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Multimedia Communication SoC

 

Objectives

To investigate the VLSI integration methodology of broadband multimedia communication, which includes VLSI architecture of broadband transceiver, design flow and methodology of multimedia communication SoC, VLSI design of DTV and future wireless communication chip.

 

Research interests:

l         VLSI design for digital TV channel demodulator (DVB-C/DMB-T/DVB-T/DVB-H)

l         Advanced error control coding and decoding (Reed-Solomon, Turbo, LDPC)

l         Ultra Wide Band (UWB) transceiver design

l         Chip architecture for future wireless communication

l         Low power design methodology for communication SoC

 

Recent achievements:

l         Digital TV demodulator for terrestrial transmission(CDTV-1 chip)

l         Low power demodulator for mobile DTV receiver

l         More than 10 papers published on journals or international conference proceedings.

 

Main researchers: Dian Zhou, Xuan Zeng, Bo Shen, Ning Li, Junyan Ren, Hao Min, Jiarong Tong, Wenhong Li, Guoquan Zhang, Wenqing Zhao, etal.


 

Data Communication SoC

 

Objectives:

To investigate the DSP algorithms, system architectures, and circuit implementation of high-speed data communication SoC for various wired and wireless applications.

 

Research interests:

Ethernet physical transceiver based on UTP line, Gigahertz serial-to-parallel and parallel-to-serial data transceiver based on fiber-optical, GSM/GPRS/WCDMA/UWB CMOS RF transceiver, the integration methodology and testing scheme of RF and mixed-signal SoC, etc.

 

Recent achievements:

Fast Ethernet PHY--10/100Base-T, Gigabit Ethernet PHY--1000BaseT, 1Ghz CMOS SERDES. CMOS Gigabit Ethernet PHYs (Base-T and SERDES) technology has passed the evaluation from industry and government and be the first success of the related technologies in China.

 

Main Researchers: Junyan Ren , Fan Ye, Wei Li, Ning Li, Zengyu Zheng, etal.

 

 

Analog, RF & Mixed-Signal Design

 

Objectives:

To investigate low-power, low-voltage, high-speed analog/RF/mixed-signal design methodology, and the implementation of important SoC embedded IP cores for the applications of wired/wireless communication and consumer electronics.

 

Research interests:

high-speed CMOS A/D& D/A converters, low jitter PLL/clock generator, low phase noise frequency synthesizer, DSP algorithms and VLSI implementation for high-speed data communication, GSM and UWB CMOS RF front-ends, analog/RF/mixed-signal chip testing, etc.

 

Recent Achievements:

125-200 Mhz area-efficient folding/interpolating ADC with digital CMOS process, 40-125Mhz low power low-voltage pipeline ADC, 900/1800/1900Ghz low phase noise LCVCO/LNA/Mixer, 125Mhz single baud-rate CDR with PLL/phase interpolating, 125Mhz equalizer/viterbi decode. Applications include terrestrial HDTV demodulator, Base-T Ethernet PHYs and GSM/GPRS CMOS RF receivers, etc. Megahertz CMOS ADC has passed the evaluation from industry and government and be the first success of the related technologies in China.

 

Main Researchers: Junyan Ren , Jun Xu, Fan Ye, Wei Li, Ning Li, Zengyu Zeng, etal.

 

 

Information Security ASICs

 

Objectives:

VLSI design of the algorithms and protocols for information security. The total solutions research for anti attacking and analysis of security chip, such as the algorithms, circuit’s architectures and relative IPs.

 

Research Interests:

l         The circuit’s architectures design and their VLSI implementations of public-key cryptographic coprocessors.

l         The circuit’s architectures design and their VLSI implementations of symmetric key cryptographic coprocessor.

l         Research of SoC platform for information security and VLSI Design of security SoC chip.

l         Anti-attacking technologies and its relative IP core for security chip.

l         VLSI implementations of algorithms of copyrights protection based on digital water marking and information hiding.

