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5th International Conference on Electronic communication and Artificial Intelligence, ICECAI 2024

作者： Li, Manyi Qin, Kun Bofan Tang, Jiacheng Huiminliu Engineering Research Center of Optoelectronic Devices and Communication Technology Tianjin University of Technology Ministry of Education School of Integrated Circuit Science and Engineering Tianjin University of Technology China Meraki Integrated Corpline Shenzhen China

ISBN: (纸本)9798350386943

With the development of science and technology, Sigma-Delta (∑-A) ADCs are widely used in various fields of electronics with their flexible advantages. As an essential component of a Sigma-Delta ADC, digital filters directly and significantly impact the ADC's accuracy, delay, and power consumption. This paper presents a multistage digital filter for 18-bit ∑-A ADCs;the filter uses a cascade of multiple filters, including cosine-like (CL), cascaded integral comb (CIC), interpolated second-order polynomial (ISOP), and half-band (HB) filters, to enhance the ADC's accuracy. The filter's order and downsampling multiplier are designed using canonical signed digit (CSD) and common subexpression (CSE) to reduce hardware resource consumption and improve computational performance. The ADC is synthesized using 0.18 μm CMOS technology, achieving an output SNDR of 96.26 dB, ENOB of 15.73 bits, total power of 518.35 uW, and a Digital filter power of 82.93 uW, which effectively reduces the power consumption while improving the accuracy. © 2024 IEEE.

关键词： Digital filters

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Split-Length Compensation LDO with Low Quiescent Current 5

Split-Length Compensation LDO with Low Quiescent Current

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5th International Conference on Electronic communication and Artificial Intelligence, ICECAI 2024

作者： Tang, Jiacheng Bofan Liu, Huimin Qin, Kun Li, Manyi Tianjin University of Technology Ministry of Education School of Integrated Circuit Science and Engineering Tianjin University of Technology Engineering Research Center of Optoelectronic Devices and Communication Technology China Meraki Integrated Corpline Shenzhen China

ISBN: (纸本)9798350386943

An LDO with an internally compensated super source follower and adopted Split-Length Compensation technology indirectly compensates loop stability is proposed. The super source follower is used to reduce the output impedance of the LDO, enhancing its carry-under-Ioad capability. The loop is then converted to a multi-zero-pole system through techniques such as Split-length compensation, enabling the LDO to achieve stability and reliability under varying loads. The LDO proposed in this study was designed using a 110nm CMOS process. Simulation results indicate that the output voltage is 1.85 V when supplied with 3.3 V and TT process angle-the LDO with a low quiescent current of 57μA. The load regulation is 0.00769 mV/mA, and the line regulation is 0.48 mV/V. The system demonstrates optimal phase margins and circuit stability under all operational conditions. © 2024 IEEE.

关键词： Poles and zeros

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Performance Analysis of an Energy Efficient 1-Bit Hybrid Full Adder 2

Performance Analysis of an Energy Efficient 1-Bit Hybrid Ful...

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2nd International Conference on Networking, Embedded and Wireless Systems, ICNEWS 2024

作者： Devika, B. Dhathri, N. Priya Darshini, D. Sarayu, T. Sahoo, Satyajeet Samantaray, Aswini K. Vignan's Foundation for Science Technology and Research Department of Electronic and Communication Engineering Vadlamudi Guntur522213 India Manipal Institute of Technology Manipal Accademy of Higher Education Department of Electronics and Communication Engineering Karnataka Manipal Bengaluru576104 India

ISBN: (纸本)9798350367461

This paper presents the design and analysis of hybrid adders utilizing transmission gate, CMOS logic, and pass transistor logic. In this work, simulation is conducted using 45nm technology. The adder architecture comprises three main modules: XOR, sum, and carry. The XOR module employs transmission gate logic and CMOS logic, while the sum module integrates transmission gate logic and XOR/XNOR operations. The carry module is built using pass transistor logic. An in-depth analysis was conducted on the designed hybrid adder circuit, with meticulous measurements and evaluations of its power consumption, delay, and power-delay product (PDP) to provide comprehensive insights into its performance and efficiency. The results demonstrate the effectiveness of the hybrid adder architecture in meeting the demands of modern digital systems while leveraging the benefits of advanced semiconductor manufacturing processes. © 2024 IEEE.

