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International Conference on (ICEPT) Electronic Packaging Technology

作者： Wen-Rong Yang Yuan-Yuan Cheng Jiong-ming Wang Key Laboratory of Advanced Display and System Applications Ministry of Education Microelectronic Research & Development Center Shanghai University Shanghai China

The paper describes a four-order delta-sigma modulation (DSM) with 15 levels quantizer which is used in a 24-bit 44.1-kHz sample-rate audio digital-to-analog converter (DAC). An odd level quantizer has been chosen instead of an even level to reduce quantization noise. The noise transfer function (NTF) is designed to have the zeros optimally in order to increase DR. The peak SNR of the DSM is about 130 dB, which is enough for an audio DAC designed with a 0.35 um CMOS technology.

关键词： Noise Signal to noise ratio Quantization CMOS technology Transfer functions CMOS integrated circuits Converters

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The design of the cache crossbar based on OpenSPRAC architecture

The design of the cache crossbar based on OpenSPRAC architec...

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Xi-chuan Wang Bin-feng Qian Microelectronic Research & Development Center Key Laboratory of Advanced Display & System Applications Ministry of Education Shanghai University Shanghai China

Multi-core processor is widely used on the server and desktop computer nowadays. This paper describes the structure of a cache crossbar which used in the multi-core processor SPARC T2. The cores can use the cache crossbar to exchange the data in the L2 cache banks. The multi cores can communicate among each other core by sharing the data in the L2 cache banks. And with the analysis of the CCX, this paper provides a protocol for connecting multi cores and cache banks. The cache crossbar is implemented in SMIC 0.13 mum with design compiler and can run at 200 MHz.

关键词： Magnetic cores Protocols Sun Computer architecture Pipelines Registers Packaging

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Design of On-Chip Debug Module Based on MCU

Design of On-Chip Debug Module Based on MCU

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International Symposium on High Density Packaging and Microsystem Integration (HDP)

作者： Yue-li Hu Ke-xin Zhang Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Education Microelectronic Research and Development Center Shanghai China

A design method of embedded OCD (On-Chip Debugging) based on Intel 8051 MCU architecture is proposed. The OCD module named E-OCD-SFRB (Enhanced OCD module with SFR (Special Function Register) Breakpoint Function) is integrated into an existing MCU core, implementing several debugging function. The method we proposed is able to switch from running mode and debugging mode conveniently by controlling the debugging enable port and also enables controlling the MCU core in debugging mode by additional SFR. The function of SFR breakpoint is added, so we could trace the particular SFR, this is the reinforcement to the exiting OCD methods. The principles of E-OCD-SFR_B and detailed implemental method and simulation solution based on EDA platform are presented and validated. The simulation result indicates the completely observing and controlling to the core is achieved without any effect to original functions of the system.

关键词： Debugging Switches Clocks Ice system-on-a-chip Embedded system Emulation Monitoring Communication system control Registers

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A Pipeline Sliding Window Max-Log-Map Turbo Decoder

A Pipeline Sliding Window Max-Log-Map Turbo Decoder

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International Symposium on High Density Packaging and Microsystem Integration (HDP)

作者： Ming Li Ming-ming Peng Jing-sai Jiang Fa-yu Wan Microelectronic Research & Development Center Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai China

Turbo codes have become an attractive forward error correction scheme for wireless communication systems. MAP algorithm is the optimization algorithm for turbo-codes. But its implementation is complex. Max-Log-MAP algorithm is a sub-optimization algorithm of turbo-codes, which offers good compromise between performance and complexity for implementation. The authors present a re configurable turbo decoder based on Max-Log-MAP algorithm implemented with sliding window method and pipeline architecture. The sliding window (SW) method can reduce memory size. Pipeline decoding schemes can reduce decoding delay and improve throughput. The structure we proposed can reduce decoding delay obviously. It can be used in wireless communication.

