| 摘要 |
PROBLEM TO BE SOLVED: To provide a frequency synthesizer capable of finely switching a frequency and acquiring high phase noise characteristics.SOLUTION: The frequency synthesizer is configured to connect a variable divider 5 with the outside of a PLL loop comprised of a voltage control oscillator 8, a power distributor 9, a mixer 10, a filter 11, an amplifier 12, a phase comparator 13 and a loop filter 14 and to provide a frequency division number control circuit 6 for controlling a frequency division number Nof a frequency by the variable divider 5. |
