Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245757
Amina Gahfif, F. Costa, Pierre-Étienne Levy, M. Berkani, B. Revol, Marwan Ali
Boost converters based on GaN components are known to generate high levels of electromagnetic interferences (EMI) in common mode (CM) and / or in differential mode (DM). In this article, it is shown how a part of the CM current comes from the DM source and how to significantly reduce this effect. Solution is based on "balancing" the propagation paths between the positive line and the return line with taking care of a well-balanced inductances and parasitic capacitances distribution. By reducing significantly, CM current total electromagnetic interferences also reduce and thus facilitates compliance with electromagnetic compatibility (EMC) standards. This approach is a good prerequisite for an optimal designing of the filter afterward.
{"title":"Conducted Noise Investigation for IMS Based GaN HEMT Power Module by Black Box Model","authors":"Amina Gahfif, F. Costa, Pierre-Étienne Levy, M. Berkani, B. Revol, Marwan Ali","doi":"10.1109/EMCEUROPE48519.2020.9245757","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245757","url":null,"abstract":"Boost converters based on GaN components are known to generate high levels of electromagnetic interferences (EMI) in common mode (CM) and / or in differential mode (DM). In this article, it is shown how a part of the CM current comes from the DM source and how to significantly reduce this effect. Solution is based on \"balancing\" the propagation paths between the positive line and the return line with taking care of a well-balanced inductances and parasitic capacitances distribution. By reducing significantly, CM current total electromagnetic interferences also reduce and thus facilitates compliance with electromagnetic compatibility (EMC) standards. This approach is a good prerequisite for an optimal designing of the filter afterward.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132668760","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245723
J. Sadura, J. Sroka, Maciej Owsiński, A. Jóśko
Short circuit tests are always preceded with powering MV side of the test transformer by unloaded LV side. Thereafter the controller must wait for release of the operator to start the test. Sometimes electromagnetically disturbed controller starts the test without release. Such situation is undesired and can be destructive for the device under test. Identification of the transient fields during powering the test transformer is indispensable by assessing hazard of EM interference of the controller. The previous investigation of the Authors gave the hint that repetitive damped oscillatory waves are component of electromagnetic environment. Origin of them is repetitive ignition and extinction of the short arc by closing the circuit breaker in the MV circuit. Adequate instrumentation to cope with the problem are D-dot and B-dot field probes. The paper reports such measurements along with recording the voltage signals. Investigations expands the scope of electromagnetic phenomena present in high current laboratory.
{"title":"Identification of EM disturbances interfering the time-phase controller by short circuit tests","authors":"J. Sadura, J. Sroka, Maciej Owsiński, A. Jóśko","doi":"10.1109/EMCEUROPE48519.2020.9245723","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245723","url":null,"abstract":"Short circuit tests are always preceded with powering MV side of the test transformer by unloaded LV side. Thereafter the controller must wait for release of the operator to start the test. Sometimes electromagnetically disturbed controller starts the test without release. Such situation is undesired and can be destructive for the device under test. Identification of the transient fields during powering the test transformer is indispensable by assessing hazard of EM interference of the controller. The previous investigation of the Authors gave the hint that repetitive damped oscillatory waves are component of electromagnetic environment. Origin of them is repetitive ignition and extinction of the short arc by closing the circuit breaker in the MV circuit. Adequate instrumentation to cope with the problem are D-dot and B-dot field probes. The paper reports such measurements along with recording the voltage signals. Investigations expands the scope of electromagnetic phenomena present in high current laboratory.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123162081","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245678
Y. Shiraki, Takayoshi Miki, Shinsuke Kadoi, S. Nagasawa
Various cancellation techniques regarding the common-mode voltage of motor drives have been investigated. In this paper, we demonstrate an antiphase Pulse Width Modulation (PWM) operation by two inverters for motors driving operating in opposite phases. An antiphase PWM operation can reduce not only common-mode current but also radiated noise. The reduction effect of the common-mode current is verified experimentally on the basic experimental system up to 3 MHz. Additionally, the reduction effect of the radiated noise is verified experimentally on the actual product system up to 2 MHz. As the frequency becomes higher, the reduction effect of the antiphase PWM operation becomes lower. The reason is considered from the viewpoints both of the common-mode current path and the time waveform of the common-mode current. In the frequencies range from 10 kHz to 150 kHz, the reduction effect of the radiated noise by the antiphase PWM operation is higher than that with inserting the magnetic cores. The methods for suppression of the radiated noise by antiphase PWM operation can provide miniaturization of the inverter equipment. The noise reductions are investigated not regarding EMI applicable standards and limits, but the interference to radio‐frequency spectrum up to 3 MHz in the telecommunication equipment.
