Pub Date : 2003-10-14DOI: 10.1109/ISEMC.2003.1236608
J. C. Chai, E. Dressel, A. Britting, J.L. Montegut
The RF pickups by the long heliax cables at space launch sites in lightning environments were assessed by performing a field-to-cable coupling analysis which were verified via measurement data collected with the online lightning monitoring system (OLMS) installed at the lauch site. It was found that while some pickup amplitudes may be discernable, the action integrals, a measure of energies due to lightning, of these RF pickups seem always indistinguishable from the noise floors.
{"title":"Electromagnetic pickups by long heliax cables in lightning environments","authors":"J. C. Chai, E. Dressel, A. Britting, J.L. Montegut","doi":"10.1109/ISEMC.2003.1236608","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236608","url":null,"abstract":"The RF pickups by the long heliax cables at space launch sites in lightning environments were assessed by performing a field-to-cable coupling analysis which were verified via measurement data collected with the online lightning monitoring system (OLMS) installed at the lauch site. It was found that while some pickup amplitudes may be discernable, the action integrals, a measure of energies due to lightning, of these RF pickups seem always indistinguishable from the noise floors.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133185804","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236579
W. Bennett
The electric and magnetic fields of a current element are found without the usual assumptions made to find the fields of the Hertzian dipole. The result is a simpler and more accurate characterization of the current element: five field components, rather than seven, at any distance; and, three field components, at short distances, one approaching zero.
{"title":"The current element is not a Hertzian dipole","authors":"W. Bennett","doi":"10.1109/ISEMC.2003.1236579","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236579","url":null,"abstract":"The electric and magnetic fields of a current element are found without the usual assumptions made to find the fields of the Hertzian dipole. The result is a simpler and more accurate characterization of the current element: five field components, rather than seven, at any distance; and, three field components, at short distances, one approaching zero.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124122269","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236705
A.K.M. Mahbub Ar Rashid, N. Kuwabara, M. Maki, Y. Akiyama, H. Yamane
Influence to electromagnetic environment has been studied for power line communication (PLC). Longitudinal conversion loss (LCL) and input impedance are important parameters to evaluate the influence. Indoor AC mains line is modeled considering with typical conditions of Japanese house. The modeled line and electric equipment are presented with 4-port F-matrixes. The parameters of 4-port F-matrix are determined from calculation and measurement. Using this model, the input impedance and the LCL are calculated. The analysis model is examined by a simple network, and the results show that the calculation values almost agree with the measured values. The input impedance and the LCL are investigated for actual AC mains line, and the measured results almost agree with the calculated value.
{"title":"Evaluation of longitudinal conversion loss (LCL) for indoor AC mains line","authors":"A.K.M. Mahbub Ar Rashid, N. Kuwabara, M. Maki, Y. Akiyama, H. Yamane","doi":"10.1109/ISEMC.2003.1236705","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236705","url":null,"abstract":"Influence to electromagnetic environment has been studied for power line communication (PLC). Longitudinal conversion loss (LCL) and input impedance are important parameters to evaluate the influence. Indoor AC mains line is modeled considering with typical conditions of Japanese house. The modeled line and electric equipment are presented with 4-port F-matrixes. The parameters of 4-port F-matrix are determined from calculation and measurement. Using this model, the input impedance and the LCL are calculated. The analysis model is examined by a simple network, and the results show that the calculation values almost agree with the measured values. The input impedance and the LCL are investigated for actual AC mains line, and the measured results almost agree with the calculated value.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121413855","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236725
S. Caniggia, F. Maradei
The paper deals with the development of equivalent circuit models of shielded cables suitable to analyze immunity by commercial circuit simulators. Equivalent circuits of coaxial cables based on different assumptions are proposed and validated by comparing the solutions with those derived by other approaches. Different circuit models are derived for the case of lossless and lossy cables.
