环路滤波器(LoopFilter,简称LPF)是锁相环(PLL)的重要组成单元,它在很人程度上决定 了PLL的性能。在PLL频率综合器的设计中,为了获得稳定的VCO凋谐电压,环路滤波器起到了 维持环路稳定性、控制环路带内外噪声、防止VCO调谐电压控制线上电压突变、抑制参考边带杂散 干扰(spurs)等重要作州,是PLL频率综合器的设计与调试...
Achieving optimal design of phase-locked loop (PLL) is a major challenge in WiMax technology in order to improve system behavior against noise and to enhance Quality of Service (QOS). A new loop filter design method for phase locked loop (PLLs) is introduced taking into consideration various ...
A deep insight into the derivation of the PLL's small-signal model, main characteristics, stability analysis, and loop filter design are discussed in this paper. The main advantages of the proposed method are explained in terms of several performance indexes, such as settling time, steady-state...
宽带PLL环路滤波器的设计 东南大学 硕士学位论文 宽带PLL环路滤波器的设计 姓名：刘奡 申请学位级别：硕士 专业：微电子学与固体电子学指导教师：陆生礼 20060219
现在一些功能强大的时钟芯片集成的PLL架构大多如下,最重要的部分就是鉴相器(Phase Detector)电荷泵(Charge Pump,用于输出电压控制VCO频率),环路滤波器(Loop Filter),压控振荡器(VCO)以及N Diverder。 也就是下面框图中的那个环。 这里主要挑出一些PLL在实际应用中非常重要的问题来总结一下: 1.鉴相频率Fpd,在...
图书Optimal Pll Loop Filter Design for Mobile Wimax Via LMI 介绍、书评、论坛及推荐
design oftheLPFbecomethe keyofmany PLL applications. ThewidebandPLL loop filter designed inthisthesisisusedinanASICfordigitai TVtuner.Thechip convertsthe、Ⅳide spectrum ofTV signals toafixedmiddle frequency,about36MHz,ThewldebandPLL loop filterdesigned inthisthetismustbewell applicable in quite wide tu...
Enter LG, CP current, Fr, Fout, and BW, program outputs filter values and divider ratio PLL Loop Filter Design Type 2 with Extra Pole: This tool calculates PLL loop components of Type 2 PLL with extra pole MATHCAD/MATLAB Second order PLL Mathcad design routine: Analysis of a second-orde...
而如何将高频分量去除并把相位的误差信息转换为DDS的相位控制信号呢(在模拟域则为压控振荡器的相位控制信号),这里就需要环路滤波器(loop filter)出场了。 环路滤波器(loop filter) loop filter的功能就是将鉴相器输出的误差信号的高频信号滤除并转换为DDS的相位控制信号,在数字域很自然的会想到FIR+cordic算法。通过...
Rev 0; 6/17 Abstract This document briefly covers PLL basics and explains how to use the PLL loop filter spreadsheet calculator for the MAX2769/MAX2769C. The calculator allows users to design and implement the loop filter values specific to their application.Maxim Integrated Page 1 of 8 ...