{"title":"Reduction of Radiated Noise Using Two Inverters for Motor Drive Operating in Opposite Phases","authors":"Y. Shiraki, Takayoshi Miki, Shinsuke Kadoi, S. Nagasawa","doi":"10.1109/EMCEUROPE48519.2020.9245678","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245678","url":null,"abstract":"Various cancellation techniques regarding the common-mode voltage of motor drives have been investigated. In this paper, we demonstrate an antiphase Pulse Width Modulation (PWM) operation by two inverters for motors driving operating in opposite phases. An antiphase PWM operation can reduce not only common-mode current but also radiated noise. The reduction effect of the common-mode current is verified experimentally on the basic experimental system up to 3 MHz. Additionally, the reduction effect of the radiated noise is verified experimentally on the actual product system up to 2 MHz. As the frequency becomes higher, the reduction effect of the antiphase PWM operation becomes lower. The reason is considered from the viewpoints both of the common-mode current path and the time waveform of the common-mode current. In the frequencies range from 10 kHz to 150 kHz, the reduction effect of the radiated noise by the antiphase PWM operation is higher than that with inserting the magnetic cores. The methods for suppression of the radiated noise by antiphase PWM operation can provide miniaturization of the inverter equipment. The noise reductions are investigated not regarding EMI applicable standards and limits, but the interference to radio‐frequency spectrum up to 3 MHz in the telecommunication equipment.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128880535","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245641
Nuca Iurie, Nuca Ilie, Nicolae Petre-Marian, M. Alexandr, Esanu Vitalie
This paper presents an analysis of the power quality impact and electromagnetic interference in a trolleybus traction system. As test subject it is used a 180 kW induction motor supplied by a three phased inverter with field oriented control. A fast Fourier transform was used in a simulation process, to determine the power quality and electromagnetic interference processes of the current supplied to the motor.
{"title":"Power Quality and Electromagnetic Interference in a Trolleybus Traction Sistem","authors":"Nuca Iurie, Nuca Ilie, Nicolae Petre-Marian, M. Alexandr, Esanu Vitalie","doi":"10.1109/EMCEUROPE48519.2020.9245641","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245641","url":null,"abstract":"This paper presents an analysis of the power quality impact and electromagnetic interference in a trolleybus traction system. As test subject it is used a 180 kW induction motor supplied by a three phased inverter with field oriented control. A fast Fourier transform was used in a simulation process, to determine the power quality and electromagnetic interference processes of the current supplied to the motor.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127846641","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245874
Sebastian Südekum, Hannes Schreiber, M. Leone
A modal equivalent circuit for interconnection structures within multilayer PCBs including the rigorous incorporation of dissipation, dispersion and skin effect is presented for the first time. Based on the discrete field formulation of the three-dimensional boundary value problem an exact network representation is obtained from the corresponding eigenvalue problem employing the lossless modes. In contrast to a recently published general approach, the mutual coupling of the modes can be neglected, such that the network complexity is minimized. The modal network includes the physical-based rational approximation of the intrinsic system dynamic, which is independent of the port positions. These in turns determine the excitation of the individual modes and can be simply accounted for by a transducer network. The model order is safely estimated in advanced and significantly reduced by the approximation of all sub-resonant (higher) modes by lumped elements. The accuracy and advantages of the proposed SPICE-compatible equivalent circuit are demonstrated and compared to the conventional overall vector fitting approach in frequency and time-domain examples including non-linear terminations.
