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A 10Gb/s GaAs PHEMT High Gain Preamplifier for Optical Receivers

10Gb/s GaAs PHEMT高增益光接收机前置放大器(英文)
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摘要 A high gain cascade connected preamplifier for optical receivers is developed with 0.5μm GaAs PHEMT technology from the Nanjing Electronic Devices Institute. To begin with, the transimpedance amplifier has a -3dB bandwidth of 10GHz, with a small signal gain of around 9dB. The post-stage distributed amplifier （DA） has a -3dB bandwidth of close to 20GHz,with a small signal gain of around 12dB. As a whole,the cascade preamplifier has a measured small signal gain of 21.3dB and a transimpedance of 55.3dBΩ in a 50Ω system. With a higher signal-to-noise ratio than that of the TIA and a markedly improved waveform distortion compared with that of the DA, the measured output eye diagram for 10Gb/s NRZ pseudorandom binary sequence is clear and symmetric. 基于南京电子器件研究所0.5μm GaAs PHEMT工艺,研制了一种高增益级联式光接收机前置放大器.作为前级的跨阻抗放大器的-3dB带宽为10GHz,小信号增益为9dB;作为后级的分布式放大器的-3dB带宽接近20GHz,小信号增益为12dB;级联前置放大器小信号增益达21.3dB,跨阻增益为55.3dBΩ,在输入10Gb/s非归零伪随机二进制序列下,放大器输出眼图清晰、对称、信噪比优于跨阻放大器,分布放大器不能校正的输入波形失真也得到显著改善.
作者 焦世龙 杨先明 赵亮 李辉 陈镇龙 陈堂胜 邵凯 叶玉堂
机构地区 电子科技大学光电信息学院 南京电子器件研究所 单片集成电路与模块国家级重点实验室
出处 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2007年第12期1902-1911,共10页 半导体学报（英文版）
基金 国家自然科学基金(批准号:60277008) 单片集成电路与模块国家级重点实验室基金(批准号:51491050105DZ0201)资助项目~~
关键词 GaAs PHEMT optical receiver PREAMPLIFIER eye diagram CASCADE GaAs PHEMT 光接收机 前置放大器 眼图 级联
分类号 TN722.3 [电子电信—电路与系统]
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参考文献13

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共引文献6

Journal of Semiconductors
2007年 第12期

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