 

Recent Achievements:

l         A SoC platform for information security and a SoC chip based on this platform.

l         Several anti attacking algorithms, circuit’s architecture and relative IPs for security chip.

l         6 patents under approval.

l         Over 20 papers in publication.

 

Main researchers: Xiaoyang Zeng, etal.

 

 

Objectives:

To investigate the circuit architecture, related software system of a novel FPGA IP core for data-path application and its application in SOC design. A 100,000-system-gates programmable logic device¾FDP100k (FPGA for Data-Path) and its software system have been developed in China firstly. FDP100k and its software system have been passed the test by National Center of Testing Technology Shanghai. The achievements are also passed the export evaluation by the committee of experts organized by Shanghai Science and technology Committee.

 

Research Interests:

l         The research on a novel FPGA architecture

l         The research on software system related the novel PFGA architecture

l         The SOPC solution embedded FPGA IP core.

 

Recent Achievements

The research is currently to develop the FPGA IP core with the scale of 200,000-system-gates, with 0.18um CMOS technology, and its related software system in 2-3 years. The FPGA group will also do some research in the new architecture, new process, new technology (such as anti-radioactive, low power) and so on for SOPC(System on Programmable Chip) solution.

 

Main Researchers: Jiarong Tong, Jinmei Lai, Pusan Tan, Jinnan Huang, etal.

 

Wireless RF Integrated Circuits and System

 

Objectives

Wireless multi-standard terminals are the future terminals compatible to mobile phone, wire-less LAN and so on. The group of wireless RF circuit and system studies and develops the design methodology, architecture, the basic blocks and integration of multi-standard RF fronts, and evermore integration with base-band processor.

 

Research Interests:

l         Integration of wireless LAN 802.11a/b/g,

l         Integration of GSM and CDMA,

l         Integration of mobile phone and wireless LAN.

 

Recent Progress:

l         Monolithic circuit of Blue-tooth front circuit,

l         Monolithic circuit of wireless LAN 802.11a/b/g,

l         GSM transmitter

l         10 bits, 80Msamples/s A/D, and D/A converter for wireless system application,

l         JPEG, JPEG-2000, and H264 for multi-media wireless system application

 

Recent Achievements:

l         A monolithic blue-tooth front circuit has been integrated and measured, see Fig. 1 

Fig. 1 Monolithic Blue-tooth front circuit

l         The key blocks of wireless RF circuits for wireless LAN and GSM transmitter, low noise amplifier, mixer, power amplifier and ΣΔ fractional divider clock synthesizer have been manufactured.

l         JPEG, JPEG-2000,USB2.0, LCD driver and so on have been integrated in millions resolution digital cameras. See Fig. 2.

Fig. 2 JPEG Digital camera circuit 

 

l         10-Bits, 50Msamples and 80Msamples A/D converters and 10-Bits, 80Msamples D/A converter have been developed and measured. Fig. 3 shows the micro-photographic of Two A/D converters and D/A converters together.

 


Fig. 3, Integrated two A/D converters and D/A converters for wireless application.

 

Main researchers: Zhiliang Hong, Lianxing Yang, Ting Yi, Yumei Huang.

 

 

Flat Panel display SOC Technology

 

Research Interests:

l         Low temperature polysilicon TFT technology includes metal induced lateral crystallization, excimer laser annealing, and combined technology and its mechanism research. The objective is to optimize the polysilicon TFT fabrication technology and develop TFT on large area glass and plastic substrate.

l         IC design for TFT-LCD driver. The objective is to realize the automatic design, test for LCD driver IC, and magnify the development for integrated TFT controller, system processor and SOC for video system, which can provide bandwidth to drive TFT video.

Design and Development for SOC of TFT-LCD. The objective is to integrate the peripheral driver IC and pixel on the glass substrate and to integrate the switc

 

FPGA

l         h transistor and driver circuit, combine the display and data processing function, realize Chip on Glass (COG), and effectively reduce the number of panel driver ICs and the complexity of interconnect.

Main researchers: Ran Liu, Xinping Qu, Hao Min.

