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    • 8. 发明申请
    • INTEGRATED CIRCUIT COMPRISING FREQUENCY GENERATION CIRCUITRY FOR CONTROLLING A FREQUENCY SOURCE
    • 包含用于控制频率源的频率发生电路的集成电路
    • WO2010092491A2
    • 2010-08-19
    • PCT/IB2010/000614
    • 2010-02-10
    • FREESCALE SEMICONDUCTOR, INC.SALLE, DidierDOARE, OlivierDUGALLEIX, Stéphane
    • SALLE, DidierDOARE, OlivierDUGALLEIX, Stéphane
    • H03L7/183H03M3/02
    • G01S7/35G01S7/032G01S13/34G01S13/931G01S2013/9325H03C3/0925H03L7/1976
    • An integrated circuit (805) comprises frequency generation circuitry (800) for controlling a frequency source (810) for use in an automotive radar system. The frequency generation circuitry (800) comprises low-path modulation circuitry arranged to generate a first, low-path control signal (817) for providing lower frequency modulation of the frequency source (810), the low-path modulation circuitry comprising a Phase Locked Loop (PLL) (815) arranged to generate the low- path control signal (817) for controlling the frequency source (810) and a fractional-N divider (820) located within a feedback loop of the PLL (815), and frequency pattern control module (825) operably coupled to the fractional-N divider (820) and arranged to control the fractional-N divider (820), by way of at least a first, lower frequency pattern control signal (835). The frequency generation circuitry (800) further comprises high-path modulation circuitry arranged to generate a second, high-path control signal (847) for providing higher frequency modulation of the frequency source (810).
    • 集成电路(805)包括用于控制在汽车雷达系统中使用的频率源(810)的频率产生电路(800)。 频率产生电路(800)包括低通道调制电路,其布置成产生用于提供频率源(810)的较低频率调制的第一低通路控制信号(817),该低通道调制电路包括一个锁相 环路(PLL)(815)被布置成生成用于控制频率源(810)的低通路控制信号(817)和位于PLL(815)的反馈环路内的分数N分频器(820),频率 模式控制模块(825),其可操作地耦合到分数N分频器(820),并且被布置成通过至少第一较低频率模式控制信号(835)来控制分数N分频器(820)。 频率发生电路(800)还包括高路径调制电路,其布置成产生用于提供频率源(810)的较高频率调制的第二高路径控制信号(847)。