Programmable Active Mirror: A Scalable Decentralized Router
Programmable Active Mirror: A Scalable Decentralized Router
复制标题
可编程主动镜像：可扩展的分散式路由器
DOI：
10.1109/tmtt.2020.3042516
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发表时间：
2021
影响因子：
4.3
通讯作者：
A. Hajimiri
中科院分区：
文献类型：
--
作者：
Austin C. Fikes;P. Khial;Samir Nooshabadi;A. Hajimiri
这项工作提出并演示了可扩展的路由器阵列，其消除了传统阵列的内部集中化、解锁了可扩展性以及由不共享公共时序基准的空间分离元件组成的系统的可能性。文中介绍了各种体系结构，并讨论了它们的具体权衡。通过分析、仿真和测量，评估了一般操作、转向能力、信号和噪声考虑以及定时控制的优势。研制了一种单元级的射频集成电路(RFIC)，并用于演示了一个四单元的25 GHz原型路由器。射频集成电路的可编程真时延控制用于纠正路径长度差引起的码间干扰，并将重新路由的270-Mb/S-QAM星座从完全加扰状态改进为4%均方根(−)的均方根(EVM)。原型可扩展路由器的并发双波束能力通过在自由空间电磁设置中同时将24.9 GHz和25 GHz的两个全功率波束转向两个不同方向来演示。
This work proposes and demonstrates the scalable router array that eliminates the internal centralization of conventional arrays, unlocking scalability, and the potential for a system composed of spatially separated elements that do not share a common timing reference. Architectural variations are presented, and their specific tradeoffs are discussed. The general operation, steering capabilities, signal and noise considerations, and timing control advantages are evaluated through analysis, simulation, and measurements. An element-level CMOS radio frequency integrated circuit (RFIC) is developed and used to demonstrate a four-element 25 GHz prototype router. The RFIC’s programmable true time delay (TTD) control is used to correct path-length-difference-induced intersymbol interference (ISI) and improve a rerouted 270-Mb/s 64-QAM constellation from a completely scrambled state to an EVM of 4% rms (−28 dB). The prototype scalable router’s concurrent dual-beam capabilities are demonstrated by simultaneously steering two full power beams at 24.9 and 25 GHz in two different directions in a free-space electromagnetic setup.
大阵列波束形成器的集成离散时延补偿技术
DOI：
10.1109/tcsi.2019.2926309
发表时间：
2019
期刊：
IEEE Transactions on Circuits and Systems I: Regular Papers
影响因子：
--
作者：
Ghaderi, Erfan;Sivadhasan Ramani, Ajith;Rahimi, Arya A.;Heo, Deukhyoun;Shekhar, Sudip;Gupta, Subhanshu
通讯作者：
Gupta, Subhanshu