关键词： CMOS integrated circuits

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A High-Precision, Low-Temperature Drift Relaxation Oscillator Design 5

A High-Precision, Low-Temperature Drift Relaxation Oscillato...

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5th International Conference on Electronic communication and Artificial Intelligence, ICECAI 2024

作者： Qin, Kun Fan, Bo Liu, Huimin Tang, Jiacheng Li, Manyi Engineering Research Center of Optoelectronic Devices and Communication Technology Tianjin University of Technology Ministry of Education School of Integrated Circuit Science and Engineering Tianjin University of Technology China Meraki Integrated Corpline Shenzhen China

ISBN: (纸本)9798350386943

This paper presents a new relaxation oscillator designed as a phase-locked loop reference frequency. The conventional relaxation oscillator is a low-temperature-drift simple structure relaxation oscillator, which is susceptible to temperature-induced fluctuations in the output frequency. To address this issue, a feedback loop is incorporated into the conventional oscillator structure and a frequency sampling module is employed to sample the frequency signal. The sampled voltage is then fed back to the operational amplifier port for feedback comparison. When the system temperature changes, the sampling voltage can be stabilised near the reference voltage. Once the system is stabilised, the output current from the operational amplifier is fed back to the oscillator to compensate for frequency. This structure eliminates the need to consider the effects of the comparator offset voltage. Ultimately, its stability is only affected by resistance and capacitance, and not by temperature. The innovation of this paper is the simplicity of the structure and the low sensitivity of the frequency to temperature and voltage compared to the conventional structure. In this paper, a high-precision, low-temperature-drift relaxation oscillator is realised using a 0.11-micron process. Simulation results show that the output frequency is 10 MHz with a supply voltage of 1.2 V and a power consumption of 198 μW. The temperature coefficient of the output frequency is 41.04×106/°C over the temperature range of -40 °C to 150 °C, and the variation of the output frequency is less than 0.15% over the supply voltage range of The output frequency is also very low over the temperature range of -40 °C to 150 °C, and over the supply voltage range of 0.9 V to 1.8 *** 0.15 %. © 2024 IEEE.

关键词： Operational amplifiers

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Enhancing thermoelectric performance in P-type Mg_(3)Sb_(2)-based Zintls through optimization of band gap structure and nanostructuring

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Journal of Materials science & technology 2024年第3期170卷 25-32页

作者： Yi-bo Zhang Ji-Sheng Liang Chengyan Liu Qi Zhou Zhe Xu Hong-bo Chen Fu-cong Li Ying Peng Lei Miao Guangxi Key Laboratory of Information Material Engineering Research Center of Electronic Information Materials and DevicesMinistry of EducationSchool of Material Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004China Guangxi Key Laboratory for Relativity Astrophysics Center on Nanoenergy ResearchGuangxi Key Laboratory of Processing for Nonferrous Metal and Featured MaterialsSchool of Physical Science&TechnologyGuangxi UniversityNanning 530004China Guangxi Key Laboratory of Precision Navigation Technology and Application Guilin University of Electronic TechnologySchool of Information and CommunicationGuilin 541004China

P-type Mg_(3)Sb_(2)-based Zintls have attracted considerable interest in the thermoelectric(TE)field due to their environmental friendliness and low ***,compared to their n-type counterparts,they show relatively low TE performance,limiting their application in TE *** this work,we simultaneously introduce Bi alloying at Sb sites and Ag doping at Mg sites into the Mg_(3)Sb_(2)to coopera-tively optimize the electrical and thermal properties for the first time,acquiring the highest ZT value of∼0.85 at 723 K and a high average ZT of 0.39 in the temperature range of 323-723 K in sample Mg_(2.94)Ag_(0.06)Sb_(1.9)Bi_(0.1).The first-principle calculations show that the codoping of Ag and Bi can shift the Fermi level into the valence band and narrow the band gap,resulting in the increased carrier concentration from 3.50×10^(17)cm^(-3)in the reference Mg 3 Sb 0.9 Bi 0.1 to∼7.88×10^(19)cm^(-3)in sample Mg 2.94 Ag 0.06 Sb 0.9 Bi *** a result,a remarkable power factor of∼778.9μW m^(-1)K^(-2)at 723 K is achieved in sample Mg 2.94 Ag 0.06 Sb 0.9 Bi ***,a low lattice thermal conductivity of∼0.48 W m^(-1)K^(-1)at 723 K is also obtained with the help of phonon scattering at the distorted lattice,point defects,and nano-precipitates in sample Mg 2.94 Ag 0.06 Sb 0.9 Bi *** synergistic effect of using the multi-element co-doping/-alloying to optimize electrical properties in Mg_(3)Sb_(2)holds promise for further improving the TE performance of Zintl phase materials or even others.

