Pub Date : 2016-05-23DOI: 10.1109/AEROEMC.2016.7504545
C. Marot, A. Jaber
Today the electronic embedded architecture in aircraft is based on traditional approaches on the independent aircraft systems with modules called LRU, Line Replaceable Unit. Needs to reduce cost and weight of the embedded electronic units pass by the implementation of a more modular electronics in the architectures AC with elementary module. Such EMC avionic tests description at electronics modules levels are not defined today. The objectives of those studies are to give technical data to defined EMC test setup and associated limits at modules levels to respect environment requirements.
{"title":"Near field measurement for EMC validation of electronics board in IMA","authors":"C. Marot, A. Jaber","doi":"10.1109/AEROEMC.2016.7504545","DOIUrl":"https://doi.org/10.1109/AEROEMC.2016.7504545","url":null,"abstract":"Today the electronic embedded architecture in aircraft is based on traditional approaches on the independent aircraft systems with modules called LRU, Line Replaceable Unit. Needs to reduce cost and weight of the embedded electronic units pass by the implementation of a more modular electronics in the architectures AC with elementary module. Such EMC avionic tests description at electronics modules levels are not defined today. The objectives of those studies are to give technical data to defined EMC test setup and associated limits at modules levels to respect environment requirements.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122582883","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 : 2015-08-06DOI: 10.1109/APEMC.2015.7175355
Wei Liao, Jingjing Shi, Jianqing Wang
In this study, we propose a two-step approach to evaluate electromagnetic interference (EMI) with a wearable electrocardiogram (ECG) sensor. The two-step approach combines a quasi-static electromagnetic (EM) field analysis and an electric circuit analysis, and is applied to the EMI analysis at frequencies below 1 MHz for our developed wearable ECG to demonstrate its usefulness. The quasi-static EM field analysis gives the common mode voltage coupled from the incident EM field at the ECG sensing electrodes, and the electric circuit analysis quantifies a differential mode voltage at the differential amplifier output of the ECG detection circuit. The differential mode voltage has been shown to come from a conversion from the common mode voltage due to an unbalance between the contact impedances of the two sensing electrodes. It may achieve nearly 0.6 V at the differential amplifier output under 10-V/m plane-wave incident electric field, and completely mask the ECG signal. It is essential to reduce the unbalance as much as possible to not cause a significant interference voltage in the amplified ECG signal.
{"title":"A two-step approach for EMI evaluation of a wearable ECG","authors":"Wei Liao, Jingjing Shi, Jianqing Wang","doi":"10.1109/APEMC.2015.7175355","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175355","url":null,"abstract":"In this study, we propose a two-step approach to evaluate electromagnetic interference (EMI) with a wearable electrocardiogram (ECG) sensor. The two-step approach combines a quasi-static electromagnetic (EM) field analysis and an electric circuit analysis, and is applied to the EMI analysis at frequencies below 1 MHz for our developed wearable ECG to demonstrate its usefulness. The quasi-static EM field analysis gives the common mode voltage coupled from the incident EM field at the ECG sensing electrodes, and the electric circuit analysis quantifies a differential mode voltage at the differential amplifier output of the ECG detection circuit. The differential mode voltage has been shown to come from a conversion from the common mode voltage due to an unbalance between the contact impedances of the two sensing electrodes. It may achieve nearly 0.6 V at the differential amplifier output under 10-V/m plane-wave incident electric field, and completely mask the ECG signal. It is essential to reduce the unbalance as much as possible to not cause a significant interference voltage in the amplified ECG signal.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128399895","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 : 2015-08-06DOI: 10.1109/APEMC.2015.7175322
S. Tuan, H. Chou
The scattering mechanisms of reflecting arrays illuminated by the radiation of line source are summarized for a general near-field focus problem. In particular, the phenomena are interpreted by the ray decompositions of Floquet waves and result in the solutions, analogous to the ordinary UTD-type formulations for the phased array antennas with a proper parameter mapping. The ray phenomena however exhibit different characteristics with this reflecting array problem, which will be theoretically investigated with numerical examples presented to demonstrate the scattering ray mechanisms.
{"title":"Asymptotic analysis of scattering from reflectarray antennas for the near-field focused applications","authors":"S. Tuan, H. Chou","doi":"10.1109/APEMC.2015.7175322","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175322","url":null,"abstract":"The scattering mechanisms of reflecting arrays illuminated by the radiation of line source are summarized for a general near-field focus problem. In particular, the phenomena are interpreted by the ray decompositions of Floquet waves and result in the solutions, analogous to the ordinary UTD-type formulations for the phased array antennas with a proper parameter mapping. The ray phenomena however exhibit different characteristics with this reflecting array problem, which will be theoretically investigated with numerical examples presented to demonstrate the scattering ray mechanisms.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129140327","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 : 2015-08-06DOI: 10.1109/APEMC.2015.7175414
P. Pathak, H. Chou
An analytical development is presented for efficiently describing the electromagnetic (EM) fields radiated by very long but narrow finite rectangular planar arrays, which radiate in the presence of a planar perfectly conducting surface of infinite or large finite extent. A uniform geometrical theory of diffraction (UTD) solution is obtained which expresses, in a collective fashion, the fields emanating from each row of the antenna array elements, which propagate along three basic rays, namely one from each of the two ends of each row, and one from within the interior point on each row. Such a row by row field summation based description greatly simplifies the solution in contrast to conventional array element by element field summation method. Furthermore, this collective UTD ray field description provides a simple physical picture for array radiation mechanisms, which is generally absent in other methods of solution. The application of this work is to the rapid analysis of electronically scanned, very long, but narrow arrays which can produce an extremely sharp beam in the plane confining the array axis (along the long array dimension) and the normal to the array face.
