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    • 1. 发明申请
    • LOCAL OSCILLATOR SIGNAL GENERATION USING OPPORTUNISTIC SYNTHESIZER TO CLOCK DIGITAL SYNTHESIS
    • 用机械合成器实现数字综合的局部振荡信号发生
    • WO2018057153A1
    • 2018-03-29
    • PCT/US2017/047100
    • 2017-08-16
    • INTEL CORPORATION
    • KUSHNIR, IgalHOROVITZ, GilZUR, Sarit
    • H03L7/08H03L7/099
    • H04B1/38H03B21/00H03B21/01H03L7/08H03L7/099H03L2207/06H04B17/11H04L27/205
    • Control circuitry for use in generating a local oscillator (LO) signal is provided. Synthesizer control circuitry is configured to control synthesizer circuity to generate an analog oscillator signal having a first frequency at which phase noise is minimized. DS control circuitry is configured to generate a control word or message to cause DS circuitry to generate a digital DS signal having a desired frequency when the DS circuitry is clocked by the oscillator signal having the first frequency. The desired frequency is proportional to the LO signal frequency. The digital DS signal generated by the DS circuitry is used to generate the LO signal. Thus the first frequency used to clock the DS circuitry is selected to optimize the oscillator rather than having some relationship to the LO frequency. In addition, a single synthesizer may be used in order to simultaneously generate many LO signals.
    • 提供用于产生本地振荡器(LO)信号的控制电路。 合成器控制电路被配置为控制合成器电路以产生具有第一频率的模拟振荡器信号,在该第一频率处相位噪声被最小化。 DS控制电路被配置为当DS电路由具有第一频率的振荡器信号计时时,生成控制字或消息以使DS电路生成具有期望频率的数字DS信号。 所需频率与LO信号频率成正比。 由DS电路生成的数字DS信号用于生成LO信号。 因此,选择用于DS电路时钟的第一个频率来优化振荡器,而不是与LO频率有某种关系。 另外,可以使用单个合成器来同时产生许多LO信号。