A
Ahmed ElShater
Researcher at Oregon State University
Publications - 16
Citations - 109
Ahmed ElShater is an academic researcher from Oregon State University. The author has contributed to research in topics: Amplifier & Switched capacitor. The author has an hindex of 5, co-authored 15 publications receiving 57 citations. Previous affiliations of Ahmed ElShater include MediaTek.
Papers
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Journal ArticleDOI
A 10-mW 16-b 15-MS/s Two-Step SAR ADC With 95-dB DR Using Dual-Deadzone Ring Amplifier
Ahmed ElShater,Praveen Kumar Venkatachala,Calvin Yoji Lee,Jason Muhlestein,Spencer Leuenberger,Kazuki Sobue,Koichi Hamashita,Un-Ku Moon +7 more
TL;DR: A two-step successive approximation (SAR) ADC achieving 91-dB signal-to-noise-and-distortion-ratio (SNDR) with 6-V differential input resulting in a low-frequency Schreier-figure-of-merit (FOM) of 179.8 dB at 15 MS/s is demonstrated.
Proceedings ArticleDOI
6.4 A 180mW 56Gb/s DSP-Based Transceiver for High Density IOs in Data Center Switches in 7nm FinFET Technology
Tamer Ali,Ramy Yousry,Henry Park,E-Hung Chen,Po-Shuan Weng,Yi-Chieh Huang,Chun-Cheng Liu,Chien-Hua Wu,Huang Shih-Hao,Chung-Shi Lin,Ke-Chung Wu,Kun-Hung Tsai,Kai-Wen Tan,Ahmed ElShater,Kuang-Ren Chen,Wei-Hao Tsai,Chen Huan-Sheng,Weiyu Leng,Mazen Soliman +18 more
TL;DR: A soaring amount of data transfer has been witnessed in recent years, and modern transceivers use PAM-4 instead of NRZ to improve BW efficiency, but this introduces substantial ISI, reduces peak-to-average-ratio, and imposes non-linearity constraints compared to NRZ modulation.
Proceedings ArticleDOI
Process Invariant Biasing of Ring Amplifiers Using Deadzone Regulation Circuit
Praveen Kumar Venkatachala,Spencer Leuenberger,Ahmed ElShater,Calvin Yoji Lee,Yang Xu,Bohui Xiao,Michael Oatman,Un-Ku Moon +7 more
TL;DR: A deadzone regulation circuit is proposed that utilizes a constant current source and a negative feedback loop to regulate the quiescent current of the output stage inverter across process corners.
Proceedings ArticleDOI
11.1 A 1.7pJ/b 112Gb/s XSR Transceiver for Intra-Package Communication in 7nm FinFET Technology
Ramy Yousry,E-Hung Chen,Yu-Ming Ying,Mohammed Abdul-Latif,Mohammad Elbadry,Ahmed ElShater,Tsz-Bin Liu,Joonyeong Lee,Dhinessh Ramachandran,Kaiz Wang,Chih-Hao Weng,Mau-Lin Wu,Tamer Ali +12 more
TL;DR: In this paper, the authors highlight the benefits of silicon photonic and ASIC co-integration, which allows for package throughput well beyond the electrical interface capability, and demonstrate the potential of multi-die technologies for high throughput switches.
Proceedings ArticleDOI
3.7 A 10mW 16b 15MS/s Two-Step SAR ADC with 95dB DR Using Dual-Deadzone Ring-Amplifier
Ahmed ElShater,Calvin Yoji Lee,Praveen Kumar Venkatachala,Jason Muhlestein,Spencer Leuenberger,Kazuki Sobue,Koichi Hamashita,Un-Ku Moon +7 more
TL;DR: A two-step SAR ADC utilizing a fully differential RAMP achieving 95dB DR and two techniques that contribute to the energy-efficiency of the ADC are presented: dynamic digital supply and DAC impedance-matching.