| 摘要 |
The present invention relates to a phase fixing loop device including multiple negative feedback loops and, more specifically, to a phase fixing loop device including multiple negative feedback loops, capable of fixing a phase and a frequency of an output signal, outputted from a voltage control oscillator, by forming two negative feedback loops. To achieve the purpose, the present invention includes an external negative feedback loop fixing a phase and a frequency of a predetermined output signal by outputting a voltage corresponding to a phase difference and a frequency difference by relatively comparing a reference signal to a branch signal of the output signal, outputted from the voltage control oscillator; and an internal negative feedback loop sensing a frequency change by receiving the frequency of the output signal by comprising a negative feedback loop, independent from the external negative feedback loop, and outputting a voltage corresponding to the frequency change. According to a predetermined range of first and second slope values of the voltage control oscillator, the external negative feedback loop is a sub negative feedback loop, and an internal negative feedback loop is a main negative feedback loop. |
