一种和DDS结合的高分辨率频率计设计

doi:10.3969/j.issn.1001-2400.2012.04.023

J4 ›› 2012, Vol. 39 ›› Issue (4): 126-130+160.doi: 10.3969/j.issn.1001-2400.2012.04.023

一种和DDS结合的高分辨率频率计设计

白丽娜;周渭;赵桀;张清兰

(西安电子科技大学机电工程学院，陕西西安 710071)

收稿日期:2011-06-01 出版日期:2012-08-20 发布日期:2012-10-08
通讯作者: 白丽娜
作者简介:白丽娜(1964-)，女，高级工程师，E-mail: bailina168@163.com．
基金资助:
国家自然科学基金资助项目(60772135 ，10978017)

Design of a high-resolution frequency meter combined with the DDS

BAI Lina;ZHOU Wei;ZHAO Jie;ZHANG Qinglan

(School of Mechano-electronic Engineering, Xidian Univ., Xi'an 710071， China)

Received:2011-06-01 Online:2012-08-20 Published:2012-10-08
Contact: BAI Lina

摘要/Abstract

摘要：

介绍了基于直接数字式频率合成器(DDS)的高分辨率频率计的设计方法，并以简单的电路完成对频率信号的高分辨率测量．在测频方案中，利用DDS跟踪被测频率的值，自动合成合适的频标信号，可实现在宽范围内，对任意频率信号的高分辨率等精度测量．样机实测数据表明，高分辨率频率计的测量分辨率可以达到10^-12/s量级．

关键词: 直接数字式频率合成器, 高分辨率, 频率计, 测频

Abstract:

This paper describes the method for designing a high-resolution frequency meter based on the DDS (Direct Digital Synthesizer) using a simple circuit. In this method, DDS is used to track the value of the measured frequency and synthesizes automatically appropriate frequency standard signals. This method is applicable to measuring signals within a wide range of frequency. Prototype measured data show that the high-resolution frequency meter can reach the magnitude of 10^-12/s.

Key words: DDS, high-resolution, frequency meter, frequency measurement

白丽娜;周渭;赵桀;张清兰. 一种和DDS结合的高分辨率频率计设计[J]. J4, 2012, 39(4): 126-130+160.

BAI Lina;ZHOU Wei;ZHAO Jie;ZHANG Qinglan. Design of a high-resolution frequency meter combined with the DDS[J]. J4, 2012, 39(4): 126-130+160.

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一种和DDS结合的高分辨率频率计设计

Design of a high-resolution frequency meter combined with the DDS

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