Pub Date : 1978-06-20DOI: 10.1109/ISEMC.1978.7566835
A. J. Mullen
I t is commonplace among e le c t r o m a g n e t ic s h i e l d i n g e n g in e e r s t h a t low f re q u e n c y m agnet ic s h i e l d i n g p r e se n ts un ique prob lem s. I t may be g e n e r a l l y s t a t e d t h a t , f o r c e r t a i n mid f r e q u e n c i e s , s h i e l d i n g is w e l l unders tood an d , a t v e ry h igh f r e q u e n c i e s , a n o th e r un ique s e t o f problems o c c u r . In t h i s s h o r t p a p e r , I w i l l address low f req uen cy and s t a t i c magnetic s h i e l d i n g .
{"title":"Field Penetration of Shielding Barriers, Low Frequency Effects","authors":"A. J. Mullen","doi":"10.1109/ISEMC.1978.7566835","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566835","url":null,"abstract":"I t is commonplace among e le c t r o m a g n e t ic s h i e l d i n g e n g in e e r s t h a t low f re q u e n c y m agnet ic s h i e l d i n g p r e se n ts un ique prob lem s. I t may be g e n e r a l l y s t a t e d t h a t , f o r c e r t a i n mid f r e q u e n c i e s , s h i e l d i n g is w e l l unders tood an d , a t v e ry h igh f r e q u e n c i e s , a n o th e r un ique s e t o f problems o c c u r . In t h i s s h o r t p a p e r , I w i l l address low f req uen cy and s t a t i c magnetic s h i e l d i n g .","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"378 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115308465","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566838
S. Erickson
The NASA Space Shuttle orbiter, as a test bed for low-orbit space laboratory experiments, needs an orbiter system electromagnetic environment that is well defined for the user. This report covers some aspects of defining the requirements for definition development. The orbiter avionic black boxes are designed in accordance with slightly modified MIL-STD-461 electromagnetic emission and susceptibility requirements, and these requirements provide a baseline to develop the system requirements. This report deals with the signal and power grounding system and the attendant prediction of common mode voltages and ac and dc magnetic fields. The RF fields are not discussed.
{"title":"Spacecraft Electromagnetic Environment Prediction","authors":"S. Erickson","doi":"10.1109/ISEMC.1978.7566838","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566838","url":null,"abstract":"The NASA Space Shuttle orbiter, as a test bed for low-orbit space laboratory experiments, needs an orbiter system electromagnetic environment that is well defined for the user. This report covers some aspects of defining the requirements for definition development. The orbiter avionic black boxes are designed in accordance with slightly modified MIL-STD-461 electromagnetic emission and susceptibility requirements, and these requirements provide a baseline to develop the system requirements. This report deals with the signal and power grounding system and the attendant prediction of common mode voltages and ac and dc magnetic fields. The RF fields are not discussed.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127886074","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566830
J. Whalen, J. Tront, C. Larson, J. Roe
The modified Ebers-Moll model for a bipolar junc tion transistor has been developed for predicting RFI 1-3 effects in bipolar integrated circuits. In this paper it will be shown that the modified Ebers-Moll model can be used with electronic circuit analysis programs such as SPICE (Simulation Program with Inte grated Circuit Emphasis) to provide useful information about RFI effects in digital bipolar integrated 4 circuits.
