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1985 IEEE International Symposium on Electromagnetic Compatibility最新文献

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Accuracy Estimation in Anechoic Chamber Testing 暗室测试的精度估计
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566935
W. Price, K. W. Canaga
T h e a s s u m p t i o n t h a t a m i s s i l e ' s operational electromagnetic environment can be a c c u r a t e l y s i m u l a t e d in an RF a n e c h o i c c h a m b e r b r i n g s c e r t a i n e r r o r s i n t o e l e c t r o m a g n e t i c c o m p a t i b i l i t y testing. A c h i e f s o u r c e of e r r o r is the d i f f e r e n c e b e t w e e n the p l a n e w a v e i l l u m i n a t i o n of an operational environment and the illumination of a d i r e c t i v e t e s t antenna. A m e t h o d o f m o m e n t s t e c h n i q u e e s t i m a t e s the s u r f a c e currents on a missile when illuminated by a p l a n e w a v e a n d b y t w o s i m p l e a n t e n n a s . T h e s e c u r r e n t s a r e c o m p a r e d to m e a s u r e the c o r r e s p o n d e n c e of the test and o p e r a t i o n a l e n v i r o n m e n t s . S i m p l e g u i d e l i n e s a r e d e v e l o p e d w h i c h a l l o w t est e n g i n e e r s to e s t i m a t e and m i n i m i z e this s o u r c e of e r r o r in RF anechoic chamber testing.
T h和m p s T或h a T m T i s s和l ' s《electromagnetic environment can be a c c r T和l y s m u l T和d还在德意志联邦共和国n和c或c h a m b和b r i n g s c和T的n和r r或r s T或l和c和T r a g n和T c c o m p a T b l i T y测试。c h和f s o u c和of e r r或r is the d和f r和c和b和t w和e no the p v n和w和l l m n t或n of an《environment and the illumination of A r和c t v和t和s t天线。m和t或d或f米或m和n r s t c和h n i q和s t m t和s the s u r f c和currents on A导弹when illuminated由p l A n和w v和n d b y t w或s i p l和t和n s。T s和c h和u r r和T s r和c o m p r和d m和s u r和c或r和s p或n d号和c和of the测试and o p和r T或l和n v r o n m和n T s。S m u g l和d d和l e d n和S和v和l或p和d w h东c h a l o w t和g n和r S和S t m t和m i n m z和c和of this S u r和r或r anechoic联邦商会测试。
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引用次数: 2
Feed Cable Resonance in a TEM Cell TEM电池中的馈电电缆共振
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566995
S. Kashyap
This paper deals with the effect of grounding conditions on field enhancement by an equipment in a TEM cell. It is shown that the length and dia­ meter of the feed cable greatly affect the field to which the equipment under test (EUT) is exposed to.
本文研究了瞬变电磁箱中接地条件对设备增强磁场的影响。研究表明,馈电电缆的长度和直径对被测设备所处的环境有很大的影响。
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引用次数: 1
A Simple Theory for Predicting the Electromagnetic Performance of Enclosures Using Impedance and Polarizability Measurements 用阻抗和极化率测量预测外壳电磁性能的简单理论
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566996
L. Hoeft
The th e o ry o f Madle and H o e f tH l f o r un der ­ s t an d in g th e magnetic f i e l d a t t e n u a t i o n of e n c lo s u re s has been r e f i n e d so t h a t i t can be used t o q u a n t i t a ­ t i v e l y p r e d i c t th e e le c t ro m a g n e t i c performance of e l e c t r i c a l l y small e n c l o s u r e s . Using th e t r a n s f e r impedance of th e j o i n t s , th e s u r f a c e impedance of sh i e ld e d a p e r t u r e s , and th e p o l a r i z a b i l i t y o f a p e r ­ t u r e s , t h i s th e o ry p r e d i c t s th e s u r f a c e magnetic f i e l d a t t e n u a t i o n ( t h e r a t i o o f th e s u r f a c e magnetic f i e l d on th e e x t e r i o r o f th e e n c lo su re t o th e mag­ n e t i c f i e l d i n s id e th e e n c l o s u r e ) . I n t ro d u c t io n The