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    • 17. 发明申请
    • DIGITAL RECEIVER
    • 数字接收机
    • US20100322361A1
    • 2010-12-23
    • US12818510
    • 2010-06-18
    • Seon-Ho HANHyun Kyu Yu
    • Seon-Ho HANHyun Kyu Yu
    • H04L27/08
    • H04B1/0025H04B1/001
    • In a digital receiver, a noise attenuation and signal magnitude mapping variable amplifying unit includes a filter and an amplifier, amplifies and band-bass filters an analog signal and attenuating white noise and an interference signal other than a band signal. An ADC performs sub sampling on a carrier frequency of a desired signal and performs oversampling on the band of the desired signal by using a sampling frequency to convert the analog signal which has passed through the noise attenuation and signal magnitude mapping variable amplifying unit into a digital signal of a direct conversion frequency band or an intermediate frequency band. The ADC has a dynamic range for processing both the desired signal and an undesired signal adjacent to the desired signal. A digital signal processing unit converts a signal frequency of the digital signal or digital-filters an undesired signal within the digital signal and processes the digital signal by digitally adjusting a gain.
    • 在数字接收机中,噪声衰减和信号幅度映射可变放大单元包括滤波器和放大器,对模拟信号进行放大和频带滤波,并衰减白噪声和除频带信号之外的干扰信号。 ADC对期望信号的载波频率进行子采样,并通过使用采样频率对已经通过噪声衰减和信号幅度可变放大单元的模拟信号进行数字化处理,对期望信号的频带进行过采样, 直接转换频带或中频带的信号。 ADC具有用于处理期望信号和与期望信号相邻的不期望信号的动态范围。 数字信号处理单元转换数字信号的信号频率或数字滤波数字信号内的不需要的信号,并通过数字调节增益来处理数字信号。
    • 18. 发明授权
    • Variable gain amplifier
    • 可变增益放大器
    • US07348849B2
    • 2008-03-25
    • US11497461
    • 2006-08-01
    • Seon Ho HanHyun Kyu Yu
    • Seon Ho HanHyun Kyu Yu
    • H03F3/45H03G3/10
    • H03G1/007H03F1/342H03F3/211H03F3/45206H03F3/45659H03F2200/15H03F2203/21154H03F2203/45008H03F2203/45302H03G7/06
    • A complementary metal oxide semiconductor (CMOS) variable gain amplifier has a wider decibel-linear gain variation characteristic with respect to a control voltage when a signal is amplified. The variable gain amplifier includes: a bias input circuit for supplying a current corresponding to a bias voltage; an operation region combination and feedback circuit connected to the bias input circuit and combining at least two amplifiers by feedback in response to a control voltage, each amplifier having a decibel-linear characteristic in saturation and triode regions of a complementary metal oxide semiconductor (CMOS); and a bias output circuit connected to the bias input circuit, and outputting bias current controlled by the operation region combination and feedback circuit.
    • 互补金属氧化物半导体(CMOS)可变增益放大器在信号被放大时相对于控制电压具有更宽的分贝线性增益变化特性。 可变增益放大器包括:偏置输入电路,用于提供对应于偏置电压的电流; 连接到偏置输入电路的操作区域组合和反馈电路,并且通过响应于控制电压的反馈来组合至少两个放大器,每个放大器在互补金属氧化物半导体(CMOS)的饱和度和三极管区域中具有分贝线性特性, ; 以及偏置输出电路,连接到偏置输入电路,并输出由操作区域组合和反馈电路控制的偏置电流。
    • 19. 发明申请
    • Variable gain amplifier
    • 可变增益放大器
    • US20070132513A1
    • 2007-06-14
    • US11497461
    • 2006-08-01
    • Seon Ho HanHyun Kyu Yu
    • Seon Ho HanHyun Kyu Yu
    • H03G3/10
    • H03G1/007H03F1/342H03F3/211H03F3/45206H03F3/45659H03F2200/15H03F2203/21154H03F2203/45008H03F2203/45302H03G7/06
    • A complementary metal oxide semiconductor (CMOS) variable gain amplifier has a wider decibel-linear gain variation characteristic with respect to a control voltage when a signal is amplified. The variable gain amplifier includes: a bias input circuit for supplying a current corresponding to a bias voltage; an operation region combination and feedback circuit connected to the bias input circuit and combining at least two amplifiers by feedback in response to a control voltage, each amplifier having a decibel-linear characteristic in saturation and triode regions of a complementary metal oxide semiconductor (CMOS); and a bias output circuit connected to the bias input circuit, and outputting bias current controlled by the operation region combination and feedback circuit.
    • 互补金属氧化物半导体(CMOS)可变增益放大器在信号被放大时相对于控制电压具有更宽的分贝线性增益变化特性。 可变增益放大器包括:偏置输入电路,用于提供对应于偏置电压的电流; 连接到偏置输入电路的操作区域组合和反馈电路,并且通过响应于控制电压的反馈来组合至少两个放大器,每个放大器在互补金属氧化物半导体(CMOS)的饱和度和三极管区域中具有分贝线性特性, ; 以及偏置输出电路,连接到偏置输入电路,并输出由操作区域组合和反馈电路控制的偏置电流。