公开(公告)号：US3882403A

公开(公告)日：1975-05-06

申请号：US45166574

申请日：1974-03-14

Applicant: GEN DYNAMICS CORP

Inventor： GERKEN WILLIAM G

IPC: H03L7/099 ,  H03B19/00

CPC classification number: H03L7/0994

Abstract: A digital frequency synthesizer is described which employs an accumulator to determine the number of cycles of a reference frequency source which is divisible into the period of the frequency to be generated and to determine a digital number which is related to the remainder or the fractional cycle of the reference frequency required to complete the period of the generated frequency. A digital/analog interpolator translates this digital number into a fractional period and combines it with the integral determined by the accumulator division and outputs a pulse train having the combined period of the frequency to be synthesized.

Abstract translation: 描述了一种数字频率合成器，其使用累加器来确定参考频率源的周期数，该参考频率源可以被分解为要生成的频率的周期，并且确定与数字数字的剩余或分数周期相关的数字数字 完成产生频率周期所需的参考频率。 数字/模拟内插器将该数字数字转换为分数周期，并将其与由累加器分频确定的积分组合，并输出具有要合成的频率的组合周期的脉冲串。