 

 

Wireless Sensor Network

 

Objectives:

To investigate a cost-effective IEEE 802.15.4/ZigBee -based low data-rate, low-power, short-range wireless sensor network. A demo that can provide the complete solutions for a few typical applications will be present. The key technologies involved in will include the implementations of the transceiver-ICs and the feasibility study of developing true SoCs by CMOS technology, the tiny OS exploration, the designs of the physical/logical link control, and network layers of the self-organizing ad hoc communication protocol, etc.

 

Research Interests:

l         The research on the network architecture and associated protocols

l         Tiny operating system for WSN nodes

l         The designs of low power transceiver integrated circuit based on IEEE802.15.4/ZigBee

l         The true SoC solution with low power RF circuit design technology

l         The research on the WSN sensor nodes

 

Recent Achievements

The research is currently at the starting phase. The specifications of the WSN for a few applications will be defined soon. Meanwhile the network architecture and the associated protocols are being studied. The trend and challenges in the development of the transceiver-IC for such low data-rate, low-power and short-range communication systems based on IEEE 802.15.4/ZigBee are also emphasized.

 

Main Researchers: Dian Zhou, Hao Min, Ran Liu, Wei Li, Zengju Tian, Zhangwen Tang, Weixun Cao, etal.

 

 

Thin Film Technology

 

Research Interests:

The group conducts research on microelectronic thin films and related device technologies, with focus on (1) Self-aligned metal silicide thin film preparation and characterization for VLSI contact and interconnect; (2) Multi-layer solid state reaction and interlayer mediated solid phase epitaxy; (3) Inhomogenieties in metal-semiconductor contacts; (4) Preparation and characterization of silicide nanowire; (5) Novel ultra-thin diffusion barriers for copper interconnect; (6) Low temperature poly-Si and poly-SiGe preparation and TFT device technology; (7) Electrical characterization of ultra-shallow junction; (8) Thermo-sensitive thin film and its application in infrared device.

 

Current Projects 3 NSFC projects, 53 Shanghai projects and 3 international collaboration project:

l         Multi-layer solid phase reaction and Co-Ni sililicide thin films and their self-aligned technology

l         Rare-earth metal silicide thin film and its contact properties with Si

l         Preparation and characterization for silicide nanostructure

l         Atomic layer deposition of ultrathin diffusion barrier for copper interconnect

l         Copper interconnect technology without copper seed layer

l         Metal induced lateral crystallization for Si-Ge-C thin film at low temperature and its application for TFT

l         Stripping Hall measurement of ultra-shallow junction

l         Preparation of VOx thin film for micro bolometer and its contact properties

 

Main Researchers: Guoping Ru, Xinping Qu.

 

 

Novel Nonvolatile Memory & Thin Film Devices

 

The main research work focus on phase change memory and integrated ferroelectric technology, including materials, design, device process and modeling.

 

Research Interests:

l         Preparation, properties, optimization and mechanism of chalcogenide thin film.

l         Preparation, properties, optimization and mechanism of Perovskite and Bi-layer Ferroelectric thin film.

l         Modeling and simulation of phase change memory device and integrated ferroelectric device.

l         Design of PCM and FeRAM, device based on MFIS, nonvolatile logic circuit and nonvolatile FPGA, etc.

l         Novel device and process based on chalcogenide thin film and ferroelectric thin film.

l         Semiconductor thin film device base on chalcogenide thin film.

 

Recent Achievements:

l         One of groups first developing phase change memory and integrated ferroelectric technology.

l         Developed a series of material optimization process and mechanism about chalcogenide and ferroelectric thin film.

l         Sep up a series of modeling for integrated ferroelectric device and phase change device.

l         Developed the first low density FeRAM in mainland and the first nonvolatile logic circuit in the world.

l         Published more than 90 papers on international journals and meetings.

l         Having a series of patents about integrated ferroelectric and phase change memory field.

 

Main Researchers: Tingao Tang, Yinyin Lin.

