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    • 41. 发明申请
    • MIXED-MODE PLL
    • 混合模式PLL
    • US20100231310A1
    • 2010-09-16
    • US12404384
    • 2009-03-16
    • Ping-Ying WangHsiang-Hui Chang
    • Ping-Ying WangHsiang-Hui Chang
    • H03L7/085
    • H03L7/099H03L7/16
    • A mixed-mode PLL is disclosed. The mixed-mode PLL comprises a digital sigma-delta modulator, a low pass filter, and a digital controlled oscillator. The digital sigma-delta modulator receives a fractional bit signal. The low pass filter is coupled to the digital sigma-delta modulator. The low pass filter receives an output signal of the digital sigma-delta modulator and converts the output signal to an analog control signal. The digital controlled oscillator comprises a varactor dynamically coupled to the low pass filter and receiving the analog control signal.
    • 公开了一种混合模式PLL。 混合模式PLL包括数字Σ-Δ调制器,低通滤波器和数字控制振荡器。 数字Σ-Δ调制器接收分数位信号。 低通滤波器耦合到数字Σ-Δ调制器。 低通滤波器接收数字Σ-Δ调制器的输出信号并将输出信号转换为模拟控制信号。 数字控制振荡器包括动态耦合到低通滤波器并接收模拟控制信号的变容二极管。
    • 44. 发明授权
    • Devices of IQ mismatch calibration, and methods thereof
    • IQ失配校准装置及其方法
    • US08861644B2
    • 2014-10-14
    • US13168226
    • 2011-06-24
    • Hsin-Hung ChenHsiang-Hui Chang
    • Hsin-Hung ChenHsiang-Hui Chang
    • H04L27/20H04L27/36
    • H04L27/364
    • The device with IQ mismatch compensation includes a transmitter oscillator, a transmitter module, and a loop-back module. The transmitter module is arranged to up-convert a transmitter signal with the oscillator signal to generate an RF signal. The loop-back module is arranged to down-convert the RF signal with the oscillator signal to determine a transmitter IQ mismatch parameter, and effects of IQ mismatch of the loop-back module are calibrated by inputting a test signal and the oscillator signal before the down-converting of the RF signal. The transmitter module is arranged to reduce effects of IQ mismatch of a transmitter path in the transmitter module according to the transmitter IQ mismatch parameter.
    • 具有IQ失配补偿的器件包括发射机振荡器,发射器模块和环回模块。 发射机模块被布置成使用振荡器信号对发射机信号进行上变频以产生RF信号。 环回模块被布置为利用振荡器信号对RF信号进行下变频,以确定发射机IQ失配参数,并且通过在测试信号之前输入测试信号和振荡器信号来校准环回模块的IQ失配的影响 RF信号的下变频。 发射机模块被布置为根据发射机IQ不匹配参数来减少发射机模块中的发射机路径的IQ失配的影响。
    • 46. 发明申请
    • DEVICES OF IQ MISMATCH CALIBRATION, AND METHODS THEREOF
    • IQ错配校准的设备及其方法
    • US20120328041A1
    • 2012-12-27
    • US13168226
    • 2011-06-24
    • Hsin-Hung ChenHsiang-Hui Chang
    • Hsin-Hung ChenHsiang-Hui Chang
    • H04B15/00H04L25/03
    • H04L27/364
    • The device with IQ mismatch compensation includes a transmitter oscillator, a transmitter module, and a loop-back module. The transmitter module is arranged to up-convert a transmitter signal with the oscillator signal to generate an RF signal. The loop-back module is arranged to down-convert the RF signal with the oscillator signal to determine a transmitter IQ mismatch parameter, and effects of IQ mismatch of the loop-back module are calibrated by inputting a test signal and the oscillator signal before the down-converting of the RF signal. The transmitter module is arranged to reduce effects of IQ mismatch of a transmitter path in the transmitter module according to the transmitter IQ mismatch parameter.
    • 具有IQ失配补偿的器件包括发射机振荡器,发射器模块和环回模块。 发射机模块被布置成使用振荡器信号对发射机信号进行上变频以产生RF信号。 环回模块被布置为利用振荡器信号对RF信号进行下变频,以确定发射机IQ失配参数,并且通过在测试信号之前输入测试信号和振荡器信号来校准环回模块的IQ失配的影响 RF信号的下变频。 发射机模块被布置为根据发射机IQ不匹配参数来减少发射机模块中的发射机路径的IQ失配的影响。
    • 47. 发明申请
    • SIGNAL GENERATING CIRCUIT AND SIGNAL GENERATING METHOD
    • 信号发生电路和信号发生方法
    • US20120212296A1
    • 2012-08-23
    • US13029130
    • 2011-02-17
    • Hsin-Hung ChenHsiang-Hui Chang
    • Hsin-Hung ChenHsiang-Hui Chang
    • H03L7/24H03L7/099
    • H03C3/0925H03C3/0941H03C3/0958
    • A signal generating circuit includes: an operating circuit arranged to generate a first control signal according to a reference clock signal and a feedback oscillating signal; a controllable oscillator arranged to generate an output oscillating signal according to the first control signal and a second control signal; a feedback circuit arranged to generate the feedback oscillating signal according to the output oscillating signal and a third control signal; a control circuit arranged to generate the second control signal and the third control signal according to an input signal; and a calibrating circuit arranged to calibrate the control circuit to adjust the second control signal by detecting a phase difference between the reference clock signal and the feedback oscillating signal.
    • 信号发生电路包括:操作电路,被配置为根据参考时钟信号和反馈振荡信号产生第一控制信号; 可控振荡器,被配置为根据第一控制信号和第二控制信号产生输出振荡信号; 反馈电路,被配置为根据输出振荡信号和第三控制信号产生反馈振荡信号; 控制电路,被配置为根据输入信号产生第二控制信号和第三控制信号; 以及校准电路,其布置成通过检测参考时钟信号和反馈振荡信号之间的相位差校准控制电路来调整第二控制信号。