改进了双极结晶体管的Ebers-Moll模型，用于预测双极集成电路中的RFI - 1-3效应。本文将证明修正的Ebers-Moll模型可以与SPICE (Simulation Program with integrated circuit Emphasis)等电子电路分析程序一起使用，以提供有关数字双极集成电路中RFI效应的有用信息。
{"title":"Computer-Aided Analysis of RFI Effects in Integrated Circuits","authors":"J. Whalen, J. Tront, C. Larson, J. Roe","doi":"10.1109/ISEMC.1978.7566830","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566830","url":null,"abstract":"The modified Ebers-Moll model for a bipolar junc tion transistor has been developed for predicting RFI 1-3 effects in bipolar integrated circuits. In this paper it will be shown that the modified Ebers-Moll model can be used with electronic circuit analysis programs such as SPICE (Simulation Program with Inte grated Circuit Emphasis) to provide useful information about RFI effects in digital bipolar integrated 4 circuits.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124716809","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566863
J. Dabkowski
{"title":"AC Voltage Induction on Buried Pipelines","authors":"J. Dabkowski","doi":"10.1109/ISEMC.1978.7566863","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566863","url":null,"abstract":"","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124964436","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566821
D. Sailors, Rita P. Brown
The circuit compatibility of fixed and mobile users at HF has been calculated. Interference to the fixed service is at a minimum: (1) for a mobile system with low channel usage; (2) for a radiotelephony fixed system, when SSB modulation is used; and (3) under fading conditions when diversity reception is employed. High circuit com patibility also occurs when the interfering transmitter is in the skip zone of the desired receiver and during time periods when either the shared frequency is well above the MUF for the fixed system propa gation path or is well below the LUF for the fixed system path.
{"title":"Preliminary Technical Assessment of the Feasibility of Frequency Sharing by Fixed and Mobile Users in the 4-28 MHz Frequency Range","authors":"D. Sailors, Rita P. Brown","doi":"10.1109/ISEMC.1978.7566821","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566821","url":null,"abstract":"The circuit compatibility of fixed and mobile users at HF has been calculated. Interference to the fixed service is at a minimum: (1) for a mobile system with low channel usage; (2) for a radiotelephony fixed system, when SSB modulation is used; and (3) under fading conditions when diversity reception is employed. High circuit com patibility also occurs when the interfering transmitter is in the skip zone of the desired receiver and during time periods when either the shared frequency is well above the MUF for the fixed system propa gation path or is well below the LUF for the fixed system path.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114368388","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566828
D. E. Clark
Weapon system complexity and cost saving concepts are forcing changes in management and engineering methods for solving EM problems. Methodologies for use in weapon system acquisition are currently in the evolutionary stage of development within the EM commu nity. To cope with the changes, systematic and logical procedures are needed to define common goals, to commu nicate within large orgainzational structures, and to ensure good planning. Five factors for inclusion in an EM methodology are identified and discussed.
{"title":"Factors in an EM Methodology","authors":"D. E. Clark","doi":"10.1109/ISEMC.1978.7566828","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566828","url":null,"abstract":"Weapon system complexity and cost saving concepts are forcing changes in management and engineering methods for solving EM problems. Methodologies for use in weapon system acquisition are currently in the evolutionary stage of development within the EM commu nity. To cope with the changes, systematic and logical procedures are needed to define common goals, to commu nicate within large orgainzational structures, and to ensure good planning. Five factors for inclusion in an EM methodology are identified and discussed.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133044666","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566869
Charles W Cram, T. Hensler
{"title":"FAA Remote Terminal System Frequency Assignment Model","authors":"Charles W Cram, T. Hensler","doi":"10.1109/ISEMC.1978.7566869","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566869","url":null,"abstract":"","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130410361","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566820
C. L. Smith
As the num ber and kinds of services using or seeking space in the electrom agnetic spectrum seems to be increasing drasti cally some basic changes in our management of spectrum as signments are needed. In this paper an attem pt is made to sort ou t some of the techniques by which m ore than one service can share com m on frequency assignm ents. The 5th N O I for WARC-79 indicates a determ ination oil the part of the FCC to move in the direction of greater spectrum sharing. Common frequency assignments can be made if due regard fo r time, mode, polarization, type of service, pow er levels, queuing and a num ber of other factors are considered. The question of “ prior ity ’ ’ users versus ‘ ‘ secondary’ ’ services is discussed along with some subsidiary items such as interference levels. A major area of spectrum use im provem ent appears to be A dm inistrative. In this category are those adm inistrative changes which would suppress wasteful spectrum practices.
