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| 10Gb/s GaAs PHEMT高增益光接收机前置放大器 | |
| 引用本文： | 焦世龙,杨先明,赵亮,李辉,陈镇龙,陈堂胜,邵凯,叶玉堂.10Gb/s GaAs PHEMT高增益光接收机前置放大器[J].半导体学报,2007,28(12). |
| 作者姓名： | 焦世龙 杨先明 赵亮 李辉 陈镇龙 陈堂胜 邵凯 叶玉堂 |
| 作者单位： | 1. 电子科技大学光电信息学院,成都,610054;单片集成电路与模块国家级重点实验室,南京,210016 2. 电子科技大学光电信息学院,成都,610054 3. 南京电子器件研究所,南京,210016 4. 单片集成电路与模块国家级重点实验室,南京,210016;南京电子器件研究所,南京,210016 |
| 基金项目： | 国家自然科学基金，国家重点实验室基金 |
| 摘 要： | 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. |
| 关 键 词： | GaAs PHEMT 光接收机 前置放大器 眼图 级联 |
A 10Gb/s GaAs PHEMT High Gain Preamplifier for Optical Receivers |
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| Jiao Shilong,Yang Xianming,Zhao Liang,Li Hui,Chen Zhenlong,Chen Tangsheng,Shao Kai,Ye Yutang.A 10Gb/s GaAs PHEMT High Gain Preamplifier for Optical Receivers[J].Chinese Journal of Semiconductors,2007,28(12). | |
| Authors: | Jiao Shilong Yang Xianming Zhao Liang Li Hui Chen Zhenlong Chen Tangsheng Shao Kai Ye Yutang |
| Abstract: | 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. |
| Keywords: | GaAs PHEMT optical receiver preamplifier eye diagram cascade |
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