关键词： Pipelines Turbo codes Iterative decoding Delay Wireless communication Throughput Microelectronics Laboratories displays Forward error correction

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Characterization of Electrospun Zinc Oxide Nanofibers

Characterization of Electrospun Zinc Oxide Nanofibers

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2013 International Conference on Materials for Renewable Energy and Environment

作者： Yanyan Chang Nanhong Zhang Mengke Zhuang Xiuzhen Lu Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT CenterSchool of Mechatronics Engineering and AutomationShanghai University

ISBN: (纸本)9781479933372

ZnO nanofibers were prepared by sol-gel processing and electrospinning ***(vinyl acetate)(PVA) and zinc acetate were used as precursors of PVA/zinc acetate composite *** composite and calcined nanofibers were characterized by Thermo gravimetric analysis(TGA),energy disperse spectroscopy(EDS),X-ray diractometer(XRD) and scanning electron microscopy(SEM),*** calcination of PVA/zinc acetate composite nanofibers at 400,600,and 800°C in air for 2 hours with heating rate of ～4°C/min,ZnO nanofibers were obtained *** ZnO nanofiber diameters were 207,135,158,and 200nm before and after calcination at 400,600,800°C,*** diameter of fibers reduced firstly and then increased with the rising calcination *** possible mechanism of it is also discussed.

关键词： ZnOnanofibers electrospinning Morphologies calcination

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A 2.4GHz monolithic SiGe power amplifier for Wireless-LAN transceiver

A 2.4GHz monolithic SiGe power amplifier for Wireless-LAN tr...

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Asia Pacific Conference on Postgraduate Research in Microelectronics & Electronics (PrimeAsia)

作者： Ying Ruan Lei Chen Yan-hua Liu Feng Ran Zong-sheng Lai Faculty of Computer & Information Engineering Shanghai University of Electrical Power China Institute of Microelectronic Circuit & System East China Jiao Tong University China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University Shanghai China

A high-linearity power amplifier (PA) for 2.4 GHz Wireless-LAN transceiver is presented. The PA is designed and implemented using a 0.18 um SiGe BiCMOS process. An on-chip adaptive linearizer is comprised of a base-emitter diode of the bias transistor and a bypass capacitor with almost no increase in die area and no extra dc consumption. Besides the linearization function, the active biasing circuit is also temperature-insensitive with simple structure. Including all matching circuits and biasing circuits, the die area of the fully integrated PA is 1.2 mm * 1.1 mm. Temperature simulation indicates the variation of power gain is less than 1.6dB from 20°C to 80°C. The second-order and third-order LMD are less than -30.9 dBc and -34.5 dBc when the output PI dB has been reached. With 3.3 V supply, the PA achieves max PldB of 23.2 dBm and a power added efficiency (PAE) of 21.3%.

关键词： Power amplifiers Silicon germanium Power generation Radio frequency Power transistors Metals BiCMOS integrated circuits

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Lateral Etched Tunnel Junction Apertures for 1.3μm Vertical-Cavity Surface-Emitting Lasers 4th

Lateral Etched Tunnel Junction Apertures for 1.3μm Vertical...

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4th International Conference on Telecommunications and Communication Engineering, ICTCE 2020

作者： Liu, Cheng Wu, Huizhen School of Microelectronics Shanghai University Shanghai200444 China Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai200072 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China Department of Physics Zhejiang University Zhejiang Hangzhou310027 China

ISBN: (纸本)9789811656910

1.3μm wafer-bonded vertical-cavity surface-emitting lasers are fabricated, which employ lateral etched p+-InAlAs/n+-InP tunnel junctions as confinement apertures. The VCSEL with a 5μm-diameter aperture exhibits CW operation with threshold current of 0.55 mA, maximum operation temperature up to 82 °C and single-transverse mode emission. The relationship between temperature-dependent characteristics and aperture sizes are discussed. The lateral etched p+-InAlAs/n+-InP tunnel junction aperture is attractive as confinement for high performance wafer-bonded long wavelength VCSELs. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Surface emitting lasers

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Organic Memristor Based on High Planar Cyanostilbene/Polymer Composite Films

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Chemical Research in Chinese Universities 2023年第1期39卷 121-126页

