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Dual-Photodiode Differential Receivers Achieving Double Photodetection Area for
本文提出两种双光电二极管差分光接收器,实现双倍光检测面积,支持千兆光无线通信。
2 Gb/s, BER 10^-9
双光电二极管光无线通信差分接收器跨阻放大器自适应消除
▸创新点1:双光电二极管差分光接收架构(系统创新) - 通过互补连接两个光电二极管,实现双倍光检测面积的同时保持接收器带宽,解决了单光束差分检测的难题,支持千兆比特级光无线通信。
▸创新点2:自适应直流光电流消除电路(电路创新) - 采用ADPC电路动态消除强光或不平衡入射光下的直流光电流,防止接收器饱和,显著提升了系统在非理想光照条件下的稳定性。
▸创新点3:低噪声分流反馈跨阻放大器(电路创新) - 提出基于差分对电流复用和交叉耦合电阻反馈的SF-TIA结构,将输入灵敏度提升至3.4 µApp(1.5 Gb/s时),较参考设计(10.4 µApp)降低67%,同时实现2 Gb/s数据传输。
▸创新点4:正电容反馈跨阻放大器(电路创新) - 作为对比方案,参考接收器采用正电容反馈技术优化TIA性能,在19.1 mW低功耗下仍实现2 Gb/s速率,为不同应用场景提供设计选择。
Abstract
This article presents two dual-photodiode (PD) dif-
ferential optical receivers that achieve double photodetection area
to support gigabit-per-second optical wireless communication
(OWC), while maintaining the receiver bandwidth. To enable
differential light detection with a single incident light beam,
a dual-PD OWC receiver architecture is proposed. In this
architecture, two PDs are connected to the receiver complemen-
tarily without sacrificing the receiver bandwidth, and meanwhile,
remain pro