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A highly integrated monolithic isolated gate driver with on-chip transformer is proposed. The main idea is to have an on-chip high-frequency voltage controlled oscillator (VCO) to provide a GHz carrier. Therefore, the on-chip transformer size could be shrunken to dimensions less than 1 mm2. Two on-chip transformer test structures are presented with dimension of 1020 µm × 860 µm. The stacked transformer...
In this study, we have inserted the graphene oxide (GO) in the metal/insulator/semiconductor tunneling diodes. The graphene oxide devices reveal the better stability as compared with the control devices. At a small positive bias, different control devices have different magnitude of photocurrents, while photocurrents of GO devices have close magnitude. At 2 V, the photocurrent density of the GO device...
A novel material CaCu3Ti4O12 (CCTO) for resistive random access memory (RRAM) application was prepared by sol-gel spin coating method. Our previous studies indicated that the CCTO possesses stable resistive switching behavior. In this work, the effects of the top electrode (TE) material on the resistive switching characteristics of CCTO films are investigated. It indicates the work function of the...
In this paper, a micromechanical resonator utilizing single crystal Si and CMOS ASIC is presented. First, the critical parameters are optimized by theoretical calculation and fine tuned by finite-element-analysis (FEM). Then, SOG-bulk micromachining and deep reactive ion etching (DRIE) are adopted to fabricate the resonator as well as a glass wafer is used as the substrate to support the device, metal...
At 24 GHz, communication range of 10 m is possible using on-chip antennas. Antenna efficiency of 25% is achieved by thinning the substrate to ~50 ??m. At 5.8 GHz, using a pair of 6-mm long monopoles, communication range of more than 30 m can be achieved. On-chip antennas can be integrated with RF circuits in CMOS for general purpose communication. At frequencies above ~200 GHz, it becomes practical...
To enhance the detection ability of the Poisson GWMA control chart, this work uses the composite Shewhart-Poisson GWMA control chart to monitor Poisson counts to detect small shifts more quickly. The Shewhart-Poisson GWMA control chart uses numerical simulation to determine average run lengths of various process mean shifts under adjusted parameters. Consequently, adding sensitizing rules increases...
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