{"title":"Equivalent circuit models for the analysis of coaxial cables immunity","authors":"S. Caniggia, F. Maradei","doi":"10.1109/ISEMC.2003.1236725","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236725","url":null,"abstract":"The paper deals with the development of equivalent circuit models of shielded cables suitable to analyze immunity by commercial circuit simulators. Equivalent circuits of coaxial cables based on different assumptions are proposed and validated by comparing the solutions with those derived by other approaches. Different circuit models are derived for the case of lossless and lossy cables.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"7 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125148286","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236605
C. Zombolas
Regulations limiting human exposure to radio frequency (RF) electromagnetic radiation (EMR) now exist in many countries. To legally market mobile and portable transmitting equipment (MPTE) in Australia, suppliers must comply with the provisions of the Australian Communications Authority (ACA) regulations on EMR and specific absorption rate (SAR). The regulatory arrangements include RF EMR human exposure limits, evaluation criteria, three SAR measurement methods and labeling requirements. This paper will detail the steps necessary for the approval of MPTE to the ACA EMR requirements. The EMR regulations and the SAR measurement methodologies will also be discussed.
{"title":"SAR testing and approval requirement for Australia","authors":"C. Zombolas","doi":"10.1109/ISEMC.2003.1236605","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236605","url":null,"abstract":"Regulations limiting human exposure to radio frequency (RF) electromagnetic radiation (EMR) now exist in many countries. To legally market mobile and portable transmitting equipment (MPTE) in Australia, suppliers must comply with the provisions of the Australian Communications Authority (ACA) regulations on EMR and specific absorption rate (SAR). The regulatory arrangements include RF EMR human exposure limits, evaluation criteria, three SAR measurement methods and labeling requirements. This paper will detail the steps necessary for the approval of MPTE to the ACA EMR requirements. The EMR regulations and the SAR measurement methodologies will also be discussed.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125190695","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236648
J. G. Kraemer
100BaseTX Ethernet is a popular method of high-speed data transfer using copper wire in the residential, commercial and industrial environments. Through proper circuit design and printed wiring board layout, IEEE 802.3 100BaseTX Ethernet systems can be made to comply with the applicable FCC Part 15 class B radiated emissions requirements and the European Union's radiated and conducted immunity EMI compliance requirements using unshielded twisted pair wiring. Because of the tremendous off-the-shelf availability of hardware and software, there are many advantages to using 100BaseTX Ethernet on defense/aerospace platforms to quickly and cost effectively increase system capability. This paper provides methods of determining expected emissions and immunity with respect to defense/aerospace equipment EMI requirements when 100BaseTX Ethernet is used with various cable/connector systems. Data and analysis are presented for cable/connector system that will allow various defense/aerospace EMI requirements to be met.
100BaseTX以太网是在住宅、商业和工业环境中使用铜线进行高速数据传输的一种流行方法。通过适当的电路设计和印刷布线板布局，可以使IEEE 802.3 100BaseTX以太网系统符合适用的FCC Part 15 B类辐射发射要求和使用非屏蔽双绞线的欧盟辐射和传导抗扰EMI合规要求。由于硬件和软件的大量现成可用性，在国防/航空航天平台上使用100BaseTX以太网有许多优点，可以快速且经济有效地增加系统能力。当100BaseTX以太网与各种电缆/连接器系统一起使用时，本文提供了确定国防/航空航天设备EMI要求的预期发射和抗扰度的方法。提出了电缆/连接器系统的数据和分析，该系统将允许满足各种国防/航空航天EMI要求。