s o l u t i o n of many e l e c t ro m a g n e t i c c o m p a t i b i l ­ i t y problems r e q u i r e s th e a n a l y s i s o r p r e d i c t i o n of t h e e le c t ro m a g n e t i c performance o f s h i e ld e d e n c l o ­ s u r e s . The l i t e r a t u r e does not c o n ta in any s h i e ld i n g a n a l y s i s te c h n iq u e t h a t could be used t o ana lyze the s h i e ld i n g performance o f a wide range of e n c lo s u re s us ing fundamental p h y s i c a l p r i n c i p l e s such as c u r r e n t d i f f u s i o n , a p e r t u r e c o u p l in g , and j o i n t r e s i s t a n c e . This lack o f a c r e d i b l e , v a l id a t e d a n a l y s i s te ch n iq ue i s a major reason f o r e x p e r im e n ta l l y e v a l u a t i n g s p e c i f i c e n c lo su re d e s ig n s on a c a se b y -c a se b a s i s . A c r e d i b l e a n a l y s i s te ch n iq u e would be a tremen­ dous a s s e t t o a s h i e l d i n g des ig n program because i t would a l low th e d e s i g n e r t o choose th o se c o n s t r u c t io n t e ch n iq u es t h a t were a p p r o p r i a t e t o th e s p e c i f i c q u a n t i t a t i v e r e q u i rem en t . He could a l s o i n c o rp o ra t e c o n s t r u c t i o n te c h n iq u e s t h a t o f f e r e d a p o s i t i v e b e n e f i t w i th r e s p e c t t o c o s t and avoid p r a c t i c e s t h a t were d i f f i c u l t o r expensive to manufactu re whi le p rov id in g on ly marg inal improvement. Of p a r t i c u l a r importance was th e use o f g a s k e t s . These a re expen­ s iv e t o i n s t a l l and m a in t a in , and t h e r e i s no q u a n t i ­ t a t i v e method to d e te rm ine i f they a re needed. Along with th e d e s i r e t o have a c r e d i b l e s h i e ld i n g a n a l y s i s t e c h n iq u e , a b e t t e r method f o r s p e c i fy i n g s h i e l d i n g e f f e c t i v e n e s s i s d e s i r e d . The IEEE d e f i n i t i o n of s h i e l d i n g e f f e c t i v e n e s s ( i . e . , the r a t i o o f th e f i e l d a t a p o i n t , w i th and w i th o u t the e n c lo su re ) i s ve ry p r a c t i c a l , bu t i t i s no t based on f i rm p h
测量或f th和s u r和l f c和magnet ic - t和n - u t d号号我of a wide范围或f和c s 12个,3]have shown t h a t c u r和r u s或n f s得到r tan降14.1吨低uen f r和q - c中(l和s s than a few t和n s或k h和u l r t z)或r when t h和c号和wal l i s t h的n。P r a t c l examples或f t h和l t t和r号c或d t n或c / d和网状wire f r或r和q - ies below uenc 1 MHz和m和t a l h c或c o r f和g s - q ies below uenc r和l t或f (magnuson MHz。For most号和c s u s made metal t或f l和s t 1毫米(0。040 inch) t i c k,荷兰国际集团(ing) th和predominant up l机制之间th和或u t d和d s of th和n c上的s th和t s n c e或f th和j . o t s and p和r t u r和c或p l g。When和n c有关王s f l l和d . w . i th r和l和c或c列出p和t, conduc n和r t或t s such as th和power and s gl n g may l w的p r s t u u u和荷兰国际集团(ing)或th和r政变l机制。However, conduc列出p和t和r t或t s / m和n和r l 14.1 not cons id和红t be t r a t或f th和n c上与w l l不t be在c luded th和t h e或ry p s e y s d t h动画y。Thus, th和初级或b j c v t或f th和或ry r p r和d - i c t g t h和c t ro m a g n和t c表现of an c -上p r s t或f或账户a t c l公司p和r f和c t n s前d和f和c t s such as a p和r t u r和s和j r n和n c和s吨。t - l - s或would be d和s r a b和f或th和th或ry t或f账户或r r和c r s u / f号th of conduc t的表现和c有关s can be analyzed t f r和q u和n c ie s where the f和c v t wall t I c k n和s s l和丹丹s sk在副th。The t和c罗号m a g n和t c l y s或f号和s u s can be e s i m p l e d和d”的id号,c或s和r s t u u u或n s where th和c号和s和l和c t r i c a l y sm a l。For th如果c s和s, t h e r和s, s y g c h a phase d号f和r和c和f和l d s之间,c r和r s和v - g和s t或l t d号f和r和t或t s th和和no c或s u r;我可以用一根绳子把它捆起来,用一根绳子把它捆起来,用一根绳子把它捆起来,用一根绳子把它捆起来,用一根绳子把它捆起来,用一根绳子把它捆起来,用一根绳子把它捆起来,用一根绳子把它捆起来。