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Full-duplex (FD) communication has the potential to substantially increase the throughput in wireless networks. However, the benefits of FD are still not well understood. In this paper, we characterize the FD rate gains in both single-channel and multi-channel use cases. For the single-channel case, we quantify the rate gain as a function of the remaining self-interference (SI) and signal-to-noise...
We report in CPEM 2014 our effort towards SNS Josephson junction devices for the quantum voltage standard. SNS junction array device, with Nb as the superconductor material (S) and NbxSi1−x alloy as the barrier material (N), is fabricated and tested by NIM (National Institute of Metrology). The I–V characteristic curves of the junction arrays are measured and the experimental results are discussed.
Large scale single-crystalline graphene was achieved on copper foils with CH4 as the precursor with a sandwich method. With a PMMA-assisted method, single-crystalline graphene was transferred to the marked SiO2/Si substrate. Quantum Hall devices will be fabricated by E-beam lithography and metallization. And, quantum Hall effect will be measured.
Wafer-scale monolayer graphene film was synthesized on Cu foils by chemical vapor deposition in a 3-in thermal furnace. Graphene film was transferred to the surface of SiO2 (300 nm)/Si substrates using a polymer-assisted method. Hall bar structures were fabricated by lithography and E-beam deposition for the electrical property measurement. Perfect symmetrical ohmic resistance distribution was achieved...
We report in CPEM 2012 the preparation of the micromechanical cleavage (MC) and the chemical vapor deposition (CVD) graphene films and the fabrication of the quantum Hall resistance (QHR) devices on these films. Graphene films are on the SiO2/Si substrates. Spectroscopic Raman analysis indicates monolayer graphene films are obtained. Hall bar structures are formed on graphene films by e-beam lithography,...
In this paper, an adaptive predictive control algorithm was presented for a class nonlinear system. Linear equation between increment output and input of nonlinear system was acquired by differential mean value theorem and time-variable parameters were identified by leakage recursive least squares algorithm. On the basis of fact, recursive state-space equations were used as predictive model and controller...
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