{"title":"A collective uniform geometrical theory of diffraction ray field analysis of very long and narrow finite planar arrays","authors":"P. Pathak, H. Chou","doi":"10.1109/APEMC.2015.7175414","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175414","url":null,"abstract":"An analytical development is presented for efficiently describing the electromagnetic (EM) fields radiated by very long but narrow finite rectangular planar arrays, which radiate in the presence of a planar perfectly conducting surface of infinite or large finite extent. A uniform geometrical theory of diffraction (UTD) solution is obtained which expresses, in a collective fashion, the fields emanating from each row of the antenna array elements, which propagate along three basic rays, namely one from each of the two ends of each row, and one from within the interior point on each row. Such a row by row field summation based description greatly simplifies the solution in contrast to conventional array element by element field summation method. Furthermore, this collective UTD ray field description provides a simple physical picture for array radiation mechanisms, which is generally absent in other methods of solution. The application of this work is to the rapid analysis of electronically scanned, very long, but narrow arrays which can produce an extremely sharp beam in the plane confining the array axis (along the long array dimension) and the normal to the array face.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132043520","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 : 2015-05-29DOI: 10.1109/APEMC.2015.7175365
R. Vogt-Ardatjew, A. E. Sowa, F. Leferink
It is well known that the presence of conductive cable can cause significant changes in field distribution as well as affecting antenna characteristics. This paper focuses on the experimental estimation of the usability of special absorbing coating on antenna cable in order to minimize its influence on the measured fields. The experimental analysis has been conducted in both anechoic and reverberant environments.
{"title":"The effect of magneto-dielectric absorbing coating on unsymmetrical antenna cables","authors":"R. Vogt-Ardatjew, A. E. Sowa, F. Leferink","doi":"10.1109/APEMC.2015.7175365","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175365","url":null,"abstract":"It is well known that the presence of conductive cable can cause significant changes in field distribution as well as affecting antenna characteristics. This paper focuses on the experimental estimation of the usability of special absorbing coating on antenna cable in order to minimize its influence on the measured fields. The experimental analysis has been conducted in both anechoic and reverberant environments.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123307490","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175368
J. Shieh, A. Lin, Y. Tang
This paper studies that hydrogen fuel cell technology as a CHP, combined heat and power source, could be a viable alternative energy source because of its low noise and high efficiency rates for residential district use. This studied case examples and showed the benefits of exploring stationary fuel cell systems. Not only a payback model was created for each country's fuel cell system, but also a short analysis on each country's payback discussed what problems arose and whether the fuel cell could be marketable. Finally, a matrix chart was produced to compare the 4 fuel cells against each other to understand how each fuel cell stood as compared to others.
{"title":"Analysis of Taiwan residential districts power sources by using hydrogen fuel cells","authors":"J. Shieh, A. Lin, Y. Tang","doi":"10.1109/APEMC.2015.7175368","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175368","url":null,"abstract":"This paper studies that hydrogen fuel cell technology as a CHP, combined heat and power source, could be a viable alternative energy source because of its low noise and high efficiency rates for residential district use. This studied case examples and showed the benefits of exploring stationary fuel cell systems. Not only a payback model was created for each country's fuel cell system, but also a short analysis on each country's payback discussed what problems arose and whether the fuel cell could be marketable. Finally, a matrix chart was produced to compare the 4 fuel cells against each other to understand how each fuel cell stood as compared to others.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115397933","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175257
Zou Aihua, Xu Changwu
This paper presents the simulation results with commercial Computer Aided Engineering (CAE) software to improve the low frequency gain (from 80 MHz to 200 MHz) of a small dual stacked log periodic dipole array antenna. The practical results of the improved small dual stacked log-periodic dipole array antenna are presented as well. The both results prove that this improved LPDA is able to apply to the immunity testing for automotive components and sub-system and has a good performance in E-field characteristic from 80 MHz.