{"title":"Some Considerations for Band-Sharing in the Electromagnetic Spectrum","authors":"C. L. Smith","doi":"10.1109/ISEMC.1978.7566820","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566820","url":null,"abstract":"As the num ber and kinds of services using or seeking space in the electrom agnetic spectrum seems to be increasing drasti cally some basic changes in our management of spectrum as signments are needed. In this paper an attem pt is made to sort ou t some of the techniques by which m ore than one service can share com m on frequency assignm ents. The 5th N O I for WARC-79 indicates a determ ination oil the part of the FCC to move in the direction of greater spectrum sharing. Common frequency assignments can be made if due regard fo r time, mode, polarization, type of service, pow er levels, queuing and a num ber of other factors are considered. The question of “ prior ity ’ ’ users versus ‘ ‘ secondary’ ’ services is discussed along with some subsidiary items such as interference levels. A major area of spectrum use im provem ent appears to be A dm inistrative. In this category are those adm inistrative changes which would suppress wasteful spectrum practices.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130104478","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566841
L. Walko, K. Maxwell, J. Schneider, A. Serrano
Lightning effects research being conducted by the Electromagnetic Hazards Group of the Air Force Flight Dynamics Laboratory has resulted in a number of recent advances that enhance the ability to de termine the susceptibility of aircraft to the natural lightning hazard. These advances affect the ability to define the probable lightning attachment points, the probability of attachment, the characteristics of electrical transients on the aircraft structure and electrical circuits, and the spatial and physical mechanisms associated with the electrical transients. The advances have been in both the analysis and test ing areas of lightning effects research. However, it is the improved testing and data processing equip ment and procedures that have resulted in the ability to use more advanced analysis methods which, in turn, permit the development of more meaningful experiments that yield more useful and accurate results.
{"title":"Recent Advances in Indirect Lightning Effects Research","authors":"L. Walko, K. Maxwell, J. Schneider, A. Serrano","doi":"10.1109/ISEMC.1978.7566841","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566841","url":null,"abstract":"Lightning effects research being conducted by the Electromagnetic Hazards Group of the Air Force Flight Dynamics Laboratory has resulted in a number of recent advances that enhance the ability to de termine the susceptibility of aircraft to the natural lightning hazard. These advances affect the ability to define the probable lightning attachment points, the probability of attachment, the characteristics of electrical transients on the aircraft structure and electrical circuits, and the spatial and physical mechanisms associated with the electrical transients. The advances have been in both the analysis and test ing areas of lightning effects research. However, it is the improved testing and data processing equip ment and procedures that have resulted in the ability to use more advanced analysis methods which, in turn, permit the development of more meaningful experiments that yield more useful and accurate results.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129499353","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 : 1978-06-20DOI: 10.1109/ISEMC.1978.7566827
J. Roe
Near-field radiated interference scenarios as typified by boxto-box coupling within the confines of a system envelope cannot be treated by far-field concepts. Specification limits based upon to tal em itted power and minimum power required to produce interference are proposed, and the means to m eas ure these quantities are described. M any practical benefits are expected including elimination of am biguities, ability to in clude dem onstrable system losses in the specification, a “ de rating" procedure to reduce te s t time, and the ability to take advantage of computers and programm able te st equipment.
{"title":"An Improved Technological Basis for Radiated Susceptibility and Emissions Specifications","authors":"J. Roe","doi":"10.1109/ISEMC.1978.7566827","DOIUrl":"https://doi.org/10.1109/ISEMC.1978.7566827","url":null,"abstract":"Near-field radiated interference scenarios as typified by boxto-box coupling within the confines of a system envelope cannot be treated by far-field concepts. Specification limits based upon to tal em itted power and minimum power required to produce interference are proposed, and the means to m eas ure these quantities are described. M any practical benefits are expected including elimination of am biguities, ability to in clude dem onstrable system losses in the specification, a “ de rating\" procedure to reduce te s t time, and the ability to take advantage of computers and programm able te st equipment.","PeriodicalId":377995,"journal":{"name":"1978 IEEE International Symposium on Electromagnetic Compatibility","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128391688","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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