A high-precision frequency measurement method combining π-type delay chain and different frequency phase coincidence detection

IF 1.2 4区工程技术 Q4 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Analog Integrated Circuits and Signal Processing Pub Date : 2023-12-26 DOI:10.1007/s10470-023-02220-5

Baoqiang Du, Wenming Li

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引用次数: 0

Abstract

A high-precision frequency measurement method combining π-type delay chain and different frequency phase coincidence detection is proposed based on different frequency phase comparison. A delay chain is used to delay the frequency standard signal. The coarse delay can generate more phase coincidence points at the key position of the reference gate, which can easily form a high-precision actual gate and realize a fast response time of the frequency measurement. The fine delay can achieve an ultra-high measurement resolution better than picoseconds without changing the frequency relationship between the frequency standard signal and the measured signal. The experimental results show that the proposed method has a high frequency accuracy and stability. Compared with the traditional frequency detection method, it has the advantages of simple circuit, fast measurement speed, and high measurement accuracy. Therefore, it can be widely used in satellite navigation, space positioning, metrology, communication, precision time–frequency measurement, and other fields.

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结合 π 型延迟链和不同频率相位重合检测的高精度频率测量方法

摘要基于异频相位比较，提出了一种结合π型延迟链和异频相位重合检测的高精度频率测量方法。利用延迟链对频率标准信号进行延迟。粗延迟能在参考门的关键位置产生更多的相位重合点，从而容易形成高精度的实际门，实现频率测量的快速响应。细延迟可以在不改变频率标准信号和被测信号之间频率关系的情况下，实现优于皮秒的超高测量分辨率。实验结果表明，所提出的方法具有较高的频率精度和稳定性。与传统的频率检测方法相比，它具有电路简单、测量速度快、测量精度高等优点。因此，它可广泛应用于卫星导航、空间定位、计量、通信、精密时频测量等领域。

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来源期刊

Analog Integrated Circuits and Signal Processing 工程技术-工程：电子与电气

CiteScore

0.30

自引率

7.10%

发文量

141

审稿时长

7.3 months

期刊介绍： Analog Integrated Circuits and Signal Processing is an archival peer reviewed journal dedicated to the design and application of analog, radio frequency (RF), and mixed signal integrated circuits (ICs) as well as signal processing circuits and systems. It features both new research results and tutorial views and reflects the large volume of cutting-edge research activity in the worldwide field today. A partial list of topics includes analog and mixed signal interface circuits and systems; analog and RFIC design; data converters; active-RC, switched-capacitor, and continuous-time integrated filters; mixed analog/digital VLSI systems; wireless radio transceivers; clock and data recovery circuits; and high speed optoelectronic circuits and systems.