{"title":"An Efficient Variation-tolerant Method for RRAM-based Neural Network","authors":"Chenglong Huang, Nuo Xu, Junjun Wang, L. Fang","doi":"10.1109/icet55676.2022.9825190","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9825190","url":null,"abstract":"Resistive Random Access Memory (RRAM) is a promising technology for efficient neural computing systems with low power, non-volatile, and good compatibility with CMOS. The RRAM based crossbar is usually employed to accelerate deep neural networks (DNN) because of its intrinsic characteristic of executing multiplication-and-accumulation (MAC) operation according to Kirchhoff’s law. However, there are some realistic device issues especially the variation, intrinsic stochastic behavior of RRAM devices, resulting in a significant inference accuracy degradation. In this work, we propose an efficient method that employ the scaling coefficients to improve learning capabilities by providing greater model capacity and compensating for the large information loss due to quantization and device variation. Further, the stochastic noise is added to the weights in training for mimicking device variation to enhance the robustness of DNN to the parameter’s variation. We evaluate our method with different mapping methods and initialization conditions of scaling coefficients. Simulation results indicate that our method can rescue the computing accuracy under device variation considering various benchmark datasets(MNIST, Fashion MNIST and CIFAR-10).","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125609652","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}
{"title":"A New Pixel Circuit for Active Matrix Mini&Micro Light Emitting Diodes","authors":"Wenxue Huo, Juncheng Xiao, Fengchao Xu, Hang Zhou","doi":"10.1109/icet55676.2022.9825058","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9825058","url":null,"abstract":"A novel pixel circuit with indium gallium zinc oxide thin-film transistors (IGZO-TFTs) for driving active-matrix Mini& Micro light-emitting diode (AM-MLED) display is proposed. The pixel circuit is built with seven n-type IGZO-TFTs and two capacitors. It can be conducted both under Pulse Amplitude Modulation (PAM) mode and Pulse Width Modulation (PWM) mode, bringing about more gray levels and a better picture quality. The pixel circuit can compensate for the threshold voltage (VTH) deviation of the driving TFT(T2) in the PAM mode through external compensation method. It also can compensate for the threshold voltage (Vth) deviation of the driving TFT (T4) in the PWM mode through the internal compensation circuit. The simulation results show that the pixel circuit under the T2 detecting timing can accurately detect the Vth of T2. On this basis, correct compensation can function well through adjusting data input value by external IC. The simulation results also demonstrate that when the deviation of the T4 threshold voltage occurs ± 1V, the average bit error rate of the light-emitting time is 2%. Therefore, the circuit can effectively compensate the VTH of T4. As a result, the proposed pixel circuit with hybrid driving mode exhibits high immunity to the threshold voltage deviation of T2 and T4, and good brightness uniformity of AM-MLED display can be obtained.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126847893","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}
{"title":"A Novel Dual-Polarized Millimeter Wave Filtering Antenna for 5G Applications","authors":"Zhiwen Qin, Qianrui Shen, Yitong Jin, Shaoshuai Hou, Xiyu Zhu, Guangli Yang","doi":"10.1109/icet55676.2022.9824055","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9824055","url":null,"abstract":"In this paper, a novel dual-polarized filtering antenna (filtenna) is proposed for millimeter-wave (MMW) applications. The principal part of the filtenna is composed of the stacked antennas and eighth-mode substrate integrated waveguide (EMSIW) cavity. The stacked patch antennas can bring other resonance points, so as to broaden the bandwidth of the antenna. To realize the filter function, EMSIW is introduced into the filtenna. A cross element and four-square patches are used for radiation. Short-circuit and open-circuit branches are introduced into the transmission line of the filtenna to generated radiation nulls at higher and lower stopband, which can further improve the suppression ability. The filtenna of our proposed operates at the n258 band (24.25 GHz to 27.5 GHz). The gain at lower stopband decreases over 23 dB and in higher stopband decreases over 15 dB. Meanwhile, the average gain in operation band is about 4 dBi.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114097644","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}
Zhiyuan Weng, Min Kong, G. Zhang, Ying Cheng, Zhigang Weng
