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Quantitative Representation of Frequency Dispersion of Primary Parameters of Shielded-FPC 屏蔽fpc主要参数频散的定量表示
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888415
Taiki Yamagiwa, Y. Kayano, Y. Kami, F. Xiao, H. Inoue
{"title":"Quantitative Representation of Frequency Dispersion of Primary Parameters of Shielded-FPC","authors":"Taiki Yamagiwa, Y. Kayano, Y. Kami, F. Xiao, H. Inoue","doi":"10.1109/APEMC53576.2022.9888415","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888415","url":null,"abstract":"The purpose of this paper is to quantitatively express the frequency dispersion of primary parameters of flexible printed circuits with a thin conductive shield. Unlike basic transmission lines, the physical phenomenon of theses frequency dispersion characteristics has not been completely clarified and cannot be predicted quantitatively. The quantitative representation would be an important design guide for implementing conductive shields on the transmission lines. This paper provides a quantitative representation method of the frequency dispersion by fitting mathematical expression. It is demonstrated that the frequency dispersion of resistance and inductance caused by implementing the thin conductive shield can be expressed quantitatively as sigmoid functions.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129068504","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
PCB-Level Thermal & SI/PI Co-Analysis: Progress and Directions pcb级热与SI/PI联合分析:进展与方向
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888294
Zhixin Xia, Yunlong Luo, Y. Qi, Jun Fan, X. Ye
{"title":"PCB-Level Thermal & SI/PI Co-Analysis: Progress and Directions","authors":"Zhixin Xia, Yunlong Luo, Y. Qi, Jun Fan, X. Ye","doi":"10.1109/APEMC53576.2022.9888294","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888294","url":null,"abstract":"As large-scale integrated circuits have become increasingly powerful, the power consumption of products has gradually increased, which has caused the temperature on PCB to rise and further aggravated the signal integrity problems in high-speed digital systems. Therefore, it is essential to analyze and solve those problems caused by the thermal effect on the PCB. This paper briefly overviewed the progress and future directions of thermal & signal integrity/power integrity (SI/PI) co-analysis, analyzed the measurement techniques of the dielectric properties of laminate materials, and discussed the influence of temperature on high-speed PCB transmission performance.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129154911","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
Time Domain Hybrid Method for the Coupling Analysis of Transmission Lines in Shielded Enclosure Excited by Leakage EM Fields 泄漏电磁场激励下屏蔽罩内传输线耦合分析的时域混合方法
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888544
Zhihong Ye, Changchang Lu, Xiaolin Wu
{"title":"Time Domain Hybrid Method for the Coupling Analysis of Transmission Lines in Shielded Enclosure Excited by Leakage EM Fields","authors":"Zhihong Ye, Changchang Lu, Xiaolin Wu","doi":"10.1109/APEMC53576.2022.9888544","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888544","url":null,"abstract":"This paper presents an efficient time domain hybrid method, consisting of thin wire finite-difference time-domain (FDTD) method, transmission line (TL) equations, interpolation schemes and an auto mesh generator technique, which can be well applied for the coupling problem of transmission lines in shielded enclosure excited by leakage electromagnetic (EM) fields created by some sensitive circuits. In this method, the radiation of these leakage EM fields are simulated by the thin wire FDTD method with auto mesh generation technique firstly. Then the TL equations combined with interpolation schemes are utilized to construct the coupling model of multi-conductor transmission lines (MTLs) excited by these leakage EM fields. Finally, the TL equations are solved by the difference scheme of FDTD to obtain the voltages and currents on the MTLs and terminal loads. The significant feature of this hybrid method is that it can realize the co-simulation of space EM field radiation and transient responses on the MTLs. The accuracy and efficiency of this presented method are verified via the numerical simulation of multi-conductor transmission lines excited by these leakage EM fields in a shielded enclosure by comparing with the FDTD method.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124690265","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
Method of Controlling the Single-Ended Clock Bus Interference to the RF Bands 控制单端时钟总线对射频频段干扰的方法
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888453
Wu Tiankai, Guo Minmin
