2002 IEEE International Symposium on Electromagnetic Compatibility
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Developing an EMC site as a management resource
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 529-535 vol.1
In this paper, we describe the process utilized to develop a comprehensive EMC management strategy to support engineering and design groups at our San Diego Technology Center- SDTC. The development of a new EMC management program and constructing a supporting facility is key for support of television, computer and computer display's digital cable boxes, digital satellite receivers, digital video r......
#Electromagnetic compatibility #Resource management #Computer displays #Technology management #Engineering management #Design engineering #Cable TV #Satellite broadcasting #TV receivers #Product development
Radiated susceptibility of wiring system aboard lightning struck aircraft. Part I: sensitivity to the p.u.l. external parameters
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 65-70 vol.1
The sensitivity of the radiated susceptibility of cable bundles aboard lightning struck aircraft, against variations of the p.u.l. external parameters is analyzed. The influence that these parameters have on the short-circuit currents and open-end voltages induced on cable bundles, as regards variations of the installation configuration and geometrical set-up is investigated. A strategy is propose......
#Wiring #Lightning #Power cables #Computational modeling #Cable shielding #Aircraft propulsion #Voltage #Electromagnetic fields #IEEE members #Circuits
Uncertainty in radiated tests due to source polarization
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 506-508 vol.1
Radiated uncertainty calculations are based on instrumentation and transducer factors for testing at a site that conforms to normalized site attenuation criteria, such as ANSI C63.4. The criterion is obtained using linear polarized antennas to measure like polarized sources. Equipment testing or troubleshooting generally conforms to this model, but some very substantial vertical signals can be gen......
#Uncertainty #Testing #Polarization #Dipole antennas #Frequency #Receiving antennas #Broadband antennas #Attenuators #Mutual coupling #Signal processing
Comparison of correlation algorithms between GTEM cell and semi anechoic chamber
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 481-485 vol.1
The main purpose of GTEM cell as an alternative facility for EMC compliance testing is to accurately measure the radiated emission generated from an equipment-under-test (EUT). The open area test site (OATS) is the standard test facility for radiated emission measurements, thus the GTEM cell data have to be correlated to the OATS results. The correlation algorithms between GTEM cell and OATS such ......
#TEM cells #Anechoic chambers #Open area test sites #Testing #Electromagnetic compatibility #Measurement standards #Test facilities #Area measurement #Antenna measurements #Position measurement
Maintain and validate radiated emissions measurements in a 10 meter semi-anechoic chamber
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 492-497 vol.1
In this paper, the authors describe the methods and procedures used to maintain and validate a 10 meter semi-anechoic chamber used for radiated emissions measurements. Included are a list of monthly, semi-annual, annual, and as needed checks and an approach for measurement software/hardware validation. Finally, they discuss a method by which to verify that a semi-anechoic chamber's measurement sys......
#Antenna measurements #Cables #Gain measurement #Connectors #Inspection #Hardware #Performance evaluation #Receiving antennas #Qualifications #Brushes
Description of magnetic field distributions caused by single-pole encapsulated switchgear
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 440-445 vol.1
Power frequency magnetic fields produced by switchgear might interfere with sensitive equipment or might even conflict with exposure limits for people. In order to prevent possible influences the knowledge of the magnetic field levels at locations under concern is necessary. Though the magnetic field distributions of switchgear installations are mainly determined by the physical arrangement of the......
#Magnetic fields #Switchgear #Magnetic field measurement #Electromagnetic transients #Frequency #Bars #Moment methods #Switching circuits #Automation #Encapsulation
Dithered timing spread spectrum clock generation for reduction of electromagnetic radiated emission from high-speed digital system
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 413-418 vol.1 - 2002
In modern digital systems, the most amount of radiation from the system is caused by the high-speed digital clock signal. As a method to reduce the electromagnetic radiation from the system clock, a spread spectrum clock technique that modulates the system clock frequency had been introduced. The conventional spread spectrum clock is realized by controlling the period or the frequency using a phas......
#Timing #Spread spectrum communication #Clocks #Electromagnetic radiation #Digital systems #Frequency #Phase locked loops #Jitter #Attenuation #Delay
EMC and functional safety, impact of IEC 61000-1-2
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 353-358 vol.1
The IEC Technical Specification called: "Methodology for the achievement of functional safety of electrical and electronic equipment with regard to electromagnetic phenomena" is clarified. This document is based on the work of three Technical Committees of the IEC: TC77 with regard to the EMC aspects, SubCommittee 65A with regard to the basic safety considerations and TC 56 with regard to the asse......
#Electromagnetic compatibility #IEC standards #Product safety #Safety devices #Spaceborne radar #Communication switching #Electrical safety #Electronic equipment #Degradation #Postal services
Reduction in radiated emission by symmetrical power-ground layer stack-up PCB with no open edge
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 262-267 vol.1
Power-ground plane resonance of multi-layer PCB causes a large amount of emission from the edges of power-ground plane. To reduce the emission, symmetrical power-ground layer stack-up PCBs with no open edge have been developed. The symmetrical boards significantly reduce the emission to almost no peak and additionally have the great advantages of signal integrity and packaging density.
#Resonance #Dielectric measurements #Dielectric losses #Frequency #Packaging #Density measurement #Power measurement #Connectors #Signal generators #Clocks
EMI measurement method above 1 GHz-influences of EUT size and receiving antenna beamwidth
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 2 - Trang 611-614 vol.2
The measurement method of EMI radiated from information technology equipment (ITE) above 1 GHz has been discussed in CISPR. The authors think that further discussions are necessary of EUT size, measurement distance, receiving antenna beamwidth, material of EUT table, etc. In this paper, we describe the influence of EUT size and receiving antenna beamwidth upon the measurement results.
#Electromagnetic interference #Antenna measurements #Size measurement #Receiving antennas #Electric variables measurement #Area measurement #Microwave measurements #Antennas and propagation #Extraterrestrial measurements #Reflection
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