作者： ZHAO Jinjin LI Wei WANG Xuechen WEI Xiao ZHU Huiwen QU Wenshan MEN Dandan GAO Zhixiang WEI Bin GAO Hanfei WU Yuchen Department of Physics Shanxi Datong UniversityDatong037009P.R.China Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing100190P.R.China Ji Hua Laboratory Foshan528000P.R.China Shanxi Province Key Laboratory of Microstructure Electromagnetic Functional Materials Institute of Solid State PhysicsShanxi Datong UniversityDatong037009P.R.China School of Chemistry and Chemical Engineering Shanxi Datong UniversityDatong037009P.R.China Key Laboratory of Advanced Display and System Applications Ministry of EducationSchool of Mechatronic Engineering and AutomationShanghai UniversityShanghai200072P.R.China

Organic memristors with low power consumption,fast write/erasure speed,and complementary metal-oxide-semiconductor(CMOS)compatibility have attracted tremendous attention to mimic biological synapses to realize neuromorphic computation in recent *** this paper,organic resistive switching memory(ORSM)based on(Z)-3-(naphthalen-2-yl)-2-(4-nitrophenyl)acrylonitrile(NNA)and polymer poly(N-vinylcarbazole)(PVK)composite film was prepared by spin-coating *** performance based on NNA:PVK composite films with different mass fractions of NNA were systematically *** ORSM based on PVK:40%(mass fraction)NNA composite film exhibited non-volatile and bipolar memory properties with a switching ratio(Ion/Ioff)of 24.1,endurance of 68 times and retention time of 104 s,a“SET”voltage(Vset)of−0.55 V and a“RESET”voltage(Vreset)of 2.35 *** resistive switching was ascribed to the filling and vacant process of the charge traps induced by NNA and the inherent traps in PVK *** holes trapping and de-trapping process occurred when the device was applied with a negative or positive bias,which caused the transforming of the conductive way of charges,that is the resistive behaviors in the *** study provides a promising platform for the fabrication of ORSM with high performance.

关键词： Organic memristor Resistive switching Polymer/molecule composite film

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Disparity compensation based 3D holoscopic image coding using HEVC

Disparity compensation based 3D holoscopic image coding usin...

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IEEE China Summit & International Conference on Signal and Information Processing (ChinaSIP)

作者： Deyang Liu Ping An Ran Ma Liquan Shen School of Communication and Information Engineering Shanghai University Shanghai China Ministry of Education Key Laboratory of Advanced Displays and System Application Shanghai China

ISBN: (纸本)9781479919499

3D holoscopic image can provide true 3D content by reproducing the light rays of the 3D scene and is regarded as a promising technique for future 3D TV. Disparity information is paramount intrinsic characteristic of the 3D holoscopic image. In this paper, a disparity compensation based 3D holoscopic image coding algorithm using HEVC is put forward. In order to drive an authentic disparity, we expand the available area outwards in the disparity matching process instead of dividing the current coding block into four parts. Experimental results demonstrate that the proposed method can obtain considerable gains over original HEVC intra-prediction and the classical TMP algorithm with acceptable complexity increasing compared to original HEVC standard.

关键词： Three-dimensional displays Image coding Encoding Video coding Imaging Standards Image reconstruction

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Stereoscopic video conversion based on depth tracking

Stereoscopic video conversion based on depth tracking

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International Conference on Signal Processing Proceedings (ICSP)

作者： Yanfei Wu Ping An Ping Wang Zhao Yang Zhang School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai China

Conventional 2D-to-3D conversion approaches always have some problems due to fast motion and non-rigid objects. In this proposed approach, a bi-direction optical flow is used to extract credible corner points from original sequences, and then Mean Shift algorithm helps to segment foreground object. In addition, improved active contour model offers more accurate outlines. Finally depth correlation gets to deal with the temporal depth variation caused by objects' motion or camera motion. The experimental results give good performance with higher accuracy.

关键词： Tracking Computer vision Image motion analysis Adaptive optics Three dimensional displays Image color analysis Motion segmentation

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