{"title":"Method of Controlling the Single-Ended Clock Bus Interference to the RF Bands","authors":"Wu Tiankai, Guo Minmin","doi":"10.1109/APEMC53576.2022.9888453","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888453","url":null,"abstract":"The low-speed single-ended clock bus is widely used in automotive electronic control transmission, audio、 video transmission, phased array radar beam control transmission and other fields. It is used as the data synchronization clock of the SPI interface to realize the data synchronization transmission of multiple terminal nodes. In order to improve the transmission distance and multi-load driving capability of the clock bus, a non-linear switch driving circuit is usually used for signal buffer driving. After driving, the clock bus signal has a rich high-order harmonic spectrum and generates energy radiation. The electromagnetic radiation frequency band mainly covers the frequency band above 30MHz, and may reach or exceed the electromagnetic radiation index threshold required by the system, causing interference to radiation-sensitive equipment such as high-sensitivity receivers. The principle of high-order harmonic generation is that a clock signal similar to a square wave propagates in the medium in the form of a wave, and the rich multiple harmonics contained in its frequency spectrum radiate energy outward through the fringe field of the transmission line. This paper proposes a method of digital waveform generation, which effectively suppresses the radiation of higher harmonics by generating approximately linear clock signals. Simulation and experimental verification prove that this method can significantly reduce the synchronous serial data clock bus in a certain system. Harmonic radiation energy, in the high-order harmonic spectrum of the clock, noise peaks are effectively suppressed.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114754955","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
Effects of Unbalanced Currents on Mutual Coupling of Orthogonal Dipole Antennas 不平衡电流对正交偶极子天线相互耦合的影响
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888681
Zitong Wang, Qi Wu
{"title":"Effects of Unbalanced Currents on Mutual Coupling of Orthogonal Dipole Antennas","authors":"Zitong Wang, Qi Wu","doi":"10.1109/APEMC53576.2022.9888681","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888681","url":null,"abstract":"In this paper, the effects of unbalanced currents on mutual coupling of two orthogonally and closely placed dipole antennas are investigated. Two orthogonal dipoles usually have low mutual coupling but the isolation between them deteriorates seriously when their relative position changes. The worst case has only an isolation of 8.2 dB but the underlined physics are not well disclosed. In this paper, it is revealed that mutual coupling of the orthogonally dipole antennas is mainly attributed to the appearance of unbalanced currents on the surface of antennas. The full-wave results verify the discovered phenomenon in this paper.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128099811","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
Enhanced Transmission Model for Predicting Coupling Between Electromagnetic Field and a Twisted-Wire Pair of Complex Dielectric Coatings 复杂介质涂层中电磁场与双绞线对耦合预测的增强传输模型
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888383
Zhihao Xi, Tao Liang, Yan-zhao Xie, Jie Guo
{"title":"Enhanced Transmission Model for Predicting Coupling Between Electromagnetic Field and a Twisted-Wire Pair of Complex Dielectric Coatings","authors":"Zhihao Xi, Tao Liang, Yan-zhao Xie, Jie Guo","doi":"10.1109/APEMC53576.2022.9888383","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888383","url":null,"abstract":"In this paper, an enhanced electromagnetic field coupling to twisted wire pair (TWP) model is developed and applied for predicting the terminal voltage/current responses. In contrast to the classic transmission line (TL) model, the proposed approach takes account the perturbation effect on external field due to the presence of coatings by assigning a weight (coating coefficient Cd) to the source terms contributed by transversal field component. The case study shows a significant improvement of the modeling accuracy with respect to classic TL model.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128149096","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
Performance of 10 kV Metal-Oxide Arresters Excited by High-Altitude Electromagnetic Pulse 高空电磁脉冲激励10kv金属氧化物避雷器的性能研究
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888301
Yan-peng Ge, Yan-zhao Xie, Yuying Wu, Yubo Wang, Ze-tong Li, Tao Liang
