2002 IEEE International Symposium on Electromagnetic Compatibility
Cơ quản chủ quản: N/A
Các bài báo tiêu biểu
Ultra-fast broadband EMI measurement in time-domain using FFT and periodogram
Tập 2 - Trang 577-582 vol.2
A novel ultra-fast, broadband time domain EMI measurement system is described
Measurements were performed in the 30-1000 MHz range. The signals from the
antenna are digitized and processed by a computer in order to obtain
fast-Fourier transform (FFT) as well as Welch and Bartlett periodograms.
Correction of errors originating from the frequency characteristics of antenna,
cable and oscilloscope is...
#Electromagnetic interference #Time domain analysis #Antenna measurements #Time measurement #Performance evaluation #Frequency #Signal processing #Fast Fourier transforms #Computer errors #Error correction
Dithered timing spread spectrum clock generation for reduction of electromagnetic radiated emission from high-speed digital system
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
New guidance on EMC and safety for machinery manufacturers
Tập 2 - Trang 680-685 vol.2
This paper introduces the new guidelines on EMC-related functional safety for
machinery manufacturers, being developed by the EMC Test Labs Association
(EMCTLA). Although the European Machinery Safety Directive requires all
electromagnetic disturbances to be taken into account to achieve safe machinery,
existing standards and guidance are weak on this issue, leading to conflicting
interpretations ...
#Electromagnetic compatibility #Machinery #Testing #IEC standards #Law #Immune system #Guidelines #Pulp manufacturing #Safety devices #Machine control
Uncertainty in radiated tests due to source polarization
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
A time-domain diagnostic method for emission measurements in TEM cells
Tập 2 - Trang 583-588 vol.2
Emission testing techniques using TEM cells are currently based on power
measurements at their port(s) in the frequency-domain. Spectrum measurements do
not give directly phase information and therefore only offer partial information
on the electromagnetic emission of an equipment under test (EUT) such as the
total radiated power. This drawback often leads to difficulties in interpreting
the emiss...
#Time domain analysis #TEM cells #Current measurement #Power measurement #Frequency measurement #Conductors #Testing #Electromagnetic radiation #Open area test sites #Frequency domain analysis
Management of EMC semi-anechoic facilities by an independent laboratory
Tập 1 - Trang 542-544 vol.1
In this paper, the management of EMC semi-anechoic facilities is discussed from
the perspective of an independent laboratory. Successful management of
semi-anechoic facilities by third-party test labs requires a strategy where they
become the clear choice by clients over open area test sites. Cost versus
performance is the criteria most clients use to select test facilities. To keep
pricing compet...
#Electromagnetic compatibility #Laboratories #Testing #Open area test sites #Certification #Radio frequency #Antenna measurements #FCC #Costs #Automation
Teaching electromagnetic compatibility in a required course for mechanical engineering students
Tập 2 - Trang 778-781 vol.2
Most engineering curricula include survey courses that expose students of one
discipline to other areas of engineering. Civil and mechanical engineers have
long been required to take at least one course from the electrical engineering
department that offers instruction in the basic concepts of areas such as
circuit analysis, digital logic design, power distribution systems, and motors.
Many of the...
#Education #Electromagnetic compatibility #Mechanical engineering #Power engineering and energy #Design engineering #Electrical engineering #Electromagnetic interference #Circuit analysis #Logic design #Power distribution
Steps for the proper development of an EMC Control Plan
Tập 2 - Trang 766-771 vol.2
The development of a major electronic product in a company is usually preceded
by the writing of an EMC Control Plan. The EMC Control Plan is written by the
senior electromagnetic compatibility engineer and eventually reviewed and
approved by management. A product being developed will adhere to the EMC Control
Plan. The quality of the EMC Control Plans vary, depending on who writes it, how
importa...
#Electromagnetic compatibility #Writing #Testing #Consumer electronics #Design engineering #Power engineering and energy #Costs #Engineering management #Manufacturing #Signal design
Comparison of correlation algorithms between GTEM cell and semi anechoic chamber
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
Managing an EMC engineering and testing organization
Tập 1 - Trang 519-523 vol.1
Managing an EMC engineering and testing organization is getting increasingly
difficult. As more IEC and CISPR standards are generated, and as the number of
product tests increase, the compliance process is becoming more complex. There
are increasing numbers of countries that are "rapid adopters" of IEC and CISPR
standards. Countries adopt these standards and then place their own unique set
of requ...
#Engineering management #Electromagnetic compatibility #Testing #IEC standards #FCC #Costs #Design engineering #Personnel #Computer industry #Postal services