2002 IEEE International Symposium on Electromagnetic Compatibility

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Uncertainty in radiated tests due to source polarization
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 506-508 vol.1
E.R. Heise, R.E.W. Heise
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...... hiện toàn bộ
#Uncertainty #Testing #Polarization #Dipole antennas #Frequency #Receiving antennas #Broadband antennas #Attenuators #Mutual coupling #Signal processing
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
P. Rose, M. Luvara
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...... hiện toàn bộ
#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
B.W. Jaekel
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...... hiện toàn bộ
#Magnetic fields #Switchgear #Magnetic field measurement #Electromagnetic transients #Frequency #Bars #Moment methods #Switching circuits #Automation #Encapsulation
Radiated emission from a multilayer PCB with traces placed between power/ground planes
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 253-257 vol.1
T. Harada, H. Sasaki, T. Kuriyama
Mechanism of radiated emission induced by traces placed between power/ground planes and the radiation reduction technique are described. Those internal traces can cause voltage bounce between the power/ground planes and this bounce results in high-level radiated emissions at resonant frequencies. Radiated emission characteristics depend on the trace location in the board; radiation level is high w...... hiện toàn bộ
#Nonhomogeneous media #Frequency #Voltage #Power distribution #Printed circuits #Spectral analysis #Signal generators #Antenna measurements #Coaxial cables #Electromagnetic compatibility
The influence of the instruction codes on radiated near-magnetic-fields $a case study on A5000
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 167-172 vol.1
A. Mutoh, S. Nitta, E. Takamura, T. Tsukagoshi
It has been said that the radiated electromagnetic emission (EMI) spectra from the computer change with the kind of the program executed on the computer. In this study, as a first step to investigate the influence of program on EM, the influence of instruction codes executed on a CPU on radiated near-magnetic-field is clarified by experiments and investigation on the timing chart of a CPU. It is c...... hiện toàn bộ
#Computer aided software engineering #Clocks #Electromagnetic interference #Antenna measurements #Computer aided instruction #Frequency #Timing #Measurement standards #Microcomputers #Electromagnetic radiation
Considerations for quadrature receiver calibration using frequency weighted least squares FIR filter design
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 123-127 vol.1
R.A. Green, D.C. Farden, Xiao Yan
When designing a filter for use in mitigating electromagnetic interference (EMI), one of the primary considerations is that the actual filter response conforms closely to the desired response. For many applications, finite impulse response (FIR) filters are used to provide the desired response. One particularly useful and flexible FIR filter design technique is frequency weighted least squares (FW...... hiện toàn bộ
#Calibration #Least squares methods #Finite impulse response filter #Frequency response #Neodymium #Interference #Data processing #Nonlinear filters
Influence of the technology on the destruction effects of semiconductors by impact of EMP and UWB pulses
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 87-92 vol.1
M. Camp, H. Garbe, D. Nitsch
In this paper the influence of TTL- and CMOS-technology on the destruction effects of semiconductors by impact of EMP and UWB pulses is determined. Different logic devices like NANDs and inverters were exposed to high amplitude transient pulses.
#EMP radiation effects #Electric breakdown #Pulse measurements #Electromagnetic waveguides #CMOS technology #Electric variables measurement #Electromagnetic transients #Electromagnetic fields #Electromagnetic measurements #Modems
Adjacent electric field and magnetic field distribution measurement system
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 1 - Trang 395-400 vol.1
S. Kazama, K.I. Arai
The authors have developed an adjacent electromagnetic field distribution measurement system using a unique sensor and three-input phase-difference measurement technique that can simultaneously measure electric and magnetic field (magnitude and phase) distributions up to 3 GHz. Electric and magnetic field distributions measured by this new system have produced superior results and more useful info...... hiện toàn bộ
#Magnetic field measurement #Electric variables measurement #Magnetic sensors #Electromagnetic measurements #Electromagnetic fields #Sensor systems #Phase measurement #Electromagnetic analysis #Magnetic analysis #Measurement techniques
Field coupling to nonuniform transmission lines with linear characteristic impedance
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 2 - Trang 621-626 vol.2
D. Bellan, S. Pignari
In this paper, plane wave field-coupling onto a nonuniform, lossless, transmission line running over a ground plane is solved analytically by means of a power series expansion in the longitudinal variable z. A linear variation of the characteristic impedance versus z is assumed. It is shown via examples that the obtained analytical results represent the limit solution of the approach based on the ...... hiện toàn bộ
#Distributed parameter circuits #Impedance #Power transmission lines #Transmission line theory #Voltage #Electromagnetic compatibility #Conductors #Propagation losses #Electromagnetic coupling #Numerical simulation
Tác động tải của EUT đến mức điện trường tối đa trong phòng cộng hưởng cho kiểm tra miễn nhiễm Dịch bởi AI
2002 IEEE International Symposium on Electromagnetic Compatibility - Tập 2 - Trang 972-975 vol.2
Darning Zhang, Erping Li
Trong một thử nghiệm miễn nhiễm EMC, điện trường tối đa do cơ sở thử nghiệm tạo ra gây ra nhiều mối quan tâm. Bài báo này trình bày một kỹ thuật để đánh giá tác động tải của EUT (thiết bị thử nghiệm) lên mức điện trường tối đa trong một phòng cộng hưởng. Ảnh hưởng của EUT được nghiên cứu với các độ dẫn điện khác nhau. Từ các kết quả, có thể thấy rằng EUT có thể gây tải mạnh lên phòng cộng hưởng kh...... hiện toàn bộ
#Phòng cộng hưởng #Phương pháp lấy mẫu #Mạch RLC #Kiểm tra miễn nhiễm #Độ dẫn điện #Tần số #Tương thích điện từ #Mô phỏng mạch #Phát điện #Đo lường anten
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