{"title":"A small dual stacked log periodic dipole array antenna (LPDA) with improved gain of low frequency for immunity testing","authors":"Zou Aihua, Xu Changwu","doi":"10.1109/APEMC.2015.7175257","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175257","url":null,"abstract":"This paper presents the simulation results with commercial Computer Aided Engineering (CAE) software to improve the low frequency gain (from 80 MHz to 200 MHz) of a small dual stacked log periodic dipole array antenna. The practical results of the improved small dual stacked log-periodic dipole array antenna are presented as well. The both results prove that this improved LPDA is able to apply to the immunity testing for automotive components and sub-system and has a good performance in E-field characteristic from 80 MHz.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"461 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116777641","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175227
Che-Yu Lin, Bao-Ren Huang, Zih-Siang Yan, Chun-Long Wang
In this paper, a bended differential transmission line using the L-shaped pad is proposed to suppress the differential-mode noise. The bended differential transmission line using the L-shaped pad can reduce the differential-to-common mode conversion from -6.58 dB to -10.10 dB and the TDR differential-mode noise from 0.087 V to 0.023 V as compared with the bended differential transmission line using the parallel-plate capacitor. In order to verify the simulation results, measurement is done in the frequency and time domains where the measurement results are in good agreement with the simulation results.
{"title":"Differential-mode noise suppression using L-shaped pad","authors":"Che-Yu Lin, Bao-Ren Huang, Zih-Siang Yan, Chun-Long Wang","doi":"10.1109/APEMC.2015.7175227","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175227","url":null,"abstract":"In this paper, a bended differential transmission line using the L-shaped pad is proposed to suppress the differential-mode noise. The bended differential transmission line using the L-shaped pad can reduce the differential-to-common mode conversion from -6.58 dB to -10.10 dB and the TDR differential-mode noise from 0.087 V to 0.023 V as compared with the bended differential transmission line using the parallel-plate capacitor. In order to verify the simulation results, measurement is done in the frequency and time domains where the measurement results are in good agreement with the simulation results.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116945443","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175342
Yi Huang, Guan-Pu Pan, Tsung-Lin Li, Jwo-Shiun Sun
A single-fed 5.8 GHz dual-polarized rectenna (rectifying antenna) is presented. The impedance bandwidth of antenna meets the specification of Industrial Scientific Medical (ISM) and the measured peak gain varies from 4.5-5.7 dBi. The single-fed dual-polarized rectenna achieves RF-to-DC conversion efficiency of 79% at 5.8 GHz and DC voltage of 7.38 V, it is attainable for wireless power transmission.
{"title":"Design of dual polarized rectenna for wireless power transmission","authors":"Yi Huang, Guan-Pu Pan, Tsung-Lin Li, Jwo-Shiun Sun","doi":"10.1109/APEMC.2015.7175342","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175342","url":null,"abstract":"A single-fed 5.8 GHz dual-polarized rectenna (rectifying antenna) is presented. The impedance bandwidth of antenna meets the specification of Industrial Scientific Medical (ISM) and the measured peak gain varies from 4.5-5.7 dBi. The single-fed dual-polarized rectenna achieves RF-to-DC conversion efficiency of 79% at 5.8 GHz and DC voltage of 7.38 V, it is attainable for wireless power transmission.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121083240","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 : 2015-05-26DOI: 10.1109/APEMC.2015.7175356
A. Tateno, T. Nagaoka, K. Saito, Soichi Watanabe, Masaharu Takahashi, K. Ito
With the increase of wireless radio terminals such as mobile phones, there are also increasing concerns about the risk of the human health owing to electromagnetic exposures from such communication devices. Previously, we have evaluated the specific absorption rate (SAR) for pregnant females and their fetuses when the wireless radio terminals were only placed in front of the abdomen of the pregnant females. Therefore, in this study, we estimated the SAR for pregnant females and their fetuses at 13th, 18th, and 26th gestational weeks when the wireless radio terminals were placed various positions around the abdomen in consideration of the mobile phone in the pocket or bag. As the results, we found fetal SARs from the terminal in front of the abdomen are approximately a thousand times higher than those around the back at a maximum. In addition, all calculated SARs are below the safety guideline set by the International Commission for Non-ionizing Radiation Protection.
{"title":"Variability of SAR for human fetuses from wireless radio terminals placed various positions around the abdomen in pregnancy","authors":"A. Tateno, T. Nagaoka, K. Saito, Soichi Watanabe, Masaharu Takahashi, K. Ito","doi":"10.1109/APEMC.2015.7175356","DOIUrl":"https://doi.org/10.1109/APEMC.2015.7175356","url":null,"abstract":"With the increase of wireless radio terminals such as mobile phones, there are also increasing concerns about the risk of the human health owing to electromagnetic exposures from such communication devices. Previously, we have evaluated the specific absorption rate (SAR) for pregnant females and their fetuses when the wireless radio terminals were only placed in front of the abdomen of the pregnant females. Therefore, in this study, we estimated the SAR for pregnant females and their fetuses at 13th, 18th, and 26th gestational weeks when the wireless radio terminals were placed various positions around the abdomen in consideration of the mobile phone in the pocket or bag. As the results, we found fetal SARs from the terminal in front of the abdomen are approximately a thousand times higher than those around the back at a maximum. In addition, all calculated SARs are below the safety guideline set by the International Commission for Non-ionizing Radiation Protection.","PeriodicalId":325138,"journal":{"name":"2015 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127129184","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}
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