{"title":"Selection of cables and connectors for 100BaseTX Ethernet for defense/aerospace environment EMI compliance","authors":"J. G. Kraemer","doi":"10.1109/ISEMC.2003.1236648","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236648","url":null,"abstract":"100BaseTX Ethernet is a popular method of high-speed data transfer using copper wire in the residential, commercial and industrial environments. Through proper circuit design and printed wiring board layout, IEEE 802.3 100BaseTX Ethernet systems can be made to comply with the applicable FCC Part 15 class B radiated emissions requirements and the European Union's radiated and conducted immunity EMI compliance requirements using unshielded twisted pair wiring. Because of the tremendous off-the-shelf availability of hardware and software, there are many advantages to using 100BaseTX Ethernet on defense/aerospace platforms to quickly and cost effectively increase system capability. This paper provides methods of determining expected emissions and immunity with respect to defense/aerospace equipment EMI requirements when 100BaseTX Ethernet is used with various cable/connector systems. Data and analysis are presented for cable/connector system that will allow various defense/aerospace EMI requirements to be met.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114344337","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236597
J. Pak, Jingook Kim, Jung-gun Byun, Heejae Lee, Joungho Kim
This paper describes the edge radiation of signal power at multi-layer PCB mostly depends on coupling of through-hole signal via to power/ground plane, and the coupling mechanism is the loading effects of power/ground plane impedance on signal return current. It is well known that the variation of power/ground impedance comes from power/ground resonance, and the variation range is up to several tens ohm (/spl Omega/). In 50/spl Omega/ system, this range impedance makes signal input matching worse. Moreover, the transmitted signal is divided into two parts, load and power/ground plane. Finally, the assimilated signal power by power/ground plane is emitted from PCB open edge, which is a good radiation structure. Above analysis is shown in this paper by Spice modeling of through-hole signal via and power/ground plane and measuring the near field strength at PCB edge with/without through-hole signal via cases. The loading effects are seen in S-parameters and input impedance of signal traces and PCB edge radiation in |S21| between signal trace and near field probe. The trace with through-hole signal via case has the larger radiated emission at PCB edge than without case by more than 20dB.
{"title":"Coupling of through-hole signal via to power/ground resonance and excitation of edge radiation in multi-layer PCB","authors":"J. Pak, Jingook Kim, Jung-gun Byun, Heejae Lee, Joungho Kim","doi":"10.1109/ISEMC.2003.1236597","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236597","url":null,"abstract":"This paper describes the edge radiation of signal power at multi-layer PCB mostly depends on coupling of through-hole signal via to power/ground plane, and the coupling mechanism is the loading effects of power/ground plane impedance on signal return current. It is well known that the variation of power/ground impedance comes from power/ground resonance, and the variation range is up to several tens ohm (/spl Omega/). In 50/spl Omega/ system, this range impedance makes signal input matching worse. Moreover, the transmitted signal is divided into two parts, load and power/ground plane. Finally, the assimilated signal power by power/ground plane is emitted from PCB open edge, which is a good radiation structure. Above analysis is shown in this paper by Spice modeling of through-hole signal via and power/ground plane and measuring the near field strength at PCB edge with/without through-hole signal via cases. The loading effects are seen in S-parameters and input impedance of signal traces and PCB edge radiation in |S21| between signal trace and near field probe. The trace with through-hole signal via case has the larger radiated emission at PCB edge than without case by more than 20dB.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129642653","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236671
Patrick K. Harris, Nce, Nathan F. Block
The MIL-STD-462 CS02 conducted susceptibility test setup includes an audio transformer, with the secondary used as an inductor, and a large capacitor. Together, these two components from an L-type low-pass filter to minimize the injected test signal input into the power source. Some flight hardware power input configurations are not compatible with this setup and break into oscillation when powered up. This, in turn, can damage flight hardware. Such as oscillation resulted in the catastrophic failure of an item tested in the Goddard Space Flight Center (GSFC) large electromagnetic compatibility (EMC) test facility.