 

 

Modeling and Simulation of IC Technology

 

Objectives:

To investigate and develop methodology of IC modeling and simulation, mainly focused on process, novel devices and chip-level thermal issues.

 

Research Interests:

 l         NanoCMOS Modeling and simulation incorporating quantum effects

 l         Process variation modeling and its influence on chip-performance and yield

 l         Modeling and simulation of chip-level thermal generation and dissipation

 l         Impacts of process variation on interconnect performance and associated yield issues

 l         Reliability issues of Flash memory

 

Recent Progress:

 l         About 7 papers published on international journals or international conferences

 

Recent Achievements:

 l         Annual report on the international project on “Modeling and simulation of thermal generation and dissipation in chip using Tera-level NanoCMOS technology with multi-level metallization” presented and passed.

 

Main Researchers: Wuyun Quan, etal.

 

 

MEMS/NEMS

 

Objectives:

To develop and explore various types of MEMS/NEMS sensors and their integration technology. The research fields encompass micromechanical/ nanomechanical structures and their behaviors under micro/nano-scale, basic study of their combination with IC SoC technology, design theory on MEMS/NEMS, device (piezoelectric resonators, photoacoustic components, etc.) development, signal acquisition and analysis systems and wireless communication, advanced micro/nano-processing technologies, such as novel sensing materials and their integration techniques. Furthermore, MEMS/NEMS application reserches in the fields of cell cultivation, drug screening, medical diagnosis, environmental detection and antiterrorism/terrorism-prevention are widely involved.

 

Research Interests:

 l         Resonant microcantilver gas sensor

 l         Photoacoustic gas sensor

 l         Liver-fibrosis marker detector based on MEMS electrodes

 l         Gas sensor array based on polymer membranes

 l         Gas sensors based on the combination of QCM and nano-sensing membranes and their applications

 l         Microcantilver array for drug screening

 l         Study on warfare detectors

 l         Microcantilever gas sensors with photo-induced deformation and piezoelectric detection

 l         Microdynamics (the Dynamics of Micromechanical Structures)

 l         Damping Mechanisms in MEMS Devices

 

Main Researchers: Yiping Huang, Minhang Bao, Jia Zhou.

 

 

High-k &Low-k

 

Objectives:

To investigate processing and technology of high-k and low-k dielectrics for ULSI, and the related issues on integration & reliability.

 

Research Interests:

l         Atomic layer deposition high-k gate dielectrics;

l         Interfacial reaction of high-k gate dielectrics and silicon;

l         Matal gate and high-k dielectrics;

l         Reliability of high-k gate dielectrics;

l         New low-k dielectrics for ULSI;

l         Processing integration of low-k dielectrics and copper.

 

Recent Progress:

l         Deposition of Al2O3 & HfO2 by ALD;

l         Synthesis of a-SiCOF with low-k by PECVD;

l         Interaction between ultra-thin barrier of TaN and SiCOH with low-k;

l         Mechanisms of TMA and HfCl4 absorption on Si and Si1-xGex substrates during atomic layer deposition;

l         Effects of NH3 pretreatment of substrate surface on atomic layer deposition deposition of Al2O3 and HfO2.

 

Recent Achievements:

l         One approved patent on new low-k material and its synthesis method;

l         More than 30 papers published in Applied Physics A, Journal of Physics D, Journal of Physics: Condensed Matter, Applied Surface Science and other international journals.

 

Main Researchers: Wei Zhang, ShiJin Ding, Jitao Wang.

 

 

Applied Nanoelectronics

 

Objectives:

To conduct research related to the issues encountered in the transition from micro- to nanoelectronics.

 

Research Interests:

l         New materials, structures and concepts for Si-based nano- and bio-devices

l         Physical and electrical characterization of nanodevices

l         Nano-MOSFET quantum effect theory

l         Numerical analysis methods for nano&micro electronics system.

 

Main Researchers: Ran Liu, Shili Zhang, Wei Cai.

 

 

 
 
 
 

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