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    • 1. 发明申请
    • SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION OF AN OSCILLATOR
    • 减轻振荡器功耗的系统和方法
    • WO2010135084A2
    • 2010-11-25
    • PCT/US2010033681
    • 2010-05-05
    • QUALCOMM INCGARCIA JORGE AMOYER TODD
    • GARCIA JORGE AMOYER TODD
    • H03B5/36
    • H03B5/36H03B5/362H03B5/364H03B5/366H03B2200/0012H03B2200/0082H04B2001/6908
    • An apparatus for generating an oscillating signal including a negative-resistance circuit, a crystal, and a component to modify a series resonance of the crystal to decrease power consumption of the negative-resistance circuit in generating the oscillating signal. The component may include a positive-reactance circuit, one or more inductive elements, or pair of inductive elements coupled to the crystal. The apparatus may further include a frequency-tuning component for adjusting a frequency of the oscillating signal, such as a variable capacitor coupled to the crystal. The negative-resistance circuit may include a digital inverter circuit, an inverting analog amplifier, or a self-regulating circuit. The apparatus may further include a quiescent current source to supply a steady-state current to the negative-resistance circuit, and a start up current source to supply a boost current to the negative-resistance circuit only during start up to expedite the oscillating signal in reaching a defined steady-state condition.
    • 一种用于产生包括负电阻电路,晶体和分量的振荡信号的装置,以修改晶体的串联谐振,从而降低负电阻电路在产生振荡信号时的功耗。 该元件可以包括正电抗电路,一个或多个感应元件或耦合到晶体的一对感应元件。 该装置还可以包括用于调整振荡信号的频率的频率调谐组件,例如耦合到晶体的可变电容器。 负电阻电路可以包括数字反相器电路,反相模拟放大器或自调节电路。 该装置还可以包括静态电流源以向负电阻电路提供稳态电流,以及启动电流源,以仅在启动期间向负电阻电路提供升压电流以加速振荡信号 达到定义的稳态条件。