关键词： Thermoelectric materials Band engineering Nanostructuring P-type Mg_(3)Sb_(2) Ag and Bi Co-doping

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Temperature-insensitive sensor for glucose brix measurement based on compact spindle-shaped structure with two-mode fiber

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Optoelectronics Letters 2022年第12期18卷 737-742页

作者： DONG Miaoyun TONG Zhengrong ZHANG Weihua LI Peng WU Meng TIAN Xue Engineering Research Center of Optoelectronic Devices and Communication Technology Ministry of EducationTianjin Key Laboratory of Film Electronic and Communication DevicesSchool of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin300384China

A temperature-insensitive sensor for glucose brix measurement based on compact spindle-shaped structure with two-mode fiber(TMF) is proposed. Due to the bending of optical fiber caused by flame baking, some of the light energy transmitted in the core leaks into the cladding area as an evanescent wave, which excites the higher-order cladding mode of the sensor. The experimental results show that when the length of TMF is 3 cm and the bending diameter is 4 mm, the maximum glucose brix sensitivity of the sensor is 0.368 nm/% from 0 to 21%. The sensor is insensitive to temperature from 10 °C to 50 °C, which can avoid the problem of temperature cross-sensitivity. A compact spindle-shaped sensor is a potential effective sensor with a simple structure, easy fabrication and low cost. The sensor can be used to detect glucose content in areas such as crops quality assessment and the research of pharmacy and bioengineering.

关键词： shaped fiber mode

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Superior multiphase interfaces in AgCuTe-based composite with significantly enhanced thermoelectric properties

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Journal of Advanced Ceramics 2023年第8期12卷 1511-1520页

作者： Wenpei Li Zhonghai Yu Chengyan Liu Ying Peng Baoquan Feng Jie Gao Guojing Wu Xiaobo Bai Junliang Chen Xiaoyang Wang Lei Miao Guangxi Key Laboratory of Information Materials Electronical Information Materials and Devices Engineering Research Center of Ministry of EducationSchool of Materials Science and EngineeringGuilin University of Electronic TechnologyGuilin 541004China Guangxi Key Laboratory of Precision Navigation Technology and Application School of Information and CommunicationGuilin University of Electronic TechnologyGuilin 541004China

It is common sense that a phase interface(or grain boundary)could be used to scatter phonons in thermoelectric(TE)materials,resulting in low thermal conductivity(k).However,a large number of impurity phases are always so harmful to the transport of carriers that poor TE performance is ***,we demonstrate that numerous superior multiphase(AgCuTe,Ag_(−2)Te,copper telluride(Cu_(2)Te and Cu_(2−x)Te),and nickel telluride(NiTe))interfaces with simultaneous strong phonon scattering and weak electron scattering could be realized in AgCuTe-based TE *** to the similar chemical bonds in these phases,the depletion region at phase interfaces,which acts as carrier scattering centers,could be ***,the power factor(PF)is obviously enhanced from~609 to~832μW·m^(−1)·K^(−2),and k is simultaneously decreased from~0.52 to~0.43 W·m^(−1)·K^(−1) at 636 ***,a peak figure of merit(zT)of~1.23 at 636 K and an average zT(zTavg)of~1.12 in the temperature range of 523–623 K are achieved,which are one of the best values among the AgCuTe-based TE *** study could provide new guidance to enhance the performance by designing superior multiphase interfaces in the TE materials.

关键词： thermoelectric(TE)materials AgCuTe phase interface carrier scattering phonon scattering

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A Review on DeepLungNet: CNN-Based Lung Cancer Detection Techniques Using CT Images

A Review on DeepLungNet: CNN-Based Lung Cancer Detection Tec...