{"title":"The Scheme of Two Stage Power Module Low Surge Current Start","authors":"Zhiyuan Weng, Min Kong, G. Zhang, Ying Cheng, Zhigang Weng","doi":"10.1109/icet55676.2022.9824447","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9824447","url":null,"abstract":"For the two-stage power module in the distributed power supply, in order to reduce the current of the high-frequency transformer in the starting process. In this paper, a starting scheme of minimum starting current for two-stage power supply module is studied, which consists of three-phase full control rectifier in the front stage and DC-DC converter in the back stage. The dynamic balance of the primary and secondary voltage of the transformer is realized and the inrush current is suppressed by the method of synchronous starting the former and the latter DC-DC converters. The scheme does not need extra cost, and simulation results show that the scheme can effectively eliminate the input surge of power module.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124948997","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}
Tianyao Zhang, Guang Yao, Qian Wang, Maowen Xie, Yuan Lin
{"title":"Flexible Mechanical Sensor Based on Epitaxial BaTiO3 Films with Biaxial Anisotropy","authors":"Tianyao Zhang, Guang Yao, Qian Wang, Maowen Xie, Yuan Lin","doi":"10.1109/icet55676.2022.9825137","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9825137","url":null,"abstract":"Under the background of silicon-based materials dominating the electronic device market, flexible inorganic epitaxial films provide more creativity for the new generation of flexible electronic devices. Here, utilizing polymer-assisted deposition technique and transfer-print method, epitaxial BaTiO3 (BTO) film has been fabricated on the flexible substrate. As the film can be completely transferred without residual on the substrate, the flexible mechanical sensor has been fabricated utilizing the coplanar dielectric anisotropy of the BTO film, which exhibits good output stability. Moreover, according to the piezoelectric properties of BTO films, one concept of the flexible and stretchable three-dimensional vibration detection sensor is proposed. These results provide a new route to realize low-cost flexible epitaxial ferroelectric film.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125094702","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}
{"title":"Through Glass Via (TGV) Based Microstrip Interdigital Bandpass Filters","authors":"Jing Zhou, Jihua Zhang, Wenlei Li, Weicong Jia, L. Gao, Hongwei Chen, Ting-biao Jiang","doi":"10.1109/icet55676.2022.9825216","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9825216","url":null,"abstract":"Modern RF and microwave communication systems has imposed stringent requirements on filters including compact size, minimal insertion loss, low cost, and high selectivity. Glass has low-loss electrical characteristics and Through Glass Via (TGV) are suitable for advanced packaging and high-frequency applications. In this paper we present a 9th order asymmetrical coupled line interdigital bandpass filter with high selectivity and good stop band attenuation at the cut-off frequency. Interdigital bandpass filter has the characteristics of compact structure. Also the large spacing between the resonator elements, the tolerances required for manufacturing are relatively loose. The device is manufactured using laser processing and micro processing technology based on smooth and thin glass substrate to reduce the insertion loss. The thickness of the glass substrate is 0.45 mm. The loss tangent of the glass substrate is 0.0049. Design is implemented using High Frequency Structural Simulator (HFSS) v19 of ANSYS, a commercial software based on Finite Element Method (FEM). The RF performance of the prepared filter is in good agreement with the RF performance of the simulated filter. The measured insertion loss less than 1 dB with a center frequency of 9.8 GHz. The stop band with rejection peak below -50 dB in close proximity to two transmission poles in the pass band. And the total area of the device is 25.24 mm2.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125628122","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}
Jiaoqi Zhang, Shaoyu Sun, L. Xia, Wengang Wu, Yufeng Jin
{"title":"Study on the Dynamic Ron Degradation in GaN-based Power HEMT","authors":"Jiaoqi Zhang, Shaoyu Sun, L. Xia, Wengang Wu, Yufeng Jin","doi":"10.1109/icet55676.2022.9825118","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9825118","url":null,"abstract":"Dynamic on-state resistance ($mathrm{R}_{mathrm{o}mathrm{n}}$) affects the competitive advantage of GaN technology versus its Si counterparts in power electronics. In this paper, we measure dynamic $mathrm{R}_{mathrm{o}mathrm{n}}$ in situ during circuit operation. A special test circuit including a clamping circuit is designed. It is found that even in well-respected commercial GaN devices, dynamic $mathrm{R}_{mathrm{o}mathrm{n}}$ manifests itself in various ways in circuit, which is hard to detect by traditional semiconductor parameter analyzers. One interesting find is that the gate voltage is shown to affect dynamic $mathrm{R}_{mathrm{o}mathrm{n}}$ differently with different drain voltages. Brief analysis on the mechanism is provided.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116504686","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}
