IEICE Electron. Express最新文献

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An exponential function accelerator with radix-16 algorithm for spiking neural networks 基于基数-16算法的脉冲神经网络指数函数加速器
IEICE Electron. Express Pub Date : 2023-01-01 DOI: 10.1587/elex.19.20220393
Chenxiao Lin, Qingyang Zeng, D. Shang
{"title":"An exponential function accelerator with radix-16 algorithm for spiking neural networks","authors":"Chenxiao Lin, Qingyang Zeng, D. Shang","doi":"10.1587/elex.19.20220393","DOIUrl":"https://doi.org/10.1587/elex.19.20220393","url":null,"abstract":"A range reduction method for shift-and-add algorithms for exponential functions is proposed in this paper. An exponential function accelerator with this method and radix-16 shift-and-add algorithm has been implemented in SMIC 55 nm CMOS process. Compared with the existing method, the proposed method reduces the latency (cycles) by 33% and 20% for 16 and 32-bit precision results, respectively; thereby increasing the throughputto50Mexp/sandreducingthepowerconsumptionto4.6pJ/exp.Inaddition,thismethodsavesdieareasincenoarithmeticunitsareadopted.Thisexponentialacceleratorissupposedtobeusedinaneuromorphicchipforspikingneuralnetworkmodeling.","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"101 1","pages":"20220393"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77420277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A five-level inverter based on differential structure 一种基于差动结构的五电平逆变器
IEICE Electron. Express Pub Date : 2023-01-01 DOI: 10.1587/elex.20.20220555
Shaoru Zhang, Yang Liu, Xiuju Du, Yanhua Zhang, Wenxiu Yang, Yikun Jia, Jielu Zhang, F. Luo
{"title":"A five-level inverter based on differential structure","authors":"Shaoru Zhang, Yang Liu, Xiuju Du, Yanhua Zhang, Wenxiu Yang, Yikun Jia, Jielu Zhang, F. Luo","doi":"10.1587/elex.20.20220555","DOIUrl":"https://doi.org/10.1587/elex.20.20220555","url":null,"abstract":"","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"35 1","pages":"20220555"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73743201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FBEL: Enhanced LLR optimization algorithm based on the VSER prediction by flag bits in the bit-flipping scheme FBEL:基于反转方案中标志位预测VSER的增强LLR优化算法
IEICE Electron. Express Pub Date : 2023-01-01 DOI: 10.1587/elex.20.20230113
Bo Zhang, Qi Wang, Xiaolei Yu, Qianhui Li, Jing He, Xianliang Wang, Qian Zhao, Xuhong Qiang, Z. Huo, Tianchun Ye
{"title":"FBEL: Enhanced LLR optimization algorithm based on the VSER prediction by flag bits in the bit-flipping scheme","authors":"Bo Zhang, Qi Wang, Xiaolei Yu, Qianhui Li, Jing He, Xianliang Wang, Qian Zhao, Xuhong Qiang, Z. Huo, Tianchun Ye","doi":"10.1587/elex.20.20230113","DOIUrl":"https://doi.org/10.1587/elex.20.20230113","url":null,"abstract":"","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"47 25","pages":"20230113"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91420344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
UWB MIMO optical transparent antenna based on ITO film 基于ITO薄膜的超宽带MIMO光学透明天线
IEICE Electron. Express Pub Date : 2023-01-01 DOI: 10.1587/elex.20.20230022
Yuzhong Yao, Yuesheng Shao, Jiliang Zhang, J. Zhang
{"title":"UWB MIMO optical transparent antenna based on ITO film","authors":"Yuzhong Yao, Yuesheng Shao, Jiliang Zhang, J. Zhang","doi":"10.1587/elex.20.20230022","DOIUrl":"https://doi.org/10.1587/elex.20.20230022","url":null,"abstract":"","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"22 1","pages":"20230022"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91533866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A low temperature coefficient wide temperature range bandgap reference with high power supply rejection 具有高电源抑制的低温度系数、宽温度范围带隙基准
IEICE Electron. Express Pub Date : 2023-01-01 DOI: 10.1587/elex.20.20230104
J. Qu, Chenjian Wu
{"title":"A low temperature coefficient wide temperature range bandgap reference with high power supply rejection","authors":"J. Qu, Chenjian Wu","doi":"10.1587/elex.20.20230104","DOIUrl":"https://doi.org/10.1587/elex.20.20230104","url":null,"abstract":"","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"4 1","pages":"20230104"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79567682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of a microcirculatory windkessel model using photoplethysmography with green light: A pilot study 用绿光光容积脉搏图分析微循环风帆模型:一项初步研究
IEICE Electron. Express Pub Date : 2022-08-01 DOI: 10.1587/elex.19.20220371
Akio Tanaka
{"title":"Analysis of a microcirculatory windkessel model using photoplethysmography with green light: A pilot study","authors":"Akio Tanaka","doi":"10.1587/elex.19.20220371","DOIUrl":"https://doi.org/10.1587/elex.19.20220371","url":null,"abstract":"In this study, a vasomotion quantification method using a photoplethysmography prototype, which performs near-infrared spectroscopy in combination with green light, is proposed. A structure that suppresses the motion artifact and that is held by the eyeglasses on the back of the ear enables the relative concentration changes of total hemoglobin and pulse wave amplitude to be measured during exercise with and without the presence of wind impacting the face. We established a microcirculatory windkessel model including arteriovenous anastomoses estimated from the blood flow changes in the depth direction that were acquired using three wavelengths of light and reproduced the vasomotion on a computer. The values predicted by the model were in good agreement with the measured values. The extracted vasomotion can be used to understand autonomic control by the central nervous system.","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"1 1","pages":"20220371"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83004305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Research on MPPT of photovoltaic system based on PSO with time-varying compression factor 基于时变压缩因子粒子群的光伏系统最大功率跟踪研究
IEICE Electron. Express Pub Date : 2022-01-01 DOI: 10.1587/elex.19.20220165
Jianhua Deng, Yanping Wang
