Pub Date : 2005-05-23DOI: 10.1109/ISEMC.2003.1236555
Z. Wang, O. Wada, R. Koga
Power bus resonance characteristics of a gapped power-plane with a slit and a split power-plane with a gap were studied, using a fast algorithm based on a full cavity-mode resonator model and the segmentation method. Inductance and capacitance models were used to account for a field coupling along the slit and across the gap, respectively. Good agreements between the calculated and measured results were found to demonstrate the effectiveness and accuracy of our fast algorithm and the segmentation method, as well as the inductance model for the slit and the capacitance model for the gap.
{"title":"Modeling of gapped power bus structures for isolation using cavity modes","authors":"Z. Wang, O. Wada, R. Koga","doi":"10.1109/ISEMC.2003.1236555","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236555","url":null,"abstract":"Power bus resonance characteristics of a gapped power-plane with a slit and a split power-plane with a gap were studied, using a fast algorithm based on a full cavity-mode resonator model and the segmentation method. Inductance and capacitance models were used to account for a field coupling along the slit and across the gap, respectively. Good agreements between the calculated and measured results were found to demonstrate the effectiveness and accuracy of our fast algorithm and the segmentation method, as well as the inductance model for the slit and the capacitance model for the gap.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115616163","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.2003.1236628
D. Kam, Jonghoon J. Kim, Joungho Kim, Piljung Jun
In modern digital systems, most of electromagnetic radiated emission originates from high-speed digital clock signal. In order to reduce the electromagnetic radiated emission from the clock signal, spread spectrum clock had been used. It had been conventionally realized by modulating the period of a regular clock, using a phase locked loop (PLL) or a delay locked loop (DLL). However, neither of them can be implemented with simple circuit. To overcome this, suppressed carrier clock (SCC) has been recently proposed, which is implemented by intentionally skipping transitions of a regular clock. In this paper, we analyze the effects of modulation profile on the suppression of electromagnetic radiated emission. Numerical simulation results show that saw-tooth modulation is an optimal method in terms of performance and feasibility. We also propose a simple circuit for modulation and demodulation of the SCC with the saw-tooth modulation profile. Finally, we implemented the proposed circuit on an ALTERA chip, and it achieves 6 dB suppression of electromagnetic radiated emission.
{"title":"Suppressed carrier clock for reduction of electromagnetic radiated emission from high-speed digital system","authors":"D. Kam, Jonghoon J. Kim, Joungho Kim, Piljung Jun","doi":"10.1109/ISEMC.2003.1236628","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236628","url":null,"abstract":"In modern digital systems, most of electromagnetic radiated emission originates from high-speed digital clock signal. In order to reduce the electromagnetic radiated emission from the clock signal, spread spectrum clock had been used. It had been conventionally realized by modulating the period of a regular clock, using a phase locked loop (PLL) or a delay locked loop (DLL). However, neither of them can be implemented with simple circuit. To overcome this, suppressed carrier clock (SCC) has been recently proposed, which is implemented by intentionally skipping transitions of a regular clock. In this paper, we analyze the effects of modulation profile on the suppression of electromagnetic radiated emission. Numerical simulation results show that saw-tooth modulation is an optimal method in terms of performance and feasibility. We also propose a simple circuit for modulation and demodulation of the SCC with the saw-tooth modulation profile. Finally, we implemented the proposed circuit on an ALTERA chip, and it achieves 6 dB suppression of electromagnetic radiated emission.","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":"115305853","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.2003.1236573
R. Carlton
The characterization of the electromagnetic compatibility (EMC) performance of integrated circuits (ICs) is receiving increasing focus as new applications and technology trends combine to raise the complexity of EMC compliance. The increased focus is driving the need for standardized measurement procedures to enable comparison of different devices. This paper describes the work in process by IEC TC47/SC47A Working Group 9 to standardize emissions and immunity EMC test methods for integrated circuits. The two standards currently in development for RF radiated and conducted emissions, as well as their status, are discussed.
