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A 0.13µm 8Mb CuxSiyO resistive memory test macro with 20F2 cell size is developed based on logic process for the first time. Smart and adaptive assist write and read circuit are proposed and verified in order to fix yield and power consumption issues from large write speed and high temperature resistance variation. SAWM (self-adaptive write mode) helps to enlarge Roff/Ron window from 8X to 24X at...
This paper deals with the 3D reconstruction of sparse data in X-ray rotational imaging. Due to the cardiac motion, the number of available projections for this reconstruction is equal to four, which leads to a strongly under-sampled reconstruction problem. We address thus this illness problem through a regularized iterative method. The whole algorithm is divided into two steps. Firstly, a minimal...
With rapid development of lighting emitting diode (LED) market, more people are focusing on reliability testing method of LED luminaries system. However, it is difficult to use traditional reliability testing method for electronic products to assess LED luminaries with high reliability and long life. In this paper, reliability testing methods applied on LED, LED luminaries and other fields are reviewed...
This paper presents design and implementation of multiple maximum power point trackers (MPPTs) with wide input voltage variation for dc distribution systems. The topology of the proposed MPPT combines buck and boost converters to accommodate PV input voltage from 0 V to 850 V. The control algorithm for tracking maximum power points is based on a “perturbation and observation” method. The proposed...
Power regulation system (PRS) is necessary to mitigate the power fluctuation and stabilize the voltage for smart grid. This paper proposes a method to balance the DC link voltage of H-bridge cascade PRS. The unbalance of the PRS is mainly due to the different input/output currents in each battery bank units. The balancing control is based on the negative sequence voltage injection concept. The control...
CdZnTe (CZT) and CdMnTe (CMT) materials come into the spotlight for room-temperature semiconductor detectors. Nonethelss, both materials still have limitations for the production of economical, uniform, and large-volume devices due to the zinc (Zn) segregation in CZT and manganese purity in CMT. The effective segregation coefficient of Zn in the CdTe host is nearly 1.3, so about 5–6% of Zn deviation...
One interesting and challenging BGA solder ball cracked issue occurred at certain electronic production line. This paper is expected to carry out a detail investigation and improvement plan on failure mechanism, by combining some experiment methods, such as SEM/EDX, pin pull test, cross section, dye & pry etc. And also environment test thermal cycling is involved in to qualify the improved products...
Cable-driven parallel manipulators (CDPMs) are a special class of parallel manipulators that are driven by cables instead of rigid links. Cables have unilateral driving properties so that redundant actuation is required to maintain positive cable tensions. Due to the actuation redundancy, there exists an infinite number of tension solutions for every CDPM's pose. In this paper, a gradient projection...
The aim of this article is to advance the discussion of use-misuse cases as a tool for information system security risk assessment during system development. We closely examined the limitations and came up with some basic pointers that needed to be addressed in order to overcome the limitations. We proposed some solutions to these lacks and present a framework and modeling process to achieve the solutions...
A new type of dual magnetically and electrically tunable bandpass filter with a YIG film and with a YIG/PZN-PT multiferroic heterostructure have been designed, fabricated and characterized. The resonant frequency of the BPF can be tuned via a bias magnetic field, and a large tunability of the operation frequency of 190 ∼ 840 MHz with relatively small bias fields of 50 ∼ 250 Oe. A clear E-field induced...
For doubly-fed induction generator (DFIG)-based wind power systems, when a grid voltage dip happens, a large electromotive force (EMF) will be induced in the rotor circuit. Without proper control for protection, over-current will appear in the rotor circuit, and it may lead to the destruction of the rotor-side converter (RSC). To mitigate this problem, a new low voltage ride-through (LVRT) control...
An isolated bi-directional full-bridge soft-switching dc-dc converter with high conversion ratio, high output power, soft start-up and soft-switching capability for battery charging/discharging is proposed in this paper. The use of an active flyback and two passive capacitor-diode snubbers can alleviate the voltage spike caused by the current difference between the leakage inductance of the transformer...
We discuss the fabrication and characterization of a new type of 80-µm large-core optical fiber. 10-Gb/s bit-error-rate measurements are performed showing an error-free 100-m connection link can be achieved with negligible power penalty.
Two different CS-SSB modulators based on Mach-Zehnder structure used in carrier-distributed long-reach passive optical networks are investigated and compared. The Rayleigh-backscattering beat noise tolerance and transmission performance are also discussed.
This paper presents the advanced I/O device design for 32 nm Hi-K Metal Gate technology with multi-high operation voltages. Process optimization work is done on the I/O composite gate dielectric stack to improve TDDB Vmax. By using advanced junction engineering, 3.3 V device Isubmax is reduce by 30-40% without Ion degradation based on TCAD simulation guideline. At the same time, 2.5 V device drive...
High-performance concrete (HPC) is a very complex material and hence very hard to predict its compressive strength. This paper deals with building a regression model for predicting concrete's compressive strength. First of all, eight process variables are identified as determinants of Concrete Compressive Strength (CCS). These variables are Cement, Blast Furnace Slag, Fly Ash, Water, Superplasticizer,...
Robots with hyper degrees of freedom motion are highly flexible, hence they are the ideal candidates to work in highly-confined spaces. These dexterous robotic arms are classified into two categories, i.e., discrete and continuum. As the weight of the discrete robots is a major concern, this paper discusses about the possibility of reducing their weight by replacing the heavy actuators with light...
MEMS (Micro Electro-Mechanical System) is a technology that offers significant advantages over various microscopic elecromechanical devices. In the field of MEMS products, pressure sensor represents a considerably mature technology and has been extensively used in a variety of applications. Nevertheless, packaging is a key issue among the processes of MEMS manufacture due to the specialty and complexity...
This paper describes an active and reactive power regulating system based on a cascaded converter. The system is intended for power leveling of renewable energy sources, as well as for improving power quality and reliability of a power distribution system. The active/reactive power control and the DC side voltage control concentrated in this paper are indispensable for the system's proper operation...
As the current-carrying capability of a copper line is reduced due to interconnect dimension shrinkage, self-aligned CoWP metal-cap has been reported to be helpful to improve degraded electromigration (EM) reliability. However, adoption of the metal cap in general further exacerbates the already problematic low-k dielectric TDDB reliability at 32nm and beyond. This paper provides a comprehensive study...
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