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A Power MOSFET Idss failure case was studied by SIMS profiling that showed a deeper junction depth between the body/source. TCAD simulation was used to understand the mechanism of the failure.
This paper aims at the characteristics of reactive power optimization of the electric power system with the wind farm; proposing a new method for reactive power optimization on the entire power grid which uses the Parallel Immune Particle Swarm Optimization. It uses integer and real number hybrid encoding, improves the efficiency of compiling. And it combines the continuous and discrete particle swarm...
Electrical wire explosion is an effective method of nano-powder preparation. However the energy deposition process of fine wires under vacuum or low gas pressure circumstances is usually terminated prematurely due to the flashover along the surface of wires; therefore energy deposited into wires can be far less than the amount needed to fully vaporize them, which leads to quality reduction. In this...
Detection of image features is an essential step in many medical applications. However, it is very challenging to accurately extract important features from ultrasound data that is corrupted by various imaging artifacts. Traditional intensity-based methods generally have poor performance in detecting salient features from ultrasound images. In contrast, phase-base approaches have been shown to perform...
Mesh models can be extracted from medical imaging data. However some methods (e.g., CT) may suffer from severe artifacts (e.g., staircases, noises) in current clinical routine. As a consequence, haptic systems, when using these influenced mesh models, will become unstable. To tackle this problem, in this paper we propose an effective medical-oriented smoothing algorithm focusing on haptic rendering...
This paper presents a unified coupling-matrix synthesis method for microstrip quadruplet bandpass filter on λ/4 resonators. The mainline is implemented with cascading four λ/4 resonators via alternative J and K inverters, while the weak cross coupling path is created with a J inverter between the 1st and 4th λ/4 resonators. The resultant bandpass filter features a generalized Chebyshev in-band frequency...
A novel wideband 3-dB power divider is proposed and designed under triple-mode resonance of a cross-shaped microstrip-line resonator. A 50-25Ω impedance transformer is firstly formed by directly tap-feeding this triple-mode resonator at its two different positions. The bandwidth of this impedance transformer can be properly controlled by changing the characteristic impedance of the two loaded stubs...
A high-selectivity dual-band bandpass filter using a modified triple-mode resonator with two paralleled stubs is proposed. By adding a coplanar waveguide (CPW) structure into a microstrip dual-mode stepped-impedance resonator (SIR), the triple-mode resonator is achieved without significantly increasing the overall circuit size. Five transmission zeros are generated in the desired band so as to improve...
Tunneling technology has been widely applied in the network, but the lack of effective congestion exposure in the tunnel, seriously affect the performance of the tunnel technology. This document will focus on the tunnel scenario, to design a tunnel congestion exposure and feedback model, and the tunnel congestion marking scheme and congestion information feedback scheme. First, the document describes...
This paper presents a new type of lager tuning rate tunable filters using varactor-loaded open-loop resonators. The filter is based on capacitively loaded folded λ/2 resonators that are coupled to each other with mixed electrical and magnetic coupling. By adjusting the value of the varactors between the open gaps in a mixed coupled filter, the coupling coefficients and external quality can be tuned...
Ultrasound image fusion has been widely used in interventional surgeries, providing surgeons both detailed structural information via CT/MRI and real-time ultrasound information. However, patient respiration induced quasi-periodic organ motion usually leads to unacceptable registration and fusion errors. In this paper, we propose a method to build a patient specific respiratory motion model and make...
We present a new segment-based method for saliency detection based on multi-size superpixels that combines local and global saliency cues. We extract superpixels at several scales and represent each superpixel with a normal distribution in CIE-Lab space estimated from its associated pixels. Global saliency is computed by grouping similar superpixels to estimate the spatial distribution of colors,...
Conventional die soak in hydrofluoric acid (HF) to prepare SIMS sample for gate oxide depth profiling analysis works well for large-size poly-Si pattern. However, for small-size poly-Si pattern (< 50µm), the HF soak results in abnormality in the SIMS depth profiling. A mechanical polish combined with HF soak was proposed to solve the problem.
Satellite defects are found on wafer surface after development of photo-resist in photolithograph process. We present advanced TOF-SIMS and XPS analysis together with the process investigation to reveal the formation mechanism of the defects.
A class of microstrip triple-mode bandpass filters (BPFs) using a patch-loaded cross resonator are modeled, designed and tested in this paper. First, a symmetrical equivalent LC network is developed for a symmetrical patch structure. The values of all the inductors and the capacitors are extracted by applying the even-odd mode analysis. Then, three 1-port networks are developed to analyze the resonant...
A zero index metamaterial lens (ZIML) is proposed in this paper for antenna directivity and gain enhancement. The zero index metamaterial (ZIM) is constructed from both electric metamaterial with near-zero permittivity and magnetic metamaterial-modified split ring resonator (MSRR)-with near-zero permeability. The ZIM unit cell is numerically simulated in CST MWS. The scattering parameters show that...
In this paper, a compact microstrip dual-band Chebyshev bandpass filter based on λ/4 stepped impedance resonators is designed, which are serially coupled by the alternative J and K inverters. Appropriate impedances and lengths of λ/4 stepped impedance resonators are synthesized based on the values of chosen dual-band K inverter. The dual-band coupled-line is then synthesized to render required J couplings...
We demonstrate optical trapping by a plasmonic lens fabricated on the tip of a singlemode fiber. Three-dimensional sub-wavelength confinement of one-micrometer-size glass beads is achieved.
In this paper, a class of new dual-band microstrip bandpass filters (BPFs) using composite cross and open/short-circuited E-shaped resonators is proposed. With the choice of the open- or short-circuited E-shaped resonator, the dual-band filter can be designed with different number of transmission poles in each passband. A transversal coupling scheme is used to analyze and design the proposed dual-band...
In this paper, a novel I/O stage coupling scheme is presented for exploration of a microstrip triple-mode bandpass filter with improved out-of-band rejection performance. Firstly, a modified microstrip triple-mode stub-loaded resonator is formed by tap-connecting a λ/2 microstrip line resonator with a pair of open-circuited stubs of less than λ/4 in length at its two symmetrical positions. As such,...
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