{"title":"An overview of emerging international measurement standards in electromagnetic compatibility for integrated circuits","authors":"R. Carlton","doi":"10.1109/ISEMC.2003.1236573","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236573","url":null,"abstract":"The characterization of the electromagnetic compatibility (EMC) performance of integrated circuits (ICs) is receiving increasing focus as new applications and technology trends combine to raise the complexity of EMC compliance. The increased focus is driving the need for standardized measurement procedures to enable comparison of different devices. This paper describes the work in process by IEC TC47/SC47A Working Group 9 to standardize emissions and immunity EMC test methods for integrated circuits. The two standards currently in development for RF radiated and conducted emissions, as well as their status, are discussed.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"5 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":"115641616","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.2003.1236715
L. Musso, F. Canavero, B. Démoulin, V. Berat
We present the experimental radiated immunity results of an electronic device with an external wire obtained in reverberation and anechoic chambers. Repeatability and reproducibility of reverberation chamber measurements are investigated by repeating the test in three reverberation chambers with different characteristics. We show how the current state of the art allows a statistical control of RC measurement repeatability within an industrial installation, and that a statistical correlation with AC results frequency by frequency is possible in particular cases relevant to automotive applications.
{"title":"Radiated immunity testing of a device with an external wire: repeatability of reverberation chamber results and correlation with anechoic chamber results","authors":"L. Musso, F. Canavero, B. Démoulin, V. Berat","doi":"10.1109/ISEMC.2003.1236715","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236715","url":null,"abstract":"We present the experimental radiated immunity results of an electronic device with an external wire obtained in reverberation and anechoic chambers. Repeatability and reproducibility of reverberation chamber measurements are investigated by repeating the test in three reverberation chambers with different characteristics. We show how the current state of the art allows a statistical control of RC measurement repeatability within an industrial installation, and that a statistical correlation with AC results frequency by frequency is possible in particular cases relevant to automotive applications.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"3 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":"121238801","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.2003.1236583
M. Albach, H. Rossmanith
An EMC experiment is described, which demonstrates a combination of ohmic, capacitive and inductive coupling. Based on the test set-up, an equivalent circuit is derived, which can be used to analyze and to explain the somewhat unexpected behavior of the test set-up during the different experiments. These experiments are used as part of an EMC course and the procedure of how to understand the underlying effects will be explained in this paper step by step.
{"title":"Teaching coupling mechanisms - a case study","authors":"M. Albach, H. Rossmanith","doi":"10.1109/ISEMC.2003.1236583","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236583","url":null,"abstract":"An EMC experiment is described, which demonstrates a combination of ohmic, capacitive and inductive coupling. Based on the test set-up, an equivalent circuit is derived, which can be used to analyze and to explain the somewhat unexpected behavior of the test set-up during the different experiments. These experiments are used as part of an EMC course and the procedure of how to understand the underlying effects will be explained in this paper step by step.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"46 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":"127231762","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.2003.1236577
E.R. Heise, R. Heise
Radiated electric field measurements were obtained using linear polarized antennas, oriented at quadrature to each other, at a 10 m separation. Detected signals from the "on-axis" source antenna were attenuated less than 20 dB. These signals, if considered to be error signals, give rise to added uncertainty in a test.
{"title":"Quadrature polarization uncertainty in radiated tests","authors":"E.R. Heise, R. Heise","doi":"10.1109/ISEMC.2003.1236577","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236577","url":null,"abstract":"Radiated electric field measurements were obtained using linear polarized antennas, oriented at quadrature to each other, at a 10 m separation. Detected signals from the \"on-axis\" source antenna were attenuated less than 20 dB. These signals, if considered to be error signals, give rise to added uncertainty in a test.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"188 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":"123286672","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.2003.1236719
E. Li, H. Jin, W. Yuan, Lewei Li
To efficiently and accurately predict and simulate the signal propagation for very high speed (10 GHz above), high density and even multilayer boards, the fast full wave numerical techniques have to be employed. However, it consequently needs very large computing capacity and resources which not every electronic design firm can afford. This paper presents the implementation of the parallel computing method in the full wave FDTD and the simulation of signal integrity with high frequency. The computing method could be employed in such a way that numbers of PC's are networked as PC-cluster parallel computing which are affordable to any of the companies. Moreover, the paper illustrates the simulation of signal propagation characteristics in the very high speed differential signal transmission lines by using our specially developed parallelized finite-difference time-domain (FDTD) algorithm. The crosstalk and reflection between the traces is simulated with the different geometry parameters. The efficiency by using parallel computing method is highlighted in the paper.
