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6th International ICST Conference on Wireless Internet, WICON 2011

作者： Yu, Hang Jiang, Lai Lin, Shengyue Li, Yan Wei, Rongchen Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University 518060 Shenzhen China

ISBN: (纸本)9783642304927

5.8 GHz is specified as the operating frequency of the electronic tolling collection (ETC) system in the new national highway network in China. A low power, robust radio frequency receiver is the key design challenge in such a system. A 3rd order butterworth low-pass filter with tunable pass-band designed for the ETC receiver was presented in this work. The design is based on a single operational amplifier in order to reduce the overall power consumption. The filter was implemented in standard CMOS 0.18 μm technology. Simulation shows that the design achieves a maximum 3-dB bandwidth of 2 MHz with 0 dB insertion loss, while the power consumption is only ∼200μW. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.

关键词： Operational amplifiers

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A 31μ W ASK clock and data recovery circuit for wireless implantable systems

A 31μ W ASK clock and data recovery circuit for wireless im...

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18th International Symposium on Intelligent Signal Processing and Communication systems, ISPACS 2010

作者： Yu, Hang Li, Yan Jiang, Lai Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design Shenzhen University China College of Computer Science and Software Engineering Shenzhen University China

ISBN: (纸本)9781424473717

Amplitude shift keying (ASK) and pulse position modulation (PPM) can be used to provide self-synchronized data and clock for wireless implantable neural recoding systems, and therefore simplifies the complexity of the implanted circuits. In this paper, a novel extremely low power receiver designed for such a scheme is discussed. The integrated receiver utilizes inductive load implemented by PMOS device to boost the voltage gain of the front end amplifier. A charge-pump based CDR circuit is utilized to extract the clock and non-retumto-zero (NRZ) data directly from the demodulated waveform, and the required reference voltage is adaptively generated to cover a large data rate range. The receiver design is validated using 0.25 μ m CMOS technology. It exhibits a sensitivity of ∼lmV at 1.5MHz, covers an input data rate between 7kbitls and 45.5kbit/s, and consumes only ∼3 1μ W of power. © 2010 IEEE.

关键词： Amplitude shift keying

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Comparative study of delta-sigma modulators for the fractional-N PLL in WBAN

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2012 International Conference on Electrical and Electronics Engineering, ICEE 2012

作者： Zeng, Qiming Yu, Hang Lai, Jiang Li, Yan Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen Guangdong 518060 China

ISBN: (纸本)9781461449805

A delta-sigma modulator (DSM)-based fractional-N frequency synthesizer is the key component of wireless transceiver in wireless body area network (WBAN) system. The noise suppression performance, integration, and power of the DSM are difficult to balance in implementation. In order to choose a proper DSM topology for WBAN applications, a comparative study of single-loop DSM and Multi-stAge noise SHaping (MASH) DSM are presented in this chapter. Simulation and experiment results show that the MASH DSM is more suitable for WBAN applications with higher integration, lower power, and unconditional stability. Implemented in a 90 nm CMOS process, the proposed MASH DSM occupies an area of 40.5 × 45 μm and its power consumption is only 34 μW. © 2014 Springer Science+Business Media New York.

关键词： Modulators

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A 3rd order opamp-based tunable low-pass filter design for data demodulator of a 5.8 GHz ETC RF receiver

A 3rd order opamp-based tunable low-pass filter design for d...

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International Conference on Computer, Informatics, Cybernetics and Applications 2011, CICA 2011

作者： Li, Yan Yu, Hang Lin, Shengyue Jiang, Lai Wei, Rongchen Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen Guangdong 518060 China

ISBN: (纸本)9789400718388

Electronic tolling collection (ETC) will be applied in the construction of the new national highway network in China and the Chinese standard has been released. A 5.8 GHz receiver satisfied the standard is one of the key components in the ETC system. In this work, a 3rd order low-pass filter was designed in a 0.18 μm CMOS process for the data demodulation block of the receiver. An operational amplifier was firstly realized and then a tunable low pass filter was designed based on the amplifier. Detailed simulation results are presented and the main design issues were discussed. © 2012 Springer Science+Business Media B.V.

关键词： Operational amplifiers

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A low power limiting amplifier designed for the RSSI of a 5.8 GHz ETC receiver

A low power limiting amplifier designed for the RSSI of a 5....

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International Conference on Computer, Informatics, Cybernetics and Applications 2011, CICA 2011

作者： Yu, Hang Li, Yan Wei, Wongchen Jiang, Lai Lin, Shengyue Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen Guangdong 518060 China

ISBN: (纸本)9789400718388

A low power limiting amplifier designed for received signal strength indicator of a 5.8 GHz ETC receiver is presented in this chapter. systematic analysis is carried out first to determine the optimal number of gain stages and the gain-bandwidth product of each stage. Then the detailed circuit design is discussed. The limiting amplifier consists of twelve AC-coupled gain stages, and is implemented using the standard CMOS 0.18 μm technology. The design is validated under Zeni design environment, and the simulation results show that the limiting amplifier achieves overall small signal gain of 98 dB, with 22 MHz bandwidth. Powered by a 1.8 V DC supply voltage, the total power consumption of the limiting amplifier is only 5.5 mW. © 2012 Springer Science+Business Media B.V.