t h s i m p l, icarus i f i c t或n doc或t, s和r u s t l m或no - th a号和y s n c和s most和no c或s u r和s, c / d g r c k s、l和s s tha号a few rs在目的地s z f和h和t和r或r和l和c t r a l l y small c f r或r和u n c的ie s below a hundred megaher 120011。设备箱a re s m a l e r;t h e和f或r和th和s m p l f i c t o n不,n t r - s和r我将u s号c和r u a n和s t u l gl h和f r和q u n c ie s r和reached。The p r和s和t s tudy p有关with a r i c t i n g . th和c罗m a g n和t c表演of n c s u s when th和源码s或s d e。The th和或ry systran be扩展to c a如果s where th和源码s在s id和th和no c或s m,但t h x s和t和n - n would r和u r和荷兰国际集团(ing) fix assumptions rn - th边界c或d t或n u s id号和th和c上与t h和n t r d u我t或f c on cep t s such as s l t as an十号,和t c。,你的账户是f o r a l l t h e ph ys ica l p r i n c i p l e s。已知t h b th的f和l e d t t t和n u s和n和r g l 14.1吨th和审查不,不拍d r i c t s。1950年,昆!4 !第四developed剧情在n或v t和c h智商u和f或r为forming a t c l a n l和y s of no c或s u r和s, s p和l l y when a th和源码是i n s d。在1981年,CaseyiS] t h和o r和t c l l y a级和s g t a t和d p和r - t u r和s - th cond阿联酋、告t的f网状lm s and wire。的或th和r t h n g, s, t du c edc th和fdi of an f和c t v和magnet i p o l e b r i t y a d s t u r b t和d
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引用次数: 3
GEMACS - An Executive Summary GEMACS -执行摘要
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566922
K. Siarkiewicz
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引用次数: 5
Mechanism of the Switching Transient in a Low-Voltage DC System 低压直流系统开关暂态的机理
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566910
Jilin Shi, R. M. Showers
A co h e re n t d e s c r i p t i o n o f th e sw i tc h in g t r a n s i e n t and i t s development i s g iven . The mechanism o f the t r a n s i e n t i s analyzed in terms o f gaseous d is ch a rg e and wave r e f l e c t i o n phenomena. Two elementa l t r a n ­ s i e n t s and t h r e e b a s i c p a t t e r n s o f t h e t r a n s i e n t s and t h e i r t r a n s i t i o n a re e x p la in e d in d e t a i l . The pr imary conc lu s ion s o f th e a n a l y s i s a r e confi rmed by e x p e r i ­ mental o b s e r v a t i o n s .
在此给出了一个关于气旋和气旋发展的初步结论。从气态和波态现象的角度分析了湍流的机理。两个元素的气态和波态现象都会在 d e t a i l 中产生 x p la in e。这些研究的主要内容都是通过电子政务技术来实现的。
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引用次数: 0
Setting Standards for Radio-Frequency Radiation Exposure 制定射频辐射暴露标准
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566991
J. M. Clemmensen
RF EXPOSURE STAN PAR D S SETTING IN S T IT U T IO N S Setting standards is a sociopolitical as well as a scientific process. Public concern and controversy over the use of nonionizing radiation technology is increasing and delaying industry facility contruction. Exposure to some level of nonionizing radiation, beyond that naturally occurring in the environment, is an inescapable consequence of modern-day use of the electromagnetic spectrum for broadcast and other purposes. The Environmental Protection Agency (EPA) has determined the greatest contributor of radio­ frequency radiation (RFR) to the ambient environment: the FM broadcast band (TV video). The biological effects of RFR are well understood for continuous exposure to high power density levels (>100 mW/cm2). Positive data on low-level (<1 mW/cm2) exposures are difficult to find in the literature. The decision to set standards can be based on the potential health hazard (the scientific, rational, basis for standards) or on the operational need for a standard to allay public fears and reduce the attrib­ utable litigation and delay costs.* Setting Standards as a Process A reasonable model of the process of setting standards for the scientific RFR is given in an inter­ agency task force report (Figure l).2 The roman [Source: Figure 1 , B E N E R Task Force, 1 9 8 0 ] ........ FIGURE 1 ELEMENTS OF THE PROGRAM ON BIOLOGICAL EFFECTS RECOMMENDED BY THE BENER TASK FORCE numerals show the recommended time course of the process; the "feedback" loops incorporate the idea of revision. As the state of our scientific knowledge increases we may develop more precise models of population exposure, and hence the probabililty of being exposed to various levels of RFR. We shall also be able to refine models of the biological effects from threshold-value determinations to probability distributions. This level of quantification is necessary before risk assessments can be attempted. And risk assessments, which apply probabilities to the value of "life and limb" in units of dollars, must precede economic cost/benefit analysis. This last is a requirement of all federal proposals for regula­ tion. 3 Setting standards involves both private and public-sector institutions (Figure 2). The process of PRIVATE SECTOR
射频暴露标准的制定是一个社会政治过程,也是一个科学过程。公众对使用非电离辐射技术的关注和争议正在增加,并延误了工业设施的建设。暴露于某种程度的非电离辐射,超出了环境中自然产生的辐射,是现代使用电磁频谱用于广播和其他目的的不可避免的后果。环境保护署(EPA)已经确定了无线电频率辐射(RFR)对周围环境的最大贡献者:调频广播频段(电视视频)。对于持续暴露于高功率密度水平(>100 mW/cm2)的RFR的生物学效应,人们已经很清楚。在文献中很难找到低水平(<1 mW/cm2)暴露的阳性数据。制定标准的决定可以基于潜在的健康危害(标准的科学、合理基础),也可以基于标准的业务需要,以减轻公众的恐惧,减少可调整的诉讼和延误成本。一份机构间工作组的报告(图1)给出了为科学的RFR制定标准过程的合理模型(图1)罗马[来源:图1,B E N E R Task Force, 1980] ........图1 BENER工作小组推荐的生物效应项目的要素数字显示了该过程的推荐时间过程;“反馈”循环包含了修改的概念。随着我们科学知识水平的提高,我们可能会开发出更精确的人口暴露模型,从而确定暴露于不同水平RFR的可能性。我们还将能够改进从阈值确定到概率分布的生物效应模型。在尝试进行风险评估之前,这种程度的量化是必要的。而风险评估——将概率应用于以美元为单位的“生命和肢体”价值——必须先于经济成本/收益分析。最后一项是所有联邦监管提案的要求。制定标准涉及私营和公共机构(图2)。私营部门的过程
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引用次数: 0
A VHF/UHF Broadcasting System Model to Optimize the Spectrum Space Use 一种优化频谱空间利用的VHF/UHF广播系统模型
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566945
W. Waszkis
The i m p l e m e n t a t i o n o f t h e s p e c t r u m spaos u se c o n c e p t i n d e s i g n o f VHF/UHF b r o a d c a s t i n g s y s t e m i s s h o w n . The m o d e l o f t h e s y s t e m i s d e s c r i b e d . As an e x a m p le t h e l o w p o w e r t e l e ­ v i s i o n n e t w o r k i s p r e s e n t e d . The f o l l o w i n g s t a g e s o f n e t w o r k d e s i g n a r e c o n s i d e r e d f r o m t h e e f f i c i e n c y o f s p e c t r u m s p a c e use p o i n t o f v i e w .
VHF/UHF b r o a d c s t i n g s y s t e m i s h o w n . T h e m o d e l o f t h e s y s t e m i s d e c r i b e d .作为一项重要的任务,我们将继续努力。在新技术的应用中,我们发现了一些新的方法。
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引用次数: 0
Comparison of Absorber Lined Chamber and Open-Field Measurements 吸收器衬里室与开场测量的比较
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566936
S. Kashyap, S. Mishra, R. Balaberda
This paper concerns the comparison of antenna measurements made in an absorber lined chamber and at an open-field test site. Antenna impedance and transmission loss measurements for both polariz­ ations were made in the 30-1000 MHz range at both sites and compared.
本文比较了在衬里吸收体室和露天试验场进行的天线测量。天线阻抗和传输损耗测量在30-1000 MHz范围内进行了比较。
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引用次数: 0
Bit-Error Rates Due to EMI 由电磁干扰引起的误码率
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566980
William E. Slauson
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引用次数: 0
Meeting the VDE Requirements 满足VDE要求
Pub Date : 1985-08-01 DOI: 10.1109/ISEMC.1985.7566990
I. Straus
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引用次数: 0
期刊
1985 IEEE International Symposium on Electromagnetic Compatibility
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