{"title":"Performance of 10 kV Metal-Oxide Arresters Excited by High-Altitude Electromagnetic Pulse","authors":"Yan-peng Ge, Yan-zhao Xie, Yuying Wu, Yubo Wang, Ze-tong Li, Tao Liang","doi":"10.1109/APEMC53576.2022.9888301","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888301","url":null,"abstract":"For acquiring the performance of 10 kV metal-oxide arresters (MOAs) for power systems under high altitude electromagnetic pulses (HEMP), this research has designed a series of tests to analyze the residual voltage of the arresters when changing the number of arresters in parallel. During the test, two types of arresters have been selected, one’s inner disc diameter is 122 mm and the other’s is 40 mm. There are five arresters of each type. When the load of the pulse generator is 60 Ω, the output is a double exponential waveform, which risetime is 20 ns and the full width at half maximum is between 500~550 ns. Also, the peak value of the output current can be adjusted from 2.5 to 5 kA. To simulate the working condition, arresters have been connected to a 10 kV transformer. The test results show that arresters connected in parallel can decrease the residual voltage and the current flowing into the transformer effectively.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"243 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132498349","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
The Research on Frequency-Domain Characteristics of Electromagnetic Pulse 电磁脉冲的频域特性研究
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888729
Han Jingyu, Kong Yaohui, Zhang Fanzhong, Xie Feng, Dong Lifeng, Wei Jing, Liu Ying
{"title":"The Research on Frequency-Domain Characteristics of Electromagnetic Pulse","authors":"Han Jingyu, Kong Yaohui, Zhang Fanzhong, Xie Feng, Dong Lifeng, Wei Jing, Liu Ying","doi":"10.1109/APEMC53576.2022.9888729","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888729","url":null,"abstract":"In this paper, Frequency-Domain characteristics of three different sets of High-altitude electromagnetic pulse (HEMP) are calculated by Fourier transform. Results prove that the frequency spectrum characteristics, normalization cumulative power energy and power energy spectrum density are relationship with the HEMP waveform parameter. It is possible to be helpful to the HEMP coupling research and the HEMP protection techniques research. Furthermore, the result can be used to expand HEMP generator application in the civil system by changing HEMP waveform parameters. It is possible to use the results to model high-power electromagnetic devices that is non-standard and has short pulse duration.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134516267","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
A Transparent Ultra-Wide Stopband Frequency Selective Surface for Millimeter Wave Electromagnetic Shielding 一种用于毫米波电磁屏蔽的透明超宽阻带选频表面
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888718
Li Tang, Liping Yan, Xiang Zhao, Xi Li, Yushuang Jin, Richard Xian-Ke Gao
{"title":"A Transparent Ultra-Wide Stopband Frequency Selective Surface for Millimeter Wave Electromagnetic Shielding","authors":"Li Tang, Liping Yan, Xiang Zhao, Xi Li, Yushuang Jin, Richard Xian-Ke Gao","doi":"10.1109/APEMC53576.2022.9888718","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888718","url":null,"abstract":"An optically transparent ultra-wide stopband frequency selective surface (FSS) for electromagnetic shielding in millimeter wave is proposed in this paper. The proposed FSS is realized by etching distinctive patterns on non-conductive glass coated with transparent conductive indium tin oxide (ITO). Full-wave electromagnetic simulations demonstrate that the FSS can achieve electromagnetic shielding from 19 to 36.6 GHz with 20 dB shielding effectiveness and exhibit response stability to oblique incidence up to 40° under both TE and TM polarizations. Finally, a prototype is fabricated and the measured results are in good agreement with the simulation.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134376749","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 Novel EMC Simulation Analysis Method for Ship-Borne Phased Array Radar System 舰载相控阵雷达系统电磁兼容仿真分析新方法
2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC) Pub Date : 2022-09-01 DOI: 10.1109/APEMC53576.2022.9888449
Jinchao Ding, Binbin Wang, Zhihui Liu, Lei Sun
{"title":"A Novel EMC Simulation Analysis Method for Ship-Borne Phased Array Radar System","authors":"Jinchao Ding, Binbin Wang, Zhihui Liu, Lei Sun","doi":"10.1109/APEMC53576.2022.9888449","DOIUrl":"https://doi.org/10.1109/APEMC53576.2022.9888449","url":null,"abstract":"A novel electromagnetic compatibility (EMC) simulation analysis method based on variety electromagnetic simulation software is proposed in this letter. A hybrid simulation method of FEM (finite element method)-UTD (Uniform geometrical theory of diffraction) can be applied to analyze large-scale phased array radar system on electric large-size ship-borne platform. A chimney model is simulated to verify the superior of the FEM-UTD method with high precision, less memory and less computation time. The characteristic of FEM-MLFMM (Multilayer fast multi-pole method) and FEM-UTD algorithm in EMC simulation is also investigated.","PeriodicalId":186847,"journal":{"name":"2022 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133377272","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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