会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Phase locked loop
    • 锁相环
    • US06924706B2
    • 2005-08-02
    • US10705521
    • 2003-11-10
    • Bart BalmWalter Mevissen
    • Bart BalmWalter Mevissen
    • H03L7/099H03L7/187H03L7/189H03L7/00
    • H03L7/189H03L7/099H03L7/187H03L2207/06
    • A phase locked loop has a voltage controlled oscillator with two tuning inputs. One tuning input can be supplied with a feedback signal via a frequency divider in a conventional phase locked loop. A frequency word, which is provided anyway for the purpose of setting the division ratio of the PLL and hence for the purpose of frequency preselection, is used not only to supply the frequency divider but also for compensatory tuning of frequency-determining components in the oscillator. The phase locked loop allows, particularly in inexpensive open loop modulation methods, a significant reduction in the frequency drift by virtue of a smaller or disappearing discrepancy in the tuning voltage in conjunction with a reduction in the memory effect of capacitors in loop filters using particularly simple circuitry measures.
    • 锁相环具有带两个调谐输入的压控振荡器。 一个调谐输入可以通过常规锁相环中的分频器提供反馈信号。 为了设定PLL的分频比,为了频率预选的目的而提供的频率字不仅用于提供分频器,而且还用于振荡器中的频率确定分量的补偿调谐 。 特别是在廉价的开环调制方法中,锁相环允许由于调谐电压中较小或消失的差异,结合在使用特别简单的环路滤波器中的电容器的存储器效应的降低,频率漂移显着降低 电路措施。