{"title":"Modal Network Representation for Broadband SI/PI-Analysis of Interconnection Structures in Multilayer PCBs","authors":"Sebastian Südekum, Hannes Schreiber, M. Leone","doi":"10.1109/EMCEUROPE48519.2020.9245874","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245874","url":null,"abstract":"A modal equivalent circuit for interconnection structures within multilayer PCBs including the rigorous incorporation of dissipation, dispersion and skin effect is presented for the first time. Based on the discrete field formulation of the three-dimensional boundary value problem an exact network representation is obtained from the corresponding eigenvalue problem employing the lossless modes. In contrast to a recently published general approach, the mutual coupling of the modes can be neglected, such that the network complexity is minimized. The modal network includes the physical-based rational approximation of the intrinsic system dynamic, which is independent of the port positions. These in turns determine the excitation of the individual modes and can be simply accounted for by a transducer network. The model order is safely estimated in advanced and significantly reduced by the approximation of all sub-resonant (higher) modes by lumped elements. The accuracy and advantages of the proposed SPICE-compatible equivalent circuit are demonstrated and compared to the conventional overall vector fitting approach in frequency and time-domain examples including non-linear terminations.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131744391","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245737
Å. Wisten
Full scale experiments aiming at lightning protection of road lamps have been carried out. Two full scale systems of road lamps have been built built. One system was enclosed in a Faraday cage metal shielding, and the other system without any metal shielding. Each system consisted of four LED lamps on poles, 40 m from each other. The system using the Faraday cage was made of metal lamp houses, metal lamp poles, and shielded cables for power delivery. The alternative system was made of composite plastic lamp poles and unshielded cables. Lightning impulses were delivered by a surge generator, and the pulses injected at the lamp house, at the cable shield, and at the protective earth conductor. The evaluation was made by comparing the response voltages at the LED-lamps of the two alternative systems. The value of the resistance between protective earth and ground was studied. There was not a really decisive advantage with the Faraday-cage system compared to the completely unprotected composite plastic system. The reason is estimated to be cross coupling inside the lamp poles, and the too sparse shielding of the shielded cable.
{"title":"Impact of Lightning on Street Lights : - An experimental study investigating different poles and cables","authors":"Å. Wisten","doi":"10.1109/EMCEUROPE48519.2020.9245737","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245737","url":null,"abstract":"Full scale experiments aiming at lightning protection of road lamps have been carried out. Two full scale systems of road lamps have been built built. One system was enclosed in a Faraday cage metal shielding, and the other system without any metal shielding. Each system consisted of four LED lamps on poles, 40 m from each other. The system using the Faraday cage was made of metal lamp houses, metal lamp poles, and shielded cables for power delivery. The alternative system was made of composite plastic lamp poles and unshielded cables. Lightning impulses were delivered by a surge generator, and the pulses injected at the lamp house, at the cable shield, and at the protective earth conductor. The evaluation was made by comparing the response voltages at the LED-lamps of the two alternative systems. The value of the resistance between protective earth and ground was studied. There was not a really decisive advantage with the Faraday-cage system compared to the completely unprotected composite plastic system. The reason is estimated to be cross coupling inside the lamp poles, and the too sparse shielding of the shielded cable.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"190 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114746965","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245652
J. Benz, J. Hansen, S. Frei
Immunity failures of safety-critical automotive sensors can often be linked to strong resonances. In traditional approaches to combat the resonance, it is either shifted to other frequencies or attenuated. In this paper, a third way is shown. Every resonance is associated with an eigenmode of the system. If externally excited, the mode may resonate with a certain amplitude. This amplitude is a function of the projection of the system’s excitation onto the spatial distribution of the mode.With the help of a 3D sensitivity analysis, we identify potential geometric parameters that lead either to a reduced excitation of the eigenmode or that lower the impact of the eigenmodes on the target signal.Applying this method to an automotive pressure sensor a significant reduction of the resonance amplitude by a small modification in the sensor layout is achieved.
{"title":"Eigenmode Based Optimization of Sensors","authors":"J. Benz, J. Hansen, S. Frei","doi":"10.1109/EMCEUROPE48519.2020.9245652","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245652","url":null,"abstract":"Immunity failures of safety-critical automotive sensors can often be linked to strong resonances. In traditional approaches to combat the resonance, it is either shifted to other frequencies or attenuated. In this paper, a third way is shown. Every resonance is associated with an eigenmode of the system. If externally excited, the mode may resonate with a certain amplitude. This amplitude is a function of the projection of the system’s excitation onto the spatial distribution of the mode.With the help of a 3D sensitivity analysis, we identify potential geometric parameters that lead either to a reduced excitation of the eigenmode or that lower the impact of the eigenmodes on the target signal.Applying this method to an automotive pressure sensor a significant reduction of the resonance amplitude by a small modification in the sensor layout is achieved.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116926941","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245821
A. De Leo, G. Andrieu, V. M. Primiani
This paper reports the application of the "well-stirred" condition method to a multiple monopole source stirred reverberation chamber. Measurements and theoretical simulations confirm the applicability of this method to the examined scenario.
