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A new compact and easy-to-achieve edge termination featuring the n-p double rings and all-cover field plates is presented for silicon high-voltage devices. This structure can divide and share much more voltage at each n-p double ring than its conventional counterpart does and thus largely shrink the lateral spreading of the depletion region. At a given blocking voltage, it helps save the chip area,...
We demonstrate an ultra-thin freestanding plasmonic membrane that supports surface plasmon resonances. The 30 nm-thick membrane is perforated with an array of holes using the imprint-and-transfer approach. The fabricated plasmonic membrane exhibits extraordinary optical transmissions in the mid-wave infrared wavelength range and can be used as an optical sensor to measure the absorption of a thin...
To reduce the current loop reference distortion in traditional average current control and total harmonic distortion of line current, this paper employs improved average current control (IACC) of Boost PFC, in which a digital-generated unit sinusoidal half-wave (USHW) is introduced as current loop sinusoidal reference. Aimed at generating USHW with DSP's enhanced capture module correctly and conveniently,...
The evaluation of network system effectiveness is the key method to judge whether the system network architecture is stable and effective. This paper adopts the entropy method and the experience of decision makers to establish the evaluation system of the network efficiency of the intelligent distribution network monitoring service system, basing on the evaluation index of network effectiveness obtained...
This paper investigates the type-2 T-S fuzzy multiple feedback-loop guaranteed cost controller design for uncertain singular systems with transmission and state delays. Based on the type-2 T-S fuzzy theory, this work constructs a mathematical model for a class of nonlinear uncertain singular time-delay systems. Using the parallel distributed compensation concept with Lyapunov theory and linear matrix...
For power semiconductor devices, such as IGBTs, MOSFETs and FRDs, a high area efficiency of the edge termination structure can enlarge the active area and thus improve the current capacity for a given chip area. In this paper, a double-sided edge termination (DSET) is proposed for the first time. Simulation results show that it can improve the breakdown voltage by about 42% without increasing the...
For the first time, this paper reveals and explains the detailed contribution of the main-junction lateral resistive zone to the ruggedness of high-voltage fast recovery diodes during a harsh reverse recovery. And its optimized width is discussed.
This paper presents an integrated fully differential current driver for wearable multi-frequency electrical impedance tomography (EIT). The integrated circuit (IC) comprises a wideband current driver (up to 500 kHz) functioning as the master for current sourcing, and a differential voltage receiver with common-mode feedback configuration as the slave for current sinking. The IC is fabricated in a...
The softness and the switching losses are the key characteristics to evaluate the quality of the ultra voltage power diodes, especially for high frequency application. In this paper, we applied the Controlled Injection of Backside Holes (CIBH) structure to the 10kV SiC diode based on TCAD, by which, the softness and snap-off characteristics of the diode is significantly optimized compared with conventional...
Safety and efficiency of carrier flight deck are two important factors that have great effects on the comprehensive performance of carrier. This paper studies on path planning algorithms for carrier aircraft on the deck in consideration of safety and efficiency requirements. Firstly, a kinematic model of the carrier aircraft, obstacle avoidance models and boundary constraints are proposed. Subsequently,...
Traffic scene recognition is an important and challenging issue in Intelligent Transportation Systems (ITS). Recently, Convolutional Neural Network (CNN) models have achieved great success in many applications, including scene classification. The remarkable representational learning capability of CNN remains to be further explored for solving real-world problems. Vector of Locally Aggregated Descriptors...
Multi-level morphological active contour algorithm (MMAC), was proposed in [3-4], to incorporate mathematical morphology for tree detection and crown delineation with the average prediction error around 4% in mountainous areas. However, two major drawbacks come with the design of MMAC algorithm, which are huge computational complexity and certain level of false alarm or omission rate. The paper provides...
The idea of decomposition is becoming increasingly successful and popular in evolutionary multi-objective optimization. An efficient cone decomposition approach was further developed in the conical area evolutionary algorithm (CAEA). This approach improves the runtime efficiency and population diversity of decomposition-based algorithms effectively for bi-objective optimization in practice. In this...
Most of the existing community detection (CD) methods are designed primarily for unsigned networks containing only positive links. Therefore, it is significant to explore and design effective CD methods for signed social networks (SNs) with both positive and negative links. In this paper, we first utilize decomposable characteristic of modularity Q to establish a bi-objective model for community detection...
Collaborative learning technology has been widely applied in various disciplines in support of dialectical discourse and argumentation. Technologies not only allow multiple users to concurrently analyze and edit documents in the same virtual space but also present richer cues for collaboration awareness. However, researchers still know very little about how the synching mechanisms work together to...
A high peak hole mobility of 412 cm2/V-sec at Ninv=1.8×1012 cm−2, a very low Jg of ∼10−4 A/cm2 at Vg=Vfb+1 V and an ultralow EOT of 0.53 nm in Ge pMOSFETs are simultaneously achieved by high-k/0D-HKVGe02 gate stack with suitable treatments. The content of Ge+1 and Ge+2 in GeOx layer are re-oxidized to higher oxidation state by gettered oxygen, which is captured by OD-HfOx from GeOx. The proposed gate...
In this paper, a bone-guided cochlear implant (BGCI) SOC microsystem is proposed and designed. The BGCI microsystem uses four or more electrodes placed on the bone surface of the cochlea and one on the round window to preserve partially the acoustic hearing. The external SOC of the BGCI processes the acoustic signals and generates stimulation patterns and command that are transmitted to the implanted...
This paper presents a 16-channel closed-loop neuromodulation SoC for human seizure control. The SoC includes a 16-ch signal acquisition unit, a bio-signal processor, a 16-ch adaptive stimulator, and wireless telemetry. The signal acquisition unit achieves 3.78 NEF and shares electrodes with stimulator. The seizure detection latency is 0.76s and delivered 0.5–3mA biphasic current stimulation. The SoC...
Voice is envisioned to be a popular way for humans to interact with Internet-of-Things (IoT) devices. We propose a proximity-based user authentication method (called PIANO) for access control on such voice-powered IoT devices. PIANO leverages the built-in speaker, microphone, and Bluetooth that voice-powered IoT devices often already have. Specifically, we assume that a user carries a personal voice-powered...
It's known that single-phase power factor correction (PFC) converter has second-order harmonic currents (SHC), which results in voltage ripple on DC load. The active storage unit (ASU) is employed to absorb SHC with ASU's input current (iasu) following SHC. In order to accurately extract ASU's current reference (iasu*) in a simple way, a real-time calculation method is proposed. At the same time,...
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