目录 摘要… Abstract........ …V 第一章绪论… 1.1研究背景… …1 1.2频率综合器的结构 …1 1.3分频器在频率综合器的作用…2 1.4研究内容及贡献… 3 1.5论文的组织结构…3 第二章分频器的研究… …4 2.1多模可编程分频器… …4 2.1.1可预置数的可编程分频器… …4 2.1.2 Pulse-Swallow型可编程分频器…5 2.1.3基于2/3分频单元的多模可编程分频器 6 2.2预分频器 6 2.2.1同步预分频器 .6 2.2.2异步逻辑的预分频器… …8 2.2.3相位开关型预分频器[16]… …9 2.3高速电路结构 …10 2.3.1TSPC电路… …10 2.3.2电流模式逻辑(CML)… …12 第三章可编程分频器设计… …14 3.1可编程分频器结构… …14 3.2P和S的实现方式… …14 3.2.1可编程分频器的分频范围…。 …14 3.2.2P和S的实现方式…。 …15 3.34/4.5双模预分频器… …17 3.3.14/4.5型双模预分频器结构… …18 3.3.2时序问题… …21 3.4可编程计数器… 23 3.4.1P计数器… …24 3.4.2S计数器 a. 24 3.4.3 bitcell… 28 3.5其它模块电路…30目录 摘要············································································································III Abstract ··································································································· IV 第一章 绪论 ······························································································1 1.1 研究背景 ························································································1 1.2 频率综合器的结构 ··········································································1 1.3 分频器在频率综合器的作用····························································2 1.4 研究内容及贡献··············································································3 1.5 论文的组织结构··············································································3 第二章 分频器的研究··················································································4 2.1 多模可编程分频器 ··········································································4 2.1.1 可预置数的可编程分频器·····················································4 2.1.2 Pulse-Swallow型可编程分频器············································5 2.1.3 基于 2/3 分频单元的多模可编程分频器································6 2.2 预分频器 ························································································6 2.2.1 同步预分频器·······································································6 2.2.2 异步逻辑的预分频器····························································8 2.2.3 相位开关型预分频器[16]······················································9 2.3 高速电路结构 ···············································································10 2.3.1 TSPC电路 ·········································································10 2.3.2 电流模式逻辑(CML)···························································12 第三章 可编程分频器设计 ········································································14 3.1 可编程分频器结构 ········································································14 3.2 P和S的实现方式 ··········································································14 3.2.1 可编程分频器的分频范围···················································14 3.2.2 P和S的实现方式································································15 3.3 4/4.5 双模预分频器 ······································································17 3.3.1 4/4.5 型双模预分频器结构·················································18 3.3.2 时序问题············································································21 3.4 可编程计数器 ···············································································23 3.4.1 P计数器·············································································24 3.4.2 S计数器·············································································24 3.4.3 bitcell·················································································28 3.5 其它模块电路 ···············································································30 I