一种精确的360°范围相位检测器，用于fdNIRS应用，使用一对XNORs

2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI:10.1109/MWSCAS.2015.7282161

Siavash S. Yazdi, A. Cerussi, Michael M. Green

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引用次数: 5

摘要

提出了一种新的同频信号间精确相位检测电路。本文说明了传统相检波器的非理想性如何引起平均电压与相位特性的非线性。所提出的电路利用一对xnor型鉴相器，对其应用信号和正交参考时钟。然后判定电路选择两个xno中的哪一个用于输出，这保证电路将在其线性区域内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A precise 360°-range phase detector for fdNIRS application using a pair of XNORs

A novel circuit for precise phase detection between two signals with the same frequency is presented. It is shown how the non-idealities in conventional phase detectors give rise to nonlinearities in the average voltage vs. phase characteristic. The proposed circuit makes use of a pair of XNOR-type phase detectors, to which signal and quadrature reference clocks are applied. A decision circuit then selects which of the two XNORs is used for the output, which guarantees that the circuit will be well within its linear region.

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2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)

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