{"title":"Joint Optimization of Computing Offloading in Multi-UAVs-Assisted MEC System","authors":"Shanxin Zhang, Zefeng Jiang, R. Cao","doi":"10.1109/icet55676.2022.9825234","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9825234","url":null,"abstract":"Mobile edge computing (MEC) has been developed as a promising technology to extend various services to the edge of Internet of things. However, it is difficult to deploy MEC devices in special scenarios. Inspired by the high flexibility and controllability of unmanned aerial vehicle (UAV), a multi-UAVs-assisted \"cloud-edge integration\" network architecture for offloading computing intensive tasks in terminal devices is proposed. UAVs can provide computing resources for the users at the edge of the network. Based on this architecture, the computational offloading problem was formulated as a mixed integer nonlinear programming problem, which is usually difficult to get the optimal solution. Therefore, an efficient computing offload algorithm based on deep reinforcement learning (ISDRL) is proposed to obtain the best computing offloading and resource allocation strategy. The numerical results demonstrated that the proposed offloading algorithm has more advantages. In addition, compared with the traditional cloud architecture, the proposed network architecture is more suitable for complex scenarios.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115160137","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}
Hua Tu, Shu Ma, Li-hong Liu, Zhiwu Wang, Xiang Zhang, Lixing Li, TaoKun Lin, Honglei Deng
{"title":"Typical Defects Detection of I&C Cables in Nuclear Power Plants Based on Time-Frequency Domain Reflection Method","authors":"Hua Tu, Shu Ma, Li-hong Liu, Zhiwu Wang, Xiang Zhang, Lixing Li, TaoKun Lin, Honglei Deng","doi":"10.1109/icet55676.2022.9824710","DOIUrl":"https://doi.org/10.1109/icet55676.2022.9824710","url":null,"abstract":"In order to enhance the safe and stable operation of instrumentation and control (I&C) cables in nuclear power plant (NPP), time-frequency reflection method (TFDR) based on SPWVD (Smooth Pseudo Wigner-Ville Distribution) is proposed to detect and locate typical defects in I&C cables. Firstly, the defect information of the cable was obtained by the reflected signal produced by a linear Frequency Modulation (FM) Gaussian signal. Secondly, the receiving signals were processed by SPWVD to obtain time-frequency domain distribution. Thirdly, time-frequency cross-correlation (TFCC) of the incident and reflected signals were analyzed and normalized from the results of time-frequency distribution. Finally, evaluation and localization of typical defects of I&C cables were discussed. In this paper, a 50 meters I&C cable was prepared to simulate several typical defects, including short circuit, open circuit, and metal shield damage. Subsequently, TFDR method was adopted to detect these defects to verify the reliability of this technology. The experiment shows that the cross term generated by WVD reduces the reliability of the detection, SPWVD can effectively eliminate cross term by windowing and convolved process. By adopting TFDR with SPWVD, artificial defects can be accurately detected. The measured positions of the defects are approach to the actual locations of the defects. The measuring errors are less than 2%.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128045102","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}
{"title":"DotMat: Solving Cold-Start Problem and Alleviating Sparsity Problem for Recommender Systems","authors":"Hao Wang","doi":"10.48550/arXiv.2206.00151","DOIUrl":"https://doi.org/10.48550/arXiv.2206.00151","url":null,"abstract":"Cold-start and sparsity problem are two key intrinsic problems to recommender systems. During the past two decades, researchers and industrial practitioners have spent considerable amount of efforts trying to solve the problems. However, for cold-start problem, most research relies on importing side information to transfer knowledge. A notable exception is ZeroMat, which uses no extra input data. Sparsity is a lesser noticed problem. In this paper, we propose a new algorithm named DotMat that relies on no extra input data, but is capable of solving cold-start and sparsity problems. In experiments, we prove that like ZeroMat, DotMat can achieve competitive results with recommender systems with full data, such as the classic matrix factorization algorithm.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133894726","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}