{"title":"Transfer Impedance and Transfer Admittance Measurements on Gasketted Panel Assemblies, and Honeycomb Air-Vent Assemblies","authors":"P. Madle","doi":"10.1109/ISEMC.1976.7568724","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568724","url":null,"abstract":"Electromagnetic energy can penetrate incompletely shielded enclosures through the action of three different coupling mechanisms. Two of these mechanisms, diffusion through the thickness of the shield and magnetic field coupling through imperfec tions in the shield, can be combined and represented as a Transfer Impedance which relates the magnetic field at the outer surface of the enclosure to the resulting electric field induced along the inner surface.","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129169721","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}
{"title":"Simultaneous Microwave and HF Thawing of Cryogenically Preserved Canine Kidneys","authors":"H. Ecker, E. C. Burdette, F. Cain","doi":"10.1109/ISEMC.1976.7568728","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568728","url":null,"abstract":"New engineering techniques currently are being applied to solve medical/biological problems associated with developing methodologies for the long-term cryopreservation and subsequent thawing of deeply-frozen human kidneys. This paper deals with the recent ad vances achieved in the use of electromagnetic (EM) energy to thaw cryogenically-preserved canine kidneys— which are similar in size to human kidneys. One of the keys to successful cryopreservation of cells, tissues, and organs is the ability to efficiently thaw the bio logical material without damage. Accurate control of the rate and uniformity of the thawing process in addition to knowledge of the effects of any cryoprotective agents employed during freezing are require ments for success. Investigations at Georgia Tech have shown that the illumination patterns and power level of the electromagnetic radiation must be carefully con trolled to obtain rapid, uniform thawing. An accurate knowledge of the electrical properties of the material as functions of both temperature and cryoprotectant level is required to exercise appropriate control on the radiation.","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121240760","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}
{"title":"Antennas for Nonsinusoidal Electromagnetic Waves","authors":"H. Harmuth","doi":"10.1109/ISEMC.1976.7568735","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568735","url":null,"abstract":"The e f f i c i e n t r a d i a t i o n o f s i n u s o i d a l waves i s a ccom p lish ed by means o f antennas t h a t r e s o n a t e w ith th e wave t o be r a d i a t e d . S im i la r r e so n a n t an ten n as f o r Walsh waves h a v e been d e s c r ib e d , but t h e y r e q u ir e t im e v a r i a b l e e le m e n ts i n t h e form o f s w i t c h e s t h a t made them im p r a c t i c a l . The c u r r e n t ly u se d a n ten n a s f o r th e r a d i a t i o n o f Walsh wa v e s r e q u ir e t h e d i s s i p a t i o n o f most o f th e power i n r e s i s t o r s i n ord er t o a v o id r in g in g and th e r e s u l t i n g d i s t o r t i o n s o f th e r a d ia t e d w aves . A new ty p e o f antenna t h a t a v o id s t h i s d i s s i p a t i o n o f power makes u se o f h y b r id cou p l e r s and d e la y feed b a ck l i n e s t o o b t a in r a d i a t o r s t h a t are i n re so n a n ce w ith any wave o f a c e r t a i n p e r io d , r e g a r d l e s s o f th e t im e v a r i a t i o n d u r in g t h i s p e r io d . No t im e v a r i a b l e e le m e n ts are n eed ed . The e f f i c i e n c y o f t h e s e a n ten n as shou ld equal t h a t o f r e so n a n t d i p o l e s f o r s i n u s o i d a l w aves .","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122752242","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}
{"title":"Spectrum Compatibility Prospectus","authors":"A. L. Rossmiller","doi":"10.1109/ISEMC.1976.7568683","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568683","url":null,"abstract":"","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124831398","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}
{"title":"Generation of Tailored EMC Specifications","authors":"T. Baldwin, G. Capraro","doi":"10.1109/ISEMC.1976.7568732","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568732","url":null,"abstract":"This paper describes a computerized a n a lys is proc e ss (IEMCAP) which may be used to e s t a b l i s h and main ta in c o s t e f f e c t i v e in ter feren ce control throughout the l i f e cyc le o f systems composed o f communications and e le c t r o n ic s equipment. The program i s capable o f both generating system s p e c i f i c a t io n l im i t s and main ta in in g the in t e g r i t y o f the system s p e c i f i c a t io n with system m odif ica tion . The program u t i l i z e s MIL-STD-461A and MIL-I-6181D EMC s p e c i f i c a t io n s as a basis fo r de f in in g the overall system s p e c i f i c a t io n l i m i t s . The major segments o f the program are s p e c i f i c a t io n gener a t io n , t r a d e o f f a n a ly s is and waiver a n a ly s is .","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130280594","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}
{"title":"Motor Vehicle Ignition Radiation (With Respect to SAE Standard J551C)","authors":"Frank M. Lucia","doi":"10.1109/ISEMC.1976.7568764","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568764","url":null,"abstract":"Ten thousand vehicles were measured at each test frequency, 50 MHz and 153 MHz, using land mobile receivers with a NADME unit (Noise Amplitude Distri bution Measurement Equipment) which was used to indicate peak noise levels. A standard dipole was positioned three meters above the ground and ten meters from a single lane exit ramp. Except for the ignition noise created by the vehicles on the exit ramp, the measurement site was quiet.","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129090531","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}
