The Experts below are selected from a list of 5838 Experts worldwide ranked by ideXlab platform

Chris H Kim - One of the best experts on this subject based on the ideXlab platform.

Ramesh Harjani - One of the best experts on this subject based on the ideXlab platform.

  • design and implementation of active decoupling capacitor circuits for power supply regulation in digital ics
    IEEE Transactions on Very Large Scale Integration Systems, 2009
    Co-Authors: Jie Gu, Ramesh Harjani
    Abstract:

    Control of on-chip power supply Noise has become a major challenge for continuous scaling of CMOS technology. Conventional passive decoupling capacitors (decaps) exhibit significant area and leakage penalties. To improve the efficiency of power supply regulation, this paper proposes a distributed active decap circuit for use in digital integrated circuits (ICs). The proposed design uses an operational amplifier to boost the performance of conventional decaps. Simulations proved its enhanced decoupling effect in comparison with passive decaps. The proposed active decap also shows advantages in providing additional damping to the on-chip resonant Noise. To verify the performance from the proposed circuit, a 0.18-mu m test chip with on-chip Noise Generators and sensors has been fabricated. Measurements show a 4-11times boost in decap value over conventional passive decaps for frequencies up to 1 GHz with a total area saving of 40%. Local supply Noise distribution and decap gating capability were also examined from the test chip.

  • distributed active decoupling capacitors for on chip supply Noise cancellation in digital vlsi circuits
    Symposium on VLSI Circuits, 2006
    Co-Authors: Ramesh Harjani, Chris H Kim
    Abstract:

    A distributed active decoupling capacitor (decap) circuit is proposed to suppress the on-chip power supply Noise in digital VLSI circuits. Effectiveness on suppressing local supply Noise is verified from a 0.18mum test chip using multiple on-chip supply Noise Generators and supply Noise sensors. Measurements show 4-11times boost in decap value over conventional passive decaps for frequencies up to 1 Hz. Decap area reduction of 40% is achieved

Lawrence Kamei - One of the best experts on this subject based on the ideXlab platform.

  • Construction and Activation of Rockwell International's Acoustic Test Chamber
    Journal of Environmental Sciences-china, 2006
    Co-Authors: Lawrence Kamei
    Abstract:

    Rockwell International's Satellite Systems Division in Seal Beach recently completed a plant modernization program to support the mass production of 28 satellites. The modernization program consisted of multiple satellite integration and test stations and environmental test facilities, which included a high intensity acoustic test chamber, contained within a 4,645 m2 (50,000 ft2) cleanroom. This paper discusses the design philosophy, construction, integration, and activation of the high intensity acoustic test chamber for production acceptance testing of satellites.The 906m3 (32,000 ft3) acoustic test cell consists of a steel reinforced concrete chamber with six electropneumatic Noise Generators. One of the innovative features of the chamber is a unique quarter hom assembly that acoustically couples the Noise Generators to the chamber. Design concepts, model testing, and evaluation results are presented in the paper. Considerations such as nitrogen versus compressed air source, digital closed loop spectru...

Salvatore Pennisi - One of the best experts on this subject based on the ideXlab platform.

  • Current-feedback amplifiers versus voltage operational amplifiers
    IEEE Transactions on Circuits and Systems I-regular Papers, 2001
    Co-Authors: Gaetano Palumbo, Salvatore Pennisi
    Abstract:

    This paper compares the main performance parameters of the current feedback opamp (CFOA) with those of a conventional voltage opamp (VOA). To make the comparison effective, a folded cascode VOA is considered (which is characterized by similar features and topology) and the same power consumption was assumed for both amplifiers. The work confirms that the CFOA can provide higher bandwidth, albeit at the expense of reduced loop gain. Noise performance is also analyzed. Input-referred Noise Generators are determined and some peculiar CFOA features, having no equivalence in conventional opamps, have been highlighted. It is shown that the CFOA has slightly lower Noise voltage, but a larger Noise current. Simulations are given which are in very good agreement with expected results.

Nikitenko D. A. - One of the best experts on this subject based on the ideXlab platform.

  • Comparative analysis of the Noise Generators technical characteristics
    БГУИР РБ, 2021
    Co-Authors: Никитенко, Д. А., Nikitenko D. A.
    Abstract:

    Приведены результаты расчетов комплексных показателей качества генераторов шума, используемых для защиты информации. Представлена диаграмма распределения комплексных показателей качества, по которой может осуществляется выбор наиболее подходящей модели генератора с целью создания оптимальной защиты объекта. The results of calculations of complex quality indicators of Noise Generators used to protect information are given. A diagram of the distribution of complex quality indicators is presented, according to which the most suitable generator model can be selected in order to create the optimal protection of the object

  • Evaluation of quality level of Noise Generators for protection of information against leakage through acousto-conversion channels
    Vintseslav Navozni Чешская Республика, 2021
    Co-Authors: Алефиренко, В. М., Никитенко, Д. А., Alefirenko V. M., Nikitenko D. A.
    Abstract:

    Приведены результаты расчетов комплексных показателей качества генераторов шума, используемых для защиты информации от утечки по акустопреобразовательным каналам. Представлена диаграмма распределения комплексных показателей качества, по которой может осуществляется выбор наиболее подходящей модели генератора с целью создания оптимальной защиты объекта. The results of calculations of complex quality indicators of Noise Generators used to protect information from leakage through acousto-conversion channels are given. A diagram of the distribution of complex quality indicators is presented, according to which the most suitable generator model can be selected in order to create the optimal protection of the object