Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Amr Amin Hafez"'
Autor:
Anand Vasani, Henry Park, Bo Zhang, Afshin Momtaz, Tamer Ali, Lakshmi Rao, Amr Amin Hafez, Ullas Singh, Arvindh Iyer, Mohammed Abdul-Latif, Zhi Huang, Namik Kocaman, Yang Liu
Publikováno v:
IEEE Journal of Solid-State Circuits. 51:881-892
This paper presents a quad-lane serial transceiver that supports virtually all data center communication standards around 8.5–13 Gbps, implemented in 28 nm CMOS technology. The transmitter consists of 20:2 mux followed by a half-rate source-series
Publikováno v:
IEEE Journal of Solid-State Circuits. 50:763-775
A power-efficient transmitter is proposed using a multiphase serializer, multiphase dividers using injection-locked oscillators, and a high-speed multiplexing structure to relax the timing constraints. With this architecture, bit times near 1 FO-4 ga
Publikováno v:
IEEE Journal of Solid-State Circuits. 48:2681-2692
This paper presents a digital-to-phase converter (DPC) with 8-bits of resolution and a wide frequency range for the input/output clocks. A harmonic rejection (HR) filter is introduced to improve linearity across a frequency range of 0.1-1.5 GHz. Inst
Autor:
Chih-Kong Ken Yang, Amr Amin Hafez
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 60:1712-1725
Frequency dividers can be modeled as superharmonic injection-locked oscillators. We propose a general model for ring-oscillator based dividers. Theoretically, the maximum division frequency of a frequency divider can be decoupled from the number of p
Autor:
Amr Amin Hafez, David Murphy, A. Mirzaei, Mau-Chung Frank Chang, Hooman Darabi, Mohyee Mikhemar, Asad A. Abidi
Publikováno v:
IEEE Journal of Solid-State Circuits. 47:2943-2963
A new wideband receiver architecture is proposed that employs two separate passive-mixer-based downconversion paths, which enables noise cancelling, but avoids voltage gain at blocker frequencies. This approach significantly relaxes the trade-off bet
Autor:
Dejan Markovic, Chih-Kong Ken Yang, Yuta Toriyama, Fengbo Ren, Richard Dorrance, Amr Amin Hafez
Publikováno v:
IEEE Transactions on Electron Devices. 59:878-887
We present a design-space feasibility region, as a function of magnetic tunnel junction (MTJ) characteristics and target memory specifications, to explore the design margin of a one-transistor-one-magnetic-tunnel-junction (1T-1MTJ) memory cell for sp
Autor:
Chih-Kong Ken Yang, Amr Amin Hafez
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 58:2332-2345
Multipath ring oscillators have been used to generate multiple clock phases and higher oscillation frequencies. This paper presents a modified linear analysis to find an accurate expression for the oscillation frequency and phase noise. The analysis
Autor:
Henry Park, Yang Liu, Tamer Ali, Bo Zhang, Mohammed Abdul-Latif, Amr Amin Hafez, Namik Kocaman, Anand Vasani, Ullas Singh, Zhi Huang, Afshin Momtaz, Lakshmi Rao, Arvindh Iyer
Publikováno v:
VLSIC
This paper presents a quad-lane serial link that supports virtually all data center system-side and line-side communications standards from 8.5–13 Gbps, implemented in 28 nm CMOS. The Tx is series source terminated with a 4-tap FFE. Its swing range
Publikováno v:
ISSCC
Serial-link transmitters are widely used in applications like optical transceivers and multi-gigabit Ethernet. At tens of Gb/s, the operating range of bit-rates is narrow; limited by the speed of the multiplexing and the setup and hold time constrain
Publikováno v:
2012 IEEE Asian Solid State Circuits Conference (A-SSCC).
A phase-locked loop providing multiphase clocks at 12-GHz and its subdivisions is presented. A quadrature VCO with low supply sensitivity is used. Frequency division is achieved using superharmonic injection-locked multipath ring oscillators to exten