一种具有π相位差检测的高速相位检测电路

Saeed Taheri, Noushin Ghaderi, Amin Amani
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引用次数: 4

摘要

提出了一种新的动态逻辑鉴相器(PD)结构和π检测电路。提出了一种结构简单、功耗低、最高工作频率高、精度高的PD。此外,该电路基于开环结构,解决了传统电路的盲区和死区问题。当两个输入相位差为180°时,大多数pd存在一个主要问题。在这种情况下,循环被锁定在错误的模式。为了解决这一问题,提出了一种π检测电路,该电路产生一个错误信号以防止π相位差锁定。SPICE仿真结果表明,所提PD的工作频率范围为1MHz ~ 8GHz。电路采用0.18µm CMOS工艺设计。电路在最高频率时的功耗为0.6 mW。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new high speed phase detection circuit with π phase difference detection
This paper proposed a new structure of Dynamic-Logic Phase Detector (PD) and a π detection circuit. A very simple, low power consumption, high maximum operating frequency and high precision PD is presented. In addition the proposed circuit is based on an open loop architecture and solves the blind-zone and dead zone problems of the conventional circuits. Most PDs have a main problem when the phase difference of two inputs is 180°. In this situation, the loop becomes locked in wrong mode. To solve this problem, a π detection circuit is proposed which, generates an error signal to prevent from locking at π phase difference. SPICE simulation results show that, operational frequency range of proposed PD is 1MHz to 8GHz. The circuit has been designed in 0.18µm CMOS technology. The power consumption of circuit is 0.6 mW at highest frequency.
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