The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Predicting and optimizing the impact of simultaneous switching noise (SSN) on timing and voltage margins in production environments require an accurate and robust modelling methodology. Such a methodology requires high fidelity representing of the physical structures at the chip, package and board level. Here, a modified merge bit approach is used to generate an accurate current profile of the full-chip...
Femur fracture is one of the common diseases in the elderly. In this paper, an automatic and efficient classification method of femoral pertrochanteric fractures is proposed based on image segmentation techniques. The types of femoral pertrochanteric fracture are defined firstly according to the difference of fracture parts. To reduce the computational complexity, only four directions images are used...
Advanced memory technologies such as DDR4 and LPDDR4 are able to receive and transmit huge amount of data in faster and more efficient ways than ever before. At the same time, reducing power noise and designing dense traces become a challenging part of the design processes. In particular, high signal density on a package naturally restricts the resources for robust power delivery when keeping the...
This paper describes the return loss characterization and analysis of a high-speed serial interface with T-coils at the transmitter and receiver. Today's high-speed links utilize equalization to mitigate channel loss and dispersion. In addition, T-coil networks are used at inputs and outputs to improve impedance matching and to enhance the receiver and transmitter bandwidth. To guarantee the transceiver...
With the rapid development of information technology, the concept of information management has been gradually accepted by the majority, and enterprise information management systems have become mature in many foreign countries. However, limited by some specific conditions, its development in our country is just beginning. At present the success rate of enterprise information management system is...
With the development of storage technology, the increase of the storage quantity and diverse forms, virtual storage has become a most adaptable technology in the current environment. It helps users to provide interactive procedure in the heterogeneous environment, maintain the operating system continuity, simplify the storage management complexity and reduce the storage cost. Virtual storage is to...
Design of robust power supply system to support DDR4 interface operating at 2400Mbps and beyond requires full consideration of supply noise impact on timing jitter in the system. Using relative jitter for DQ vs DQS and CA vs CK is critical and absolute jitter for CK is critical in optimizing the power supply system and deriving supply noise mitigation strategy.
A 2.5-dimensional method using the PDE package of the commercial finite element software COMSOL Multiphysics is developed to simulate wave propagation in a borehole. The computation is conducted in the frequency wave-number domain. A convolutional perfectly matched layer is implemented to eliminate the reflections from artificial truncation boundaries. Waveforms obtained in time domain are in good...
Today's high-speed interface designers are facing increasingly complex challenges imposed by the requirements of high performance, optimal power efficiency, and often by tight 3-D integration, such as in package-on-package (PoP) systems. Answers to many difficult, yet critical questions, need to be found by measurement inside the high-speed interfaces. What is the signal quality after the package...
The power integrity characterization of a high-capacity, compute-server memory system operating at 4.8Gbps-per-link is presented. The design robustness of the low-swing, single-ended signaling is verified as the system has excellent immunity to the noise from simultaneously switching outputs (SSO) and a low power-supply-induced jitter (PSIJ) at the primary chip-package resonance frequency.
This paper presents signal and power integrity analysis of a double-sided flip-chip package. A memory controller is attached on one side of the organic substrate, and 3D-stacked, disaggregated memory chips, integrated with through silicon vias (TSVs), are connected on the opposite side. The signaling path of this 3D memory system consists of a short channel consisting of wafer-level redistribution...
An innovated low-power memory interface with data rate up to 4.3Gbps presents unique challenges to power integrity (PI) design and verification. While benign to power saving, the employed low-power design techniques, such as power state management, low-power clocking circuit, and on-chip voltage regulator, make the interface more susceptible to supply noise, particularly, in terms of its jitter impact...
A memory system that meets the bandwidth, power efficiency, and capacity needs of future computing systems is presented in this paper. A 6.4 Gbps single-ended DDR memory interface for the controller and the DRAM was designed in a 28-nm CMOS process for a main memory system with dual-rank DIMMs. The architecture features a novel clocking scheme, per-pin timing adjustment, dynamic point-to-point signaling...
In this paper, a coordinated control problem of ship power system with SVC is addressed based on Hamilton function method. Firstly, a sufficient analysis for nonlinear modeling of Marine Diesel Engine Generator, SVC modeling, and propulsive motor load coupled nonlinear dynamic characteristics, secondly Hamilton realization of the modeling of the generator is obtained by a present state feedback technique,...
The stability problem of a ship power system is primary and basic for its safe operation. In order to improve the robust stability of diesel engines of the ship power station. a coordination control method for excitation and speed regulation is proposed based on L2-gain robust control theory. Firstly, a five-order double inputs and robust nonlinear mathematic model is established, which includes unknown...
We report on the mode-locked rectangular pulse operating in dissipative soliton resonance (DSR) region in an anomalous-dispersion figure-eight fiber laser. The results demonstrate that the formation of DSR pulse is independent of mode-locking techniques.
Analyzing power supply noise characteristics and predicting its jitter impact is critical in designing the 12.8Gbps single-ended memory interface achieving better than 5mW/Gbps energy efficiency. The clocking circuit jitter performance is characterized by jitter sensitivity. The power supply noise induced jitter (PSIJ) is derived by combining the noise spectrum and sensitivity profile. The final PSIJ...
Based on linear statistical relationships between components of SST gradients and wind stress variations, a high-resolution methodology is presented to retrieve Gulf Stream thermal front features using only variations in pixel-scale features of the SAR-derived wind stress divergence and curl fields, representing a significant improvement in methodology. It is important to remove small-scale features...
Beamsteering for a phased array antenna generally causes the sidelobe level deterioration due to a variety of random and spatially correlated errors. Conventional array error analysis method is based on probability central limit theorem, and can be calculated by the probability statistic approach. In the paper, this reaserch presents a new estimation method of the phased array patterns by using numerical...
Rectifier units is widely used in electrochemical and the metallurgical industry,stability and reliability are required.This paper studied the fault classification and diagnosis method of the bridge 6-pulse waveform controlled rectifier circuit based on Support Vector Machines.All the faults in thyristors were analyzed, the fault classification method according to the rectifier aberrant voltage waveforms...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.