{"title":"Parallelized computational technique for signal propagation analysis at very high speed differential transmission lines","authors":"E. Li, H. Jin, W. Yuan, Lewei Li","doi":"10.1109/ISEMC.2003.1236719","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236719","url":null,"abstract":"To efficiently and accurately predict and simulate the signal propagation for very high speed (10 GHz above), high density and even multilayer boards, the fast full wave numerical techniques have to be employed. However, it consequently needs very large computing capacity and resources which not every electronic design firm can afford. This paper presents the implementation of the parallel computing method in the full wave FDTD and the simulation of signal integrity with high frequency. The computing method could be employed in such a way that numbers of PC's are networked as PC-cluster parallel computing which are affordable to any of the companies. Moreover, the paper illustrates the simulation of signal propagation characteristics in the very high speed differential signal transmission lines by using our specially developed parallelized finite-difference time-domain (FDTD) algorithm. The crosstalk and reflection between the traces is simulated with the different geometry parameters. The efficiency by using parallel computing method is highlighted in the paper.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"55 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":"114582288","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.2003.1236684
C. E. Jones, D. Schramm
This paper documents the results of a measurement study to determine if low frequency radiated electric field emissions (10 kHz-30 MHz) and radiated magnetic field emissions (60 Hz-30 MHz) can be suitably measured in a 10 meter absorber lined (semi-anechoic) chamber.
{"title":"Low frequency correlation of radiated emission measurements between a semi-anechoic chamber and an OATS or a weather protected sites","authors":"C. E. Jones, D. Schramm","doi":"10.1109/ISEMC.2003.1236684","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236684","url":null,"abstract":"This paper documents the results of a measurement study to determine if low frequency radiated electric field emissions (10 kHz-30 MHz) and radiated magnetic field emissions (60 Hz-30 MHz) can be suitably measured in a 10 meter absorber lined (semi-anechoic) chamber.","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":"114590062","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.2003.1236614
H. Bruns, H. Singer
The method of moments (MoM) has become widely used and accepted in computational electromagnetics. In the area of EMC the MoM has some major advantages compared to other methods. It directly provides a solution for noise currents and voltages EMC engineers are frequently interested in, and free space radiation is automatically included. Once the solution of the problem has been computed the question arises whether the results are convergent, numerically stable, and reliable. Do the results conform to the physical requirements and are they related to the real situation? In this paper guidelines are given in order to find answers to these questions. Checking the credibility of numerical results is strongly recommended in any case. The validation phase may take time and thus may be relevant to the cost accounting of an EMC analysis project.
{"title":"Validation of MoM simulation results","authors":"H. Bruns, H. Singer","doi":"10.1109/ISEMC.2003.1236614","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236614","url":null,"abstract":"The method of moments (MoM) has become widely used and accepted in computational electromagnetics. In the area of EMC the MoM has some major advantages compared to other methods. It directly provides a solution for noise currents and voltages EMC engineers are frequently interested in, and free space radiation is automatically included. Once the solution of the problem has been computed the question arises whether the results are convergent, numerically stable, and reliable. Do the results conform to the physical requirements and are they related to the real situation? In this paper guidelines are given in order to find answers to these questions. Checking the credibility of numerical results is strongly recommended in any case. The validation phase may take time and thus may be relevant to the cost accounting of an EMC analysis project.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"33 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":"122123594","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.2003.1236727
C. Lochot, J. Levant
The ICEM standard (Integrated Circuit Electromagnetic Model) was proposed by the French standard committee (UTE) where many semi-conductor manufacturers and final users are involved. The ICEM standard proposal is nowadays registered as a Technical Report (IEC62014-3). In the first part of this paper, the authors will present the architecture of the model. In the second part, they will describe different methods to characterize the parameters of the model. Finally, comparisons between measurement and simulation results highlight the capability of this approach for the prediction of the electromagnetic emission of an IC.
{"title":"ICEM: a new standard for EMC of IC definition and examples","authors":"C. Lochot, J. Levant","doi":"10.1109/ISEMC.2003.1236727","DOIUrl":"https://doi.org/10.1109/ISEMC.2003.1236727","url":null,"abstract":"The ICEM standard (Integrated Circuit Electromagnetic Model) was proposed by the French standard committee (UTE) where many semi-conductor manufacturers and final users are involved. The ICEM standard proposal is nowadays registered as a Technical Report (IEC62014-3). In the first part of this paper, the authors will present the architecture of the model. In the second part, they will describe different methods to characterize the parameters of the model. Finally, comparisons between measurement and simulation results highlight the capability of this approach for the prediction of the electromagnetic emission of an IC.","PeriodicalId":359422,"journal":{"name":"2003 IEEE Symposium on Electromagnetic Compatibility. Symposium Record (Cat. No.03CH37446)","volume":"47 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":"129824643","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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