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    • 1. 发明申请
    • INTEGRATED CIRCUITS WITH CONFIGURABLE INDUCTORS
    • 集成电路与可配置电感
    • WO2011119369A3
    • 2011-11-24
    • PCT/US2011028465
    • 2011-03-15
    • ALTERA CORPDING WEIQISHUMARAYEV SERGEYWONG WILSONATESOGLU ALIIPPILI SHARAT BABU
    • DING WEIQISHUMARAYEV SERGEYWONG WILSONATESOGLU ALIIPPILI SHARAT BABU
    • H03L7/099H01F17/00
    • H03B5/1212H01F2021/125H01F2027/2809H01L2924/0002H03B5/1243H03B5/1268H01L2924/00
    • Integrated circuits with phase-locked loops are provided. Phase-locked loops may include an oscillator, a phase-frequency detector, a charge pump, a loop filter, a voltage-controlled oscillator, and a programmable divider. The voltage-controlled oscillator may include multiple inductors, an oscillator circuit, and a buffer circuit. A selected one of the multiple inductors may be actively coupled to the oscillator circuit. The voltage-controlled oscillators may have multiple oscillator circuits. Each oscillator circuit may be coupled to a respective inductor, may include a varactor, and may be powered by a respective voltage regulator. Each oscillator circuit may be coupled to a respective input transistor air in the buffer circuit through associated coupling capacitors. A selected one of the oscillator circuits may be turned on during normal operation by supplying a high voltage to the selected one of the oscillator circuit and by supply a ground voltage to the remaining oscillator circuits.
    • 提供带锁相环的集成电路。 锁相环可以包括振荡器,相位频率检测器,电荷泵,环路滤波器,电压控制振荡器和可编程分频器。 压控振荡器可以包括多个电感器,振荡器电路和缓冲器电路。 多个电感器中的选定的一个可以被主动地耦合到振荡器电路。 压控振荡器可以具有多个振荡器电路。 每个振荡器电路可以耦合到相应的电感器,可以包括变容二极管,并且可以由相应的电压调节器供电。 每个振荡器电路可以通过相关联的耦合电容器耦合到缓冲器电路中的相应输入晶体管空气。 通过向振荡器电路中选定的一个提供高电压,并通过向其余振荡器电路提供地电压,在正常操作期间,可以选择一个振荡器电路。
    • 8. 发明申请
    • TECHNIQUES FOR GENERATING FRACTIONAL CLOCK SIGNALS
    • 产生分数时钟信号的技术
    • WO2010033436A2
    • 2010-03-25
    • PCT/US2009056753
    • 2009-09-11
    • ALTERA CORPHOANG TIM TRIWONG WILSONSHUMARAYEV SERGEY
    • HOANG TIM TRIWONG WILSONSHUMARAYEV SERGEY
    • H03L7/193H03L7/087
    • H03L7/099H03L7/18
    • A circuit includes phase detection circuitry, a clock signal generation circuit, a first frequency divider, and a second frequency divider. The phase detection circuitry compares an input clock signal to a feedback signal to generate a control signal. The clock signal generation circuit generates a periodic output signal in response to the control signal. The first frequency divider divides a frequency of the periodic output signal by a first value to generate a first frequency divided signal. The second frequency divider divides the frequency of the periodic output signal by a second value to generate a second frequency divided signal. The first and the second frequency divided signals are routed to the phase detection circuitry as the feedback signal during different time intervals.
    • 一种电路包括相位检测电路,时钟信号生成电路,第一分频器和第二分频器。 相位检测电路将输入时钟信号与反馈信号进行比较以生成控制信号。 时钟信号产生电路响应于控制信号产生周期性输出信号。 第一分频器将周期性输出信号的频率除以第一值以产生第一分频信号。 第二分频器将周期性输出信号的频率除以第二值以产生第二分频信号。 第一和第二分频信号在不同的时间间隔期间作为反馈信号被路由到相位检测电路。