基于负阻抗电路的跨阻放大器的设计  

Design of Transimpedance Amplifier Based Negative Impedance Circuit

作　　者：李言胜[1] 

机构地区：[1]青岛理工大学通信与电子工程学院,山东青岛266033

出　　处：《湘潭大学自然科学学报》2010年第3期103-105,共3页Natural Science Journal of Xiangtan University

基　　金：教育部留学回国人员科研启动基金资助项目(教外司留[2010]609号第38批)

摘　　要：对基于负阻抗电路技术的跨阻放大器的带宽性能进行了理论分析与仿真.仿真结果表明,在具有相同的跨阻增益条件下,基于0.18μm CMOS工艺下shunt-feedback型跨阻放大器无负阻抗电路时,其-3 dB带宽约为3.1 GHz,而具有负阻抗电路时,其-3dB带宽约为4.3GHz,两者相比带宽性能约提高了40%.该方案可以提高跨阻放大器带宽并避免因引入电感而增加芯片面积,在实践上具有一定的可行性.The study of transimpedance amplifier（TIA） with wide bandwidth and small scale become key issues in optical interconnection technology.The bandwidth of transimpedance amplifier based negative resistance circuit technology has been analyzed at theoreties and simulation in this paper.Simulation results show that,based under 0.18 μm CMOS technology and under the same transimpedance gain,the bandwidth of shunt-feedback amplifiers without negative impedance circuit is about 3.1 GHz,but with negative impedance circuit,the-3 dB bandwidth is about 4.3 GHz,the bandwidth has been enhanced by about 40%.The proposal can improve the bandwidth of transimpedance amplifier and avoid increasing the area of chip because of inductance,have the feasibility in practice.

关 键 词：光互连 跨阻放大器 负阻抗电路 带宽 

分 类 号：TN914[电子电信—通信与信息系统]