除以值N并提供输出信号。 三分频分频器被配置为接收除以N分频器的输出信号,并将输出信号分成三个相位偏移信号。 谐波抑制混频器被配置为接收三个相位偏移信号并消除第三频率谐波。
    • 4. 发明申请
    • SYSTEMS AND METHODS FOR IMPLEMENTING A HARMONIC REJECTION MIXER
    • 用于实施谐波抑制混合器的系统和方法
    • US20090325510A1
    • 2009-12-31
    • US12145599
    • 2008-06-25
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • Rajasekhar PullelaDmitriy RozenblitHamid Firouzkouhi
    • G06G7/161H03K5/00
    • H03D7/1441H03D7/1458H03D7/1483H03D7/165H03D2200/0047H03D2200/0086
    • Various embodiments of systems and methods for generating local oscillator (LO) signals for a harmonic rejection mixer are provided. One embodiment is a system for generating local oscillator (LO) signals for a harmonic rejection mixer. One such system comprises a local oscillator, a divide-by-N frequency divider, a divide-by-three frequency divider, and a harmonic rejection mixer. The local oscillator is configured to provide a reference frequency signal. The divide-by-N frequency divider is configured to divide the reference frequency signal by a value N and provide an output signal. The divide-by-three frequency divider is configured to receive the output signal of the divide-by-N frequency divider and divide the output signal into three phase-offset signals. The harmonic rejection mixer is configured to receive the three phase-offset signals and eliminate third frequency harmonics.
    • 提供了用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统和方法的各种实施例。 一个实施例是用于产生用于谐波抑制混频器的本地振荡器(LO)信号的系统。 一个这样的系统包括本地振荡器,N分频分频器,除以三分频器和谐波抑制混频器。 本地振荡器被配置为提供参考频率信号。 N分频器被配置为将参考频率信号除以值N并提供输出信号。 三分频分频器被配置为接收除以N分频器的输出信号,并将输出信号分成三个相位偏移信号。 谐波抑制混频器被配置为接收三个相位偏移信号并消除第三频率谐波。
    • 6. 发明授权
    • Low noise mixer
    • 低噪音混音器
    • US07398073B2
    • 2008-07-08
    • US11220030
    • 2005-09-06
    • Rajasekhar PullelaTirdad SowlatiDmitriy Rozenblit
    • Rajasekhar PullelaTirdad SowlatiDmitriy Rozenblit
    • H04B1/26
    • H04B1/28H03D7/1433H03D7/1441H03D7/1458H03D7/1466H03D7/165H03D2200/0019H03D2200/0084
    • A low noise mixer comprises a first mixer core configured to receive a radio frequency (RF) input signal having an RF frequency, and a first local oscillator signal, wherein the first local oscillator signal is at a frequency that is nominally twice the frequency of the RF frequency, the first mixer core configured to switch the RF input signal to at least one secondary mixer core at a frequency that coincides with the frequency of the first local oscillator signal, the at least one secondary mixer core configured to receive the switched RF input signal and a second local oscillator signal, where the second local oscillator signal is at the same nominal frequency as the RF input signal, and wherein switching the RF input signal at the frequency of the first local oscillator signal substantially eliminates flicker noise associated with the down-conversion process.
    • 低噪声混频器包括被配置为接收具有RF频率的射频(RF)输入信号和第一本地振荡器信号的第一混频器核心,其中第一本地振荡器信号的频率是标称频率为 RF频率,所述第一混频器核心被配置为以与所述第一本机振荡器信号的频率一致的频率将所述RF输入信号切换到至少一个辅助混频器内核,所述至少一个辅助混频器核心被配置为接收所述切换的RF输入 信号和第二本地振荡器信号,其中第二本机振荡器信号处于与RF输入信号相同的标称频率,并且其中以第一本地振荡器信号的频率切换RF输入信号基本上消除与下降相关联的闪烁噪声 转换过程。