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    • 83. 发明申请
    • Apparatus and Method for IQ Imbalance Calibration in a Receiver
    • 接收机IQ不平衡校准的装置和方法
    • US20100329392A1
    • 2010-12-30
    • US12535484
    • 2009-08-04
    • Henrik JensenHooman Darabi
    • Henrik JensenHooman Darabi
    • H04L27/22
    • H04L27/3863
    • A method and apparatus is disclosed to compensate for an in-phase/quadrature phase (I/Q) imbalance in a communications receiver. The communications receiver may utilize information gained from observing one or more observational interferers to adjust one or more sequence parameters, such as gain and/or phase to provide some examples. The one or more observational interferers including one or more images outside of a desired frequency band of interest. The communications receiver provides one or more sequence parameter values to allow for real-time adjustment of the sequence parameters to compensate for the I/Q imbalances.
    • 公开了一种用于补偿通信接收机中的同相/正交相位(I / Q)不平衡的方法和装置。 通信接收机可以利用从观察一个或多个观测干扰源获得的信息来调整一个或多个序列参数,例如增益和/或相位以提供一些示例。 所述一个或多个观察性干扰源包括期望的感兴趣频带之外的一个或多个图像。 通信接收机提供一个或多个序列参数值以允许对序列参数的实时调整以补偿I / Q不平衡。
    • 85. 发明授权
    • Method and system for digital to analog conversion for power amplifier driver amplitude modulation
    • 用于功率放大器驱动器幅度调制的数模转换方法和系统
    • US07548180B2
    • 2009-06-16
    • US12039993
    • 2008-02-29
    • Henrik JensenAlireza Zolfaghari
    • Henrik JensenAlireza Zolfaghari
    • H03M3/00
    • H03M7/3008H03M1/0673H03M3/502H03M7/3026H03M7/3042H04L27/361
    • Aspects of a method and system for digital to analog conversion for power amplifier driver amplitude modulation are presented. Various aspects of the system may include circuitry that enables oversampling, within a single integrated circuit device, of each of a plurality of samples in a digital baseband signal. The circuitry may enable reduction of a number of bits, i.e., coarse quantization, in each of the oversampled plurality of samples so as to cause displacement of the quantization noise that occurred as a result of the coarse quantization. A subsequent signal may be generated based on the oversampled signal. The circuitry may enable the subsequent signal to be low-pass filtered utilizing filter circuitry in the single integrated circuit device, thereby attenuating the quantization noise displaced into the higher frequency range of the oversampled signal.
    • 提出了用于功率放大器驱动器幅度调制的数模转换方法和系统的方面。 系统的各个方面可以包括能够在单个集成电路装置内对数字基带信号中的多个采样中的每一个进行过采样的电路。 该电路可以使得在每个过采样的多个采样中减少多个位,即粗略量化,以便导致作为粗量化的结果而发生的量化噪声的位移。 可以基于过采样信号产生后续信号。 电路可以使得随后的信号可以利用单个集成电路器件中的滤波器电路进行低通滤波,从而衰减位移到过采样信号的较高频率范围内的量化噪声。
    • 89. 发明授权
    • Method and system for digital to analog conversion for power amplifier driver amplitude modulation
    • 用于功率放大器驱动器幅度调制的数模转换方法和系统
    • US07362251B2
    • 2008-04-22
    • US11436348
    • 2006-05-18
    • Henrik JensenAlireza Zolfaghari
    • Henrik JensenAlireza Zolfaghari
    • H03M3/00
    • H03M7/3008H03M1/0673H03M3/502H03M7/3026H03M7/3042H04L27/361
    • Aspects of a method and system for digital to analog conversion for power amplifier driver amplitude modulation are presented. Various aspects of the system may include circuitry that enables oversampling, within a single integrated circuit device, of each of a plurality of samples in a digital baseband signal. The circuitry may enable reduction of a number of bits, i.e., coarse quantization, in each of the oversampled plurality of samples so as to cause displacement of the quantization noise that occurred as a result of the coarse quantization. A subsequent signal may be generated based on the oversampled signal. The circuitry may enable the subsequent signal to be low-pass filtered utilizing filter circuitry in the single integrated circuit device, thereby attenuating the quantization noise displaced into the higher frequency range of the oversampled signal.
    • 提出了用于功率放大器驱动器幅度调制的数模转换方法和系统的方面。 系统的各个方面可以包括能够在单个集成电路装置内对数字基带信号中的多个采样中的每一个进行过采样的电路。 该电路可以使得在每个过采样的多个采样中减少多个位,即粗略量化,以便导致作为粗量化的结果而发生的量化噪声的位移。 可以基于过采样信号产生后续信号。 该电路可以使得后续信号可以利用单个集成电路器件中的滤波器电路进行低通滤波,从而衰减位移到过采样信号的较高频率范围内的量化噪声。