Patent ID: 9130579
Filing Date: 2015-09-08
Classification: G04F,H03B,H03L,Y10T

Abstract:
1. An atomic oscillator comprising: an atomic cell in which an atom is enclosed; a magnetic field generation part to apply a magnetic field to the atomic cell; a reference oscillator that is controlled based on an atomic resonance signal outputted from the atomic cell and generates a reference signal; and a fractional N-PLL that receives the reference signal to generate a signal including a resonance frequency of the atom, wherein when a maximum digit of the resonance frequency adjustable by the magnetic field generation part is a boundary digit, the fractional N-PLL is operable to adjust the resonance frequency at least a digit that is one digit higher than the boundary digit, the fractional N-PLL includes an n-bit decimal setting part to determine a decimal part of a frequency division ratio, and when a bit number of the decimal setting part is n, a phase comparison frequency is f