{"title":"Research on MPPT of photovoltaic system based on PSO with time-varying compression factor","authors":"Jianhua Deng, Yanping Wang","doi":"10.1587/elex.19.20220165","DOIUrl":"https://doi.org/10.1587/elex.19.20220165","url":null,"abstract":"When the photovoltaic system is put into use, some natural objects will cause partial shadows on the photovoltaic modules. And in this case, the output characteristics of the photovoltaic array will change from the original \"single peak\" to \"multi-peak\", and the power of the photovoltaic array will have multiple extreme values, which will increase the difficulty of tracking the maximum power of the photovoltaic array. The traditional maximum power point tracking (MPPT) algorithm is no longer applicable. Most of them fall into the local maximum power and cannot find the global maximum power. Although the particle swarm optimization algorithm (PSO) has a certain ability to solve the global optimization problem, the standard particle swarm optimization algorithm can’t be regarded as a complete global optimization algorithm. Since the power output curve of the photovoltaic array is severely non-linear in the shaded situation, the standard particle swarm optimization algorithm may also fall into a local optimum and fail to find the global optimum. Compared with the standard particle swarm optimization algorithm, the particle swarm optimization algorithm with time-varying compression factor proposed in this paper can better balance the relationship between global search and local search, and can effectively avoid falling into the local optimal value and not finding it. To the correct maximum power point, while also increasing the speed of convergence. Comparing the method proposed in this paper with the standard particle swarm algorithm through experiments, the results show that the method proposed in this paper is of great significance for improving the efficiency of photovoltaic systems under partial shadow conditions.","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"61 1","pages":"20220165"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75380827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
An analytical model of transmitting arrays with excitation perturbations for microwave power transmission 微波功率传输中具有激励扰动的发射阵列解析模型
IEICE Electron. Express Pub Date : 2022-01-01 DOI: 10.1587/elex.19.20220396
Shuo Zhang, Shunxi Lou, Wei Wang, Yuanchen Zeng, Xiang Gao
{"title":"An analytical model of transmitting arrays with excitation perturbations for microwave power transmission","authors":"Shuo Zhang, Shunxi Lou, Wei Wang, Yuanchen Zeng, Xiang Gao","doi":"10.1587/elex.19.20220396","DOIUrl":"https://doi.org/10.1587/elex.19.20220396","url":null,"abstract":"An analytical model is proposed to calculate the performance on beam collecting efficiency (BCE) of transmitting arrays with excitation errors for microwave power transmission (MPT). Due to the inconsistent output of power amplifiers and the uncertainty of the joint loss of radio frequency (RF) device, the small perturbations will be brought into excitation amplitudes and phases, which will decrease the BCE. This analytical model involves the use of a Taylor series expansion to account for small perturbations in the excitation errors. The mathematical model between the statistical information of excitation perturbations and BCE is directly established. To fully prove the accuracy of the given model, numerous random samples will be used to compare the results of the proposed model and Monte Carlo simulation (MCS). Compared with the MCS, the proposed model does not require much-repeated calculation. The proposed method can be applied at the antenna design stage to effectively evaluate the effect of excitation perturbations on the BCE.","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"26 1","pages":"20220396"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75489458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A 280nW leakage-ratio-based CMOS temperature sensor with supply/clock sensitivity suppression 基于280nW泄漏比的CMOS温度传感器,具有电源/时钟灵敏度抑制
IEICE Electron. Express Pub Date : 2022-01-01 DOI: 10.1587/elex.19.20220223
Hangyi Lu
{"title":"A 280nW leakage-ratio-based CMOS temperature sensor with supply/clock sensitivity suppression","authors":"Hangyi Lu","doi":"10.1587/elex.19.20220223","DOIUrl":"https://doi.org/10.1587/elex.19.20220223","url":null,"abstract":"","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"11 4 1","pages":"20220223"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75529683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A 21.56dBm four-way current-combining power amplifier for Ka-band applications in 65-nm CMOS 一个21.56dBm四路电流组合功率放大器,用于65纳米CMOS的ka波段应用
IEICE Electron. Express Pub Date : 2022-01-01 DOI: 10.1587/elex.18.20210286
Zhiqiang Wang, Xin Liu, Zhiqiang Li, Xiaosong Wang, Minghua Wang, Quan Li, Yan Li, Yu Liu
{"title":"A 21.56dBm four-way current-combining power amplifier for Ka-band applications in 65-nm CMOS","authors":"Zhiqiang Wang, Xin Liu, Zhiqiang Li, Xiaosong Wang, Minghua Wang, Quan Li, Yan Li, Yu Liu","doi":"10.1587/elex.18.20210286","DOIUrl":"https://doi.org/10.1587/elex.18.20210286","url":null,"abstract":"This paper presents a four-way current-combining Ka-band power amplifier(PA) in 65-nm CMOS technology. A symmetrical, transmission line based four-way current combiner, together with output transformers, is used to transfer the high load impedance(4* 𝑍 𝐿 ) to the desired 𝑍 𝑜𝑝𝑡 foreachpowerunitcell.Besides,bothinterstage/inputflexible matching transformers and the power splitter are optimized to improve the performance. Based on the methodology mentioned above, the power amplifier demonstrates a small-signal gain of about 24.12 dB, a saturated output power of 21.56 dBm, and a peak power-added efficiency of 27.3% at 35GHz.","PeriodicalId":13437,"journal":{"name":"IEICE Electron. Express","volume":"1 1","pages":"20210286"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78445095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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