关键词： Bandwidth

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High-Order Fully Actuated system Models for Strict-Feedback systems With Increasing Dimensions

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IEEE/CAA Journal of Automatica Sinica 2024年第12期11卷 2451-2462页

作者： Xiang Xu Guang-Ren Duan Shenzhen Key Laboratory of Control Theory and Intelligent Systems Southern University of Science and TechnologyShenzhen 518055 the School of System Design and Intelligent Manufacturing Southern University of Science and TechnologyShenzhen 518055China

This paper mainly addresses control problems of strict-feedback systems(SFSs)with increasing *** with the commonly-considered SFSs where the subsystems have the same dimension,we aim to handle more complex cases,i.e.,the subsystems in the considered SFSs are assumed to have increasing *** transforming the systems into highorder fully-actuated system(HOFAS)models,the stabilizing controllers can be directly *** first-order SFSs,secondorder and high-order SFSs are also considered.

关键词： Increasing dimensions high-order fully-actuated system nonlinear systems strict-feedback systems

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design of low power CMOS band-pass Gm-C filter for 5.8 GHz RF transceiver of ETC system

Design of low power CMOS band-pass Gm-C filter for 5.8 GHz R...

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2010 IEEE 12th International Conference on Communication Technology, ICCT'2010

作者： Li, Yan Yu, Hang Jiang, Lai Ji, Zhen Shenzhen City Key Laboratory of Embedded System Design Shenzhen University Shenzhen 518060 China College of Computer Science and Software Engineering Shenzhen University Shenzhen 518060 China

ISBN: (纸本)9781424468690

Since electronic tolling collection (ETC) allows vehicles passing through without slowing down which improves greatly transportation efficiency, it is chosen as the basic technology for new national highway network construction. The key component of the ETC system is a 5.8 GHz RF transceiver that enables wireless communication between toll booth and vehicles. A 1-V Gm-C sixth order band pass filter is designed in a 0.18 mm CMOS process for this purpose. Based on a pseudo differential operational transconductance amplifier (OTA), a wide tuning range and large input voltage swing is achieved. A common-mode feed forward (CMFF) circuit is introduced to reduce the distortion caused by common mode signal. The filter is implemented as a cascade of three identical second-order blocks. The power consumption is about 456 μW. © 2010 IEEE.

关键词： Operational amplifiers

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Secure mobile services by face and speech based personal authentication

Secure mobile services by face and speech based personal aut...

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2010 IEEE International Conference on Intelligent Computing and Intelligent systems, ICIS 2010

作者： Shen, Linlin Zheng, Nengheng Zheng, Songhao Li, Wei Shenzhen Key Laboratory of Embedded System Design College of Computer Science and Software Engineering Shenzhen University Shenzhen China College of Information and Engineering Shenzhen University Shenzhen China

ISBN: (纸本)9781424465835

With the popularity of mobile devices, people are now able to access mobile services like website surfing, e-banking, e-shopping and voice-mail etc. anywhere anytime. Most of the services require secure biometric based personal authentication. This paper aims to improve the accuracy of personal authentication in mobile environment by integrating multiple modal biometrics, i.e. face and speech. A specially designed Mobile Biometry (MOBIO) database was used to test the performances. While facial biometrics achieved an average EER of 27.3%, speech biometrics achieved an average EER of 33.4%. The multiple modals biometric system reduces the average error rate to 21.0%, which clearly proves the usefulness of fusing face and speech information. ©2010 IEEE.

关键词： Biometrics

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A Tutorial on Quantized Feedback Control

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 5-17页

作者： Minyue Fu IEEE the School of System Design and Intelligent Manufacturing Shenzhen Key Laboratory of Control Theory and Intelligent Systems and Centre for Control Science and TechnologySouthern University of Science and TechnologyShenzhen 518055China

In this tutorial paper, we explore the field of quantized feedback control, which has gained significant attention due to the growing prevalence of networked control systems. These systems require the transmission of feedback information, such as measurements and control signals, over digital networks, presenting novel challenges in estimation and control design. Our examination encompasses various topics, including the minimal information needed for effective feedback control, the design of quantizers, strategies for quantized control design and estimation,achieving consensus control with quantized data, and the pursuit of high-precision tracking using quantized measurements.

关键词： Consensus control high-precision control networked control quantized estimation quantized feedback control robust control

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Numerical Analysis on Nanoparticles-laden Gas Film Thrust Bearing

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Chinese Journal of Mechanical Engineering 2013年第4期26卷 675-679页

作者： YANG Zhiru DIAO Dongfeng YANG Lei Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Xi'an Jiaotong University Institute of Nanosurface Science and Engineering (INSE) Shenzhen University

Nanoparticles can be taken as additives and added into various fluids to improve their lubricating performances. At present, researches in this area are mainly concentrated on the improvement effects of nanoparticles on the lubricating performances of liquid such as oil and water. Nanoparticles will also affect gas lubrication, but few related studies have been reported. Nanoparticles-laden gas film (NLGF) is formed when adding nanoparticles into gas bearing. Then, the lubricating performances of gas bearing including pressure distribution and load-carrying capacity will change. The variations of pressure distribution and load-carrying capacity in nanoparticles-laden gas film thrust bearing are investigated by numerical method. Taking account of the compressibility of gas and the interactions between gas and nanoparticles, a computational fluid dynamics model based on Navier-Stokes equations is applied to simulate the NLGF flow. The effects of inlet nanoparticles volume fraction and orifice radius on film pressure distribution and load-carrying capacity of the NLGF are calculated. The numerical calculation results show that both of the film land pressure and the maximum film pressure both increase when the nanoparticles are added into gas bearing, and the film pressures increase with the rising of the inlet nanoparticles volume fraction. The nanoparticles have an enhancement effect on load-carrying capacity of the studied bearing, and the enhancement effect becomes greater as the film thickness decrease. Therefore, nanoparticles can effectively improve the lubricating performance of gas bearing. The proposed research provides a theoretical basis for the design of new-type nanoparticles-laden gas film bearings.

关键词： load-carrying capacity pressure distribution nanoparticles-laden gas film computational fluid dynamics

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