1,721,733 research outputs found
sj-docx-1-pie-10.1177_09544089231193586 - Supplemental material for Irreversibility analysis of hydromagnetic viscoelastic Ag-Al<sub>2</sub>O<sub>3</sub>/water hybrid nanofluid over a stretching sheet
No full textSupplemental material, sj-docx-1-pie-10.1177_09544089231193586 for Irreversibility analysis of hydromagnetic viscoelastic Ag-Al2O3/water hybrid nanofluid over a stretching sheet by Mahesh Kumar, Naresh Kumar N and Pranab Kumar Mondal in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
Dataset for: O-band Bi-doped fibre amplifiers: Present and Future
No full textDataset supports: Thipparapu, N. K., Sahu, J., & Payne, D. (2019). O-band Bi-doped fibre amplifiers: Present and future. Asian Journal of Physics, 28(7-9), 475-486.
This paper review the recent developments of the O-band Bi-doped fibre amplifiers. We also present the applications of Bi-doped fibre amplifiers and future prospects.</span
sj-pdf-1-ajs-10.1177_03635465231180323 – Supplemental material for Efficacy and Safety of Stempeucel in Osteoarthritis of the Knee
No full textSupplemental material, sj-pdf-1-ajs-10.1177_03635465231180323 for Efficacy and Safety of Stempeucel in Osteoarthritis of the Knee by Pawan Kumar Gupta, Sunil Maheshwari, Joe Joseph Cherian, Vijay Goni, Arun Kumar Sharma, Sujith Kumar Tripathy, Keerthi Talari, Vivek Pandey, Parag Kantilal Sancheti, Saurabh Singh, Syamasis Bandyopadhyay, Naresh Shetty, Surendra Umesh Kamath, Purohit Sharad Prahaldbhai, Jijy Abraham, Suresh Kannan, Samatha Bhat, Shivashankar Parshuram, Vinayaka Shahavi, Akhilesh Sharma, Nikhil N. Verma and Uday Kumar in The American Journal of Sports Medicine</p
Clock multiplication techniques for high-speed I/Os
Get PDFGeneration of a low-jitter, high-frequency clock from a low-frequency reference clock using classical analog phase-locked loops (PLLs) requires a large loop filter capacitor and power hungry oscillator. Digital PLLs can help reduce area but their jitter performance is severely degraded by quantization error. In this dissertation different clock multiplication techniques have been explored that can be suitable for high-speed wireline systems. With the emphasis on ring oscillator based architecture using cascaded stages, three possible architectures are explored.
First, a scrambling TDC (STDC) is presented to improve deterministic jitter (DJ) performance when used with a low-frequency reference clock. A cascaded architecture with digital multiplying delay locked loop as the first stage and hybrid analog/digital PLL as the second stage is used to achieve low random jitter in a power efficient manner. Fabricated in a 90nm CMOS process, the prototype frequency synthesizer consumes 4.76mW power from a 1.0V supply and generates 160MHz and 2.56 GHz output clocks from a 1.25MHz crystal reference frequency. The long-term absolute jitter of the 60MHz digital MDLL and 2.56 GHz digital PLL outputs are 2.4 psrms and 4.18 psrms, while the peak-to-peak jitter is 22.1 ps and 35.2 ps, respectively. The proposed frequency synthesizer occupies an active die area of 0.16mm2 and achieves power efficiency of 1.86 mW/GHz.
Second, a hybrid phase/current-mode phase interpolator (HPC-PI) is presented to improve phase noise performance of ring oscillator-based fractional-N PLLs. The proposed HPC-PI alleviates the bandwidth trade-off between VCO phase noise suppression and ΔΣ quantization noise suppression. By combining the phase detection and interpolation functions into an XOR phase detector/interpolator (XOR PD-PI) block, accurate quantization error cancellation is achieved without using calibration. Use of a digital MDLL in front of the fractional-N PLL helps in alleviating the bandwidth limitation due to reference frequency and enables bandwidth extension even further. The extended bandwidth helps in suppressing the ring-VCO phase noise and lowering the in-band noise floor. Fabricated in 65nm CMOS process, the prototype generates fractional frequencies from 4.25 to 4.75 GHz, with an in-band phase noise floor of -104 dBc/Hz and 1.5 psrms integrated jitter. The clock multiplier achieves power efficiency of 2.4mW/GHz and FoM of -225.8 dB.