{"title":"Potential damage to flight hardware from MIL-STD-462 CS02 setup","authors":"Patrick K. Harris, Nce, Nathan F. Block","doi":"10.1109/ISEMC.2003.1236671","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236671","url":null,"abstract":"The MIL-STD-462 CS02 conducted susceptibility test setup includes an audio transformer, with the secondary used as an inductor, and a large capacitor. Together, these two components from an L-type low-pass filter to minimize the injected test signal input into the power source. Some flight hardware power input configurations are not compatible with this setup and break into oscillation when powered up. This, in turn, can damage flight hardware. Such as oscillation resulted in the catastrophic failure of an item tested in the Goddard Space Flight Center (GSFC) large electromagnetic compatibility (EMC) test facility.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125557078","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236601
Q. Zeng, A. Chubukjian
In this paper, we describe the results of a study carried out to evaluate the cumulative effects of devices using ultrawideband (UWB) technology upon the electromagnetic environment, specifically their contributions to the raising of the ambient levels. These effects have been quantified, and an electromagnetic compatibility (EMC) methodology developed to assess the interference potential of UWB devices with respect to conventional radiocommunications systems.
{"title":"Characterization of the cumulative effects of ultrawideband technology on the electromagnetic environment","authors":"Q. Zeng, A. Chubukjian","doi":"10.1109/ISEMC.2003.1236601","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236601","url":null,"abstract":"In this paper, we describe the results of a study carried out to evaluate the cumulative effects of devices using ultrawideband (UWB) technology upon the electromagnetic environment, specifically their contributions to the raising of the ambient levels. These effects have been quantified, and an electromagnetic compatibility (EMC) methodology developed to assess the interference potential of UWB devices with respect to conventional radiocommunications systems.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126850636","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 : 2003-10-14DOI: 10.1109/ISEMC.2003.1236629
D. Moongilan
Telecommunication network equipment extensively uses optical transceivers to convert electrical signals into lightwave and vice-versa. The aperture (ferrule) of the transceiver where fiber will be attached cannot be completely RF shielded to prevent radiation in the frequency range of 8 to 40 GHz. Most telecommunication equipment is designed to operate in a frame without doors or covers and therefore, radiation must be stopped at circuit pack level in order to meet the regulatory and customer imposed radiated emission requirements. The radiation levels from optical transceivers increase with data-rate, transmit optical power-level, and fiber impedance. Transceivers of different manufacturers may be used in optical network platforms to increase the data throughput and rate. The radiated emissions emanating from transceivers are found to be different depending on their type and manufacturer. This paper discusses downward angular installation methods to reduce radiated emission levels from transceivers so that equipment has extra margin to compensate for increased radiated emission levels from certain transceivers. A theoretical calculation of transceiver placement angle to lower radiated emissions is presented. Also presented and results discussed is experimental data for different downward angular placement for a simulated transceiver and for transceivers installed in network equipment.
{"title":"Methods to reduce radiated emissions from optical transceivers","authors":"D. Moongilan","doi":"10.1109/ISEMC.2003.1236629","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236629","url":null,"abstract":"Telecommunication network equipment extensively uses optical transceivers to convert electrical signals into lightwave and vice-versa. The aperture (ferrule) of the transceiver where fiber will be attached cannot be completely RF shielded to prevent radiation in the frequency range of 8 to 40 GHz. Most telecommunication equipment is designed to operate in a frame without doors or covers and therefore, radiation must be stopped at circuit pack level in order to meet the regulatory and customer imposed radiated emission requirements. The radiation levels from optical transceivers increase with data-rate, transmit optical power-level, and fiber impedance. Transceivers of different manufacturers may be used in optical network platforms to increase the data throughput and rate. The radiated emissions emanating from transceivers are found to be different depending on their type and manufacturer. This paper discusses downward angular installation methods to reduce radiated emission levels from transceivers so that equipment has extra margin to compensate for increased radiated emission levels from certain transceivers. A theoretical calculation of transceiver placement angle to lower radiated emissions is presented. Also presented and results discussed is experimental data for different downward angular placement for a simulated transceiver and for transceivers installed in network equipment.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128967271","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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