24Gb/s 0.2μm GaAs PHEMT 2:1复接器  

0.2μm 24Gb/s GaAs PHEMT Multiplexer

作　　者：杨守军[1] 王志功[1] 朱恩[1] 冯军[1] 熊明珍[1] 夏春晓[1] 

机构地区：[1]东南大学射频与光电集成电路研究所,江苏南京210096

出　　处：《电路与系统学报》2004年第5期8-11,共4页Journal of Circuits and Systems

基　　金：863 计划研究项目(2001AA312050)

摘　　要：超高速复接器是光通信传输系统中的关键部件之一和速度瓶颈之一。本文利用 0.2μm GaAs PHEMT(砷化镓伪高电子迁移率晶体管)工艺,设计出了超高速 2:1 复接器。应用一种简单而有效的宽带匹配方法,使得外部信号有效地传输到芯片内部。利用源极耦合电容的微分作用,加速晶体管的开、关转换,提高锁存器和 D 触发器的工作速率。窄传输线当作电感的应用,补偿了电容的影响,同时还减小了芯片面积。设计了一种测试方法,解决了复接器需要多路超高速信号源的问题。芯片通过功能测试验证,数据速率可达到 24Gb/s。A 24Gb/s multiplexer is realized using 0.2μm GaAs PHEMT technology. Broadband data signals are delivered effectively into the chip by applying a simple matching method. The latch and DFF are speeded up by means of source-coupled capacitors. A narrow transmission line can be regarded as an inductor. This trick intends to save the area as conventional inductor occupies as to reduce chip’s total size. An inductor compensates the affection of capacitive components. Associated test method is presented as to satisfy the need of two ultra high speed input signals for the multiplexer. Experiment results show that this chip can work properly at 24Gb/s.

关 键 词：复接器 匹配 源极耦合电容 传输线 测试 

分 类 号：TN722.7[电子电信—电路与系统]