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2024 International Conference on Advances in Data Engineering and Intelligent Computing Systems, ADICS 2024

作者： Nair, Surabhi S. John, Asha Susan Raju, Juby Musaliar College Of Engineering And Technology Department Of Electronics And Communication Engineering Pathanamthitta India Kalasalingam Academy Of Research And Education Department Of Electronics And Communication Engineering Virudhanagar Tamil Nadu Krishnan kovil626 126 India Hindustan Institute Of Technology And Science Department Of Computer Science Engineering TamilNadu India

ISBN: (纸本)9798350364828

The disease known as lung cancer, which is common and frequently deadly, starts in the cells of the lungs and causes symptoms like exhaustion, chest pain, and persistent coughing. Since small cell lung cancer (SCLC) is less frequent but more dangerous than non-small cell lung cancer (NSCLC), knowledge of its causes, including smoking, pollution, and genetic factors, is essential. Survival rates are greatly increased by early identification by about 20%. This study comprehensively analyzes deep learning and machine learning models-based lung cancer prediction methods from 2016 to 2023. The review emphasizes how well these models work to achieve greater accuracy. Expanding on this, a new method is suggested that combines data augmentation and denoising preprocessing methods with a CNN in a ResNet architecture for classification. The goal of this hybrid model is to maintain and improve accuracy levels in the identification of benign and malignant lung pictures. This methodology offers promising promises for more accurate and reliable lung cancer prediction by utilizing advances in both preprocessing and classification techniques. © 2024 IEEE.

关键词： Diseases

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High sensitivity SPR refractive index sensor with high resolution based on anti-resonance fiber

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Optoelectronics Letters 2022年第4期18卷 204-209页

作者： ZHANG Ailing LI Yueting PAN Fei PAN Honggang LIU Fei Engineering Research Center of Optoelectronic Devices&Communication Technology Ministry of EducationTianjin Key Laboratory of Film Electronic and Communication DevicesSchool of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin 300384China

We proposed a surface plasmon resonance(SPR)refractive index sensor based on hollow-core anti-resonance fiber(HC-ARF).Gold was filled in two symmetric cladding tubes of the fiber,while the analyte was filled in central air *** sensing performance was investigated by the finite element method(FEM).Results show that two resonance peaks(a crossing point around 1030 nm and an anti-crossing region around 1065 nm)appear for x-polarization(x-pol)core mode coupling with the surface plasmon polariton(SPP)***,the sensitivity was also *** sensitivity increased with the increase of cladding tube thickness *** sensor with thickness t=1.7μm gave a wavelength sensitivity of 7350—14790 nm/RIU in the refractive index range of 1.33—1.45 with resonance wavelength from 1900 nm to 450 ***,the resolution of 10^(-6) RIU was *** to high sensitivity and resolution,the proposed sensor has potential applications in glucose detection.

关键词： fiber polarization refractive

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Optimization of Macro Placement Using Genetic Algorithm 6

Optimization of Macro Placement Using Genetic Algorithm

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6th International Conference on communications, Information System and Computer Engineering, CISCE 2024

作者： Zhang, Xiaoxue Liu, Huimin Dou, Qiang Ma, Zhuo Wei, Longwen School of Integrated Circuit Science and Engineering Tianjin University of Technology Engineering Research Center of Optoelectronic Devices and Communication Technology Tianjin University of Technology Ministry of Education Tianjin China Phytium Technology Co. Ltd. Tianjin China

ISBN: (纸本)9798350353174

This thesis presents a novel approach to macro-layout in physical design, combining genetic algorithms with traditional design techniques. Genetic algorithms simulate the process of genetic evolution by natural selection, whereby the most environmentally adapted individuals are obtained through the evolution of reproduction from generation to generation. In this paper, the macro layout is represented by individuals, and the characteristics of the macro layout are used to constrain it. In the algorithm presented in this paper, each individual's adaptation action to their environmental context is used to represent the line length. The smaller the line length, the greater the macro layout's conformity to its constraints. Finally, the physical design of different macro layouts is compared with the timing obtained by STA tool. The final conversion time violation of macro layout applying the algorithm of this paper achieved an average reduction of 6.8% in violation and 17% in the number of violation paths compared to manual macro layout. The macro layout has been optimized. © 2024 IEEE.

关键词： Genetic algorithms

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