1. 电子科技大学光电信息学院,四川,成都,610054
2. 单片集成电路与模块 国家级重点实验室,江苏,南京,210016
3. 南京电子器件研究所,江苏,南京,210016
4. 电子科技大学光电信息学院四川成都,610054
5. 单片集成电路与模块 国家级重点实验室江苏南京,210016
6. 南京电子器件研究所江苏南京,210016
纸质出版:2007
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焦世龙, 陈堂胜, 蒋幼泉, 等. 20GHz宽带GaAs PHEMT分布式前置放大器[J]. 电子学报, 2007,35(5):955-958.
JIAO Shi-long, CHEN Tang-sheng, JIANG You-quan, et al. 20GHz Broadband GaAs PHEMT Distributed Preamplifier[J]. Acta Electronica Sinica, 2007, 35(5): 955-958.
采用0.5μm GaAs PHEMT工艺研制了一种光接收机分布式前置放大器.该放大器-3dB带宽接近20GHz
跨阻增益约46dBΩ;在50MHz~16GHz范围内
输入、输出电压驻波比(VSWR)均小于2;带内噪声系数在3.03~6.5dB之间
平均等效输入噪声电流密度约为14.6pA/ Hz ;在输入10Gb/s非归零(NRZ)伪随机二进制序列(PRBS)信号下
放大器输出眼图清晰
具有12ps的定时抖动和166mV峰峰电压.
A distributed amplifier (DA) basing on 0.5 μ m GaAs PHEMT process has been developed.The DA has a measured -3dB bandwidth close to 20GHz
with a transimpedance gain of 46dB Ω .Both the input and output voltage standing wave ratios (VSWR) are less than 2 in the range of 50MHz~16GHz.The noise figure (NF) varies from 3.03 to 6.5dB
whilst the average equivalent input noise current density is about 14.6pA/ Hz .With a timing jitter of 12ps and eye amplitude about 166mV
the measured output eye diagram for 10Gb/s NRZ pseudorandom binary sequence (PRBS) is clear and satisfying.
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