A 24-Gsps 3-Bit Nyquist ADC Using InP HBTs for DSP-Based Electronic Dispersion Compensation
A 24-Gsps 3-Bit Nyquist ADC Using InP HBTs for DSP-Based Electronic Dispersion Compensation
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使用 InP HBT 进行基于 DSP 的电子色散补偿的 24Gsps 3 位奈奎斯特 ADC
DOI：
10.1093/ietele/e88-c.6.1225
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
M. Muraguchi
中科院分区：
文献类型：
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作者：
H. Nosaka;Makoto Nakamura;K. Sano;M. Ida;K. Kurishima;T. Shibata;M. Tokumitsu;M. Muraguchi
使用 InP HBT 开发了用于电子色散补偿 (EDC) 的 3 位闪存模数转换器 (ADC)。奈奎斯特操作已确认高达 24 Gsps，可实现 10 Gbit/s 不归零 (NRZ) 信号的过采样采集。对于低输入频率，ADC 还可以高达 37 Gsps 的速度运行。为了减少孔径抖动并实现超过 7 GHz 的宽带，所有前置放大器的模拟输入信号和所有锁存比较器的时钟信号均通过共面传输线以行波形式提供。 EDC 通过捕获 10 Gbit/s 伪随机比特流 (PRBS) 进行演示，其中波形因偏振模色散 (PMD) 而降级。通过使用捕获的数据，我们确认横向滤波器的计算可以减轻 PMD。
A 3-bit flash analog-to-digital converter (ADC) for electronic dispersion compensation (EDC) was developed using InP HBTs. Nyquist operation was confirmed up to 24 Gsps, which enables oversampling acquisition for 10 Gbit/s non-return-to-zero (NRZ) signals. The ADC can also be operated at up to 37 Gsps for low input frequencies. To reduce aperture jitter and achieve a wide band of over 7 GHz, an analog input signal for all pre-amplifiers and a clock signal for all latched comparators are provided as traveling waves through coplanar transmission lines. EDC was demonstrated by capturing a 10-Gbit/s pseudo-random bit stream (PRBS) with the waveform degraded by polarization-mode dispersion (PMD). By using the captured data, we confirmed that a calculation of a transversal filter mitigates PMD.