Finally, an efficient clock generation, recovery, and distribution techniques for flexible-rate transceivers are presented. Using a fixed-frequency low-jitter clock provided by an integer-N PLL, fractional frequencies are generated/recovered locally using multi-phase fractional clock multipliers. Fabricated in a 65nm CMOS, the prototype transceiver can be programmed to operate at any rate from 3-to-10 Gb/s. At 10 Gb/s, integrated jitter of the Tx output and recovered clock is 360 fsrms and 758 fsrms, respectively.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-05-01The student, Romesh Kumar Nandwana, accepted the attached license on 2017-04-17 at 15:09.The student, Romesh Kumar Nandwana, submitted this Dissertation for approval on 2017-04-17 at 15:42.This Dissertation was approved for publication on 2017-04-19 at 08:46.DSpace SAF Submission Ingestion Package generated from Vireo submission #10816 on 2017-08-10 at 15:05:48Made available in DSpace on 2017-08-10T20:32:59Z (GMT). No. of bitstreams: 3
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Previous issue date: 2017-04-19Embargo set by: Colleen Fallaw for item 102771
Lift date: 2019-08-10T21:27:21Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 102771 on 2019-08-11T09:15:10Z
Coincident electron channeling and cathodoluminescence studies of threading dislocations in GaN
No full textWe combine two scanning electron microscopy techniques to investigate the influence of dislocations on the light emission from nitride semiconductors. Combining electron channeling contrast imaging and cathodoluminescence imaging enables both the structural and luminescence properties of a sample to be investigated without structural damage to the sample. The electron channeling contrast image is very sensitive to distortions of the crystal lattice, resulting in individual threading dislocations appearing as spots with black–white contrast. Dislocations giving rise to nonradiative recombination are observed as black spots in the cathodoluminescence image. Comparison of the images from exactly the same micron-scale region of a sample demonstrates a one-to-one correlation between the presence of single threading dislocations and resolved dark spots in the cathodoluminescence image. In addition, we have also obtained an atomic force microscopy image from the same region of the sample, which confirms that both pure edge dislocations and those with a screw component (i.e., screw and mixed dislocations) act as nonradiative recombination centers for the Si-doped c-plane GaN thin film investigated
Dataset for WDM transmission with in-line amplification at 1.3μm using a Bi-doped fibre amplifier
No full textDataset supports:
Taengnoi, N. et al (2019). WDM transmission with in-line amplification at 1.3μm using a Bi-doped fibre amplifier. Journal of Lightwave Technology. </span
Dataset for Bi-doped Fiber Amplifiers and Lasers: invited
No full textDataset supports: Thipparapu, N. K., Wang, Y., Wang, S., Umnikov, A. A., Barua, P., & Sahu, J. K. (2019). Bi-doped fiber amplifiers and lasers [Invited]. Optical Materials Express, 9(6), 2446-2465.</span
Dataset for Bismuth-doped all-fiber mode-locked laser operating at 1340 nm
No full textDataset supporting:
Thipparapu, N. K., Guo, C., Barua, P., Umnikov, A., Taranta, A., & Sahu, J. (2017). Bismuth-doped all-fiber mode-locked laser operating at 1340 nm. Optics Letters, 42(24).</span
Dataset: All fiber tunable Bi-doped laser operating in the O-band from 1317-1375nm
No full textData supports the paper:
Thipparapu, N. K., Wang, S., Umnikov, A. A., Barua, P., & Sahu, J. (2017). All-fiber Bi-doped laser continuously tunable from 1317-1375nm. In All-fiber Bi-doped laser continuously tunable from 1317-1375nm DOI: https://doi.org/10.1109/CLEOE-EQEC.2019.8872654</span
Dataset for High gain Bi-doped all fiber amplifier for O-band DWDM optical fiber communication
No full textData supporting the paper:
Thipparapu, N. K., Wang, Y., Umnikov, A. A., Barua, P., Richardson, D., & Sahu, J. (2019). High gain Bi-doped all fiber amplifier for O-band DWDM optical fiber communication. In Optical Fiber Communication Conference (OFC) 2019 [8696672] (OSA Technical Digest; No. paper M1J.5). Rochester: OSA. DOI: 10.1364/OFC.2019.M1J.5</span
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