{"title":"RF Susceptibility Tests on Home-Entertainment Devices","authors":"A. Dorbuck","doi":"10.1109/ISEMC.1976.7568686","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568686","url":null,"abstract":"Malfunctioning of electronic home-entertainment equipment in the presence of strong rf fields is of growing concern to the con sumer, the government, and the various radio services involved. Even though the amateur service represents a small fraction of the total number of transmitting installations spread throughout the nation, the increasing frequency of EMI complaints is posing a threat to its continued growth and existence. Be cause of the seriousness of the problem, the American Radio Relay League has accentuated its efforts to find a solution. A general survey of the EMI situation has been under taken and susceptibility tests performed where applicable. This paper deals with the results and conclusions of those efforts undertaken at League headquarters in New ington, Connecticut.","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130657885","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}
{"title":"Intrasystem EMC Analysis Concepts and Applications","authors":"J. A. Spagon","doi":"10.1109/ISEMC.1976.7568733","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568733","url":null,"abstract":"The use o f batch computer programs to support the EMC engineering e f f o r t s during the development o f a major system i s an approach which i s becoming more universal and which w i l l even tua l ly be standard for government procure ments. Aerospace firms are now faced with evaluat ing t h i s approach and determining how they w i l l phase i t into t h e i r method o f doing b usiness . TRW developed a program in 1968 based on fundamental concepts which are genera l ly c o n s i s te n t with the current Air Force Intrasystem EMC Analysis Program (IEMCAP). During the l a s t e igh t y e a r s , considerable experience has been obtained through the ap p lica t io n o f the TRW program to a v a r ie ty o f systems including space v e h ic l e s , a i r c r a f t , m i s s i l e s , and ground s t a t io n s . The purpose o f t h i s paper i s to d i s t i l l from t h i s experience those fac tors which can be o f value in helping government and industry understand the . problems assoc ia ted with implementing t h i s approach as well as the mutual b e n e f i t s . The fo l low ing areas w i l l be d iscussed during the presentation: a . D e f in it ion and Modification o f Fundamental Concepts. b. EMC Functional Organization, S ta f f in g and Project In te r fa ces . c . Training o f Individuals and Organizational Development. d. Data Requirements, A v a i la b i l i t y , and S ynth esis . e . Project Phasing o f EMC E ffort . f . S e l l in g the Approach to Government and Contractor Project O f f i c e s . g. R elative Costs and B e n e f i t s . h. Validation o f r e s u l t s .","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128101370","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}
{"title":"Improved Techniques and Instrumentation for EMC Measurements","authors":"M. Crawford","doi":"10.1109/ISEMC.1976.7568757","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568757","url":null,"abstract":"This paper presents a survey of improved measurement techniques, instrumentation, and data presentation for accurate, meaningful evaluation of electromagnetic compatibility (EMC) of electronic systems and sub systems. These techniques and instrumentation were developed as alternatives to conventional, MIL-STD461/462, measurements which recommend screen room testing with conventional antennas. These alterna tives are used to accurately measure and quantify EM emissions from electronic equipment and/or for estab lishing standardized EM susceptibility test fields. Dramatic improvement (worst case errors of 1 to 3 dB compared with 40 dB from conventional screen room measurements) have been demonstrated. The techniques described in the paper include: 1) low-Q or under ground enclosures, 2) mode stirred, shielded enclo sures, 3) specially designed, shielded, transverse electromagnetic (TEM) cells, 4) broadband field probes capable of measuring complex average or peak fields without causing perturbation, and 5) time and ampli tude statistics for characterizing the measured data.","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128349127","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}
{"title":"The SAE RFI Specification--A Living Document","authors":"T. Carr","doi":"10.1109/ISEMC.1976.7568768","DOIUrl":"https://doi.org/10.1109/ISEMC.1976.7568768","url":null,"abstract":"During the past 40 years, the automobile industry has taken the lead in initiating and pursuing programs to measure and control electromagnetic interference from vehicles and has sought to assure compatibility of vehicles with other equipment. It has a long and successful history of cooperation in the development and use of standards relating to control of radio frequency emissions. Although the earliest efforts by the industry were aimed at protecting onboard entertainment radios, protection of other communications services has since been given primary consideration as the need for such protection was identified. This presentation will trace the history of the development of the SAE standard for measurement of electromagnetic radiation from motor vehicles from its inception, treating the need for each revision and method of acquiring the data necessary for accomplishing revision. The greatest emphasis will be placed on the latest and most extensive revision of the standard, copies of which will be available at the meeting. The report also will update the status of the SAE measurement procedure in the world community and its relationship to measurement procedures specified by other standards writing groups. Also treated in this presentation will be goals for the future of the standard, one of which is to make it a more internationally acceptable standard.","PeriodicalId":296335,"journal":{"name":"IEEE 1976 International Symposium on Electromagnetic Compatibility","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133022927","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}