{"title":"\"Well-Stirred\" Condition Method applied to a Multiple Monopole Source Stirred Reverberation Chamber","authors":"A. De Leo, G. Andrieu, V. M. Primiani","doi":"10.1109/EMCEUROPE48519.2020.9245821","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245821","url":null,"abstract":"This paper reports the application of the \"well-stirred\" condition method to a multiple monopole source stirred reverberation chamber. Measurements and theoretical simulations confirm the applicability of this method to the examined scenario.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117252806","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245836
I. Bzikha, P. Monferran, V. Velayudhan, Alain Reineix
This paper proposes to analyze the performance in terms of soft fault detection of two chaotic signals using the chaos time domain reflectometry. These signals which are 1) a combination of the logistic map and Bernoulli map and 2) the Lorenz signal are depicted in order to remind their usage limitations. Although this paper demonstrates the relevance of the proposed chaotic signals for the soft fault detection, we propose also to compare the performances of each signal with a statistical approach. The study leads to conclude than the combination of the logistic map and Bernoulli map is more reliable than the Lorenz signal.
{"title":"Analysis of Chaos Time Domain Reflectometry for the Soft Fault Detection in a Cable","authors":"I. Bzikha, P. Monferran, V. Velayudhan, Alain Reineix","doi":"10.1109/EMCEUROPE48519.2020.9245836","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245836","url":null,"abstract":"This paper proposes to analyze the performance in terms of soft fault detection of two chaotic signals using the chaos time domain reflectometry. These signals which are 1) a combination of the logistic map and Bernoulli map and 2) the Lorenz signal are depicted in order to remind their usage limitations. Although this paper demonstrates the relevance of the proposed chaotic signals for the soft fault detection, we propose also to compare the performances of each signal with a statistical approach. The study leads to conclude than the combination of the logistic map and Bernoulli map is more reliable than the Lorenz signal.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"439 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116019332","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}
Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245880
Tomoya Takeuchi, K. Iokibe, Y. Toyota
Symmetry is important for differential-transmission lines, but the dense parallel traces easily break the symmetry due to coupling with the adjacent conductor, leading to mode conversion. We propose an asymmetric geometry of differential-transmission lines placed on the side of a nonadjacent conductor to suppress mode conversion and maintain signal integrity in the cases of loosely coupled and tightly coupled parallel traces. By designing the asymmetric geometry of dense differential-transmission lines by taking into account coupling with the adjacent conductor, mode conversion was successfully suppressed by decreasing the line width on the side of the non-adjacent conductor. It was also found that the asymmetric geometry can suppress mode conversion and maintain signal integrity in tightly coupled parallel traces. In loosely coupled parallel traces, on the other hand, the tightly coupled asymmetrically tapered bend we previously proposed suppresses mode conversion.
{"title":"Suppression of Mode Conversion Due to Asymmetric Geometry of Dense Parallel Traces in Differential-Transmission Lines","authors":"Tomoya Takeuchi, K. Iokibe, Y. Toyota","doi":"10.1109/EMCEUROPE48519.2020.9245880","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245880","url":null,"abstract":"Symmetry is important for differential-transmission lines, but the dense parallel traces easily break the symmetry due to coupling with the adjacent conductor, leading to mode conversion. We propose an asymmetric geometry of differential-transmission lines placed on the side of a nonadjacent conductor to suppress mode conversion and maintain signal integrity in the cases of loosely coupled and tightly coupled parallel traces. By designing the asymmetric geometry of dense differential-transmission lines by taking into account coupling with the adjacent conductor, mode conversion was successfully suppressed by decreasing the line width on the side of the non-adjacent conductor. It was also found that the asymmetric geometry can suppress mode conversion and maintain signal integrity in tightly coupled parallel traces. In loosely coupled parallel traces, on the other hand, the tightly coupled asymmetrically tapered bend we previously proposed suppresses mode conversion.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116380986","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：