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To simulate the electromagnetic emission of an electronic system, also the behavior of the measurement instrument, an Electromagnetic Interference (EMI) receiver, needs to be emulated. This requires not only computation capability, but also the processing time is proportional to the length of the time domain input signal. As an alternative, this work investigates the usability of a convolution in...
This paper deals with the immunity study of a 12-bits SAR (Successive Approximation Register) Analog-to-Digital converter from Analog Devices facing to an EM (ElectroMagnetic) disturbance. The RF (Radio Frequency) disturbances are injected through the Vdd pin of the studied component and its behavior is modeled. Due to the dispersion of conversion results, the approach proposed here is based on a...
The antenna tilting has not been specifically mentioned in the EMC product standards which include radiated emission test. However, CISPR 16-4-2 standard, which is the reference for the measurement uncertainty calculations of the radiated emission test in these standards, shows that directivity difference parameter changes according to using antenna tilt feature. The reproducibility of the tests gets...
As new technologies keep evolving towards the More Electric Aircraft concept in the aeronautics industry, the use of power electronics devices is increasing exponentially in accordance with the increasing demand of electric power on board. In order to reduce weight and volume of power converters, their frequency of operation is continuously increasing. As a result, electromagnetic compatibility problems...
In high voltage transmission lines, shield wires are periodically grounded and can be periodically sectionalized for several purposes. These two practices have important effects on multiconductor transmission lines, since both affect the wave propagation along the line. In this work, the attention is focused on the frequency behavior of the characteristic impedance. Moreover, the effect of wires transposition...
Results of discrete nonlinear behavior simulation of aircraft wireless systems' operation in complicated electromagnetic environment (EME) created by electromagnetic radiations of wireless systems allocated on the earth's surface and in different surrounding airborne vehicles are presented. The simulation is performed with the use of technique of virtual testing area; this technique is based on implementation...
Nowadays, the inverter technology is widely used in household appliances. This technology may generate disturbance in the frequency range within 9–150 kHz due to its frequency switching. In the shared low voltage network, many appliances can be connected and operated simultaneously causing the interaction between appliances. The disturbance produced by appliance may influence the working performance...
A novel circuit model for short transmission lines is derived by a straightforward reduction of a broadband modal network considering only the static mode and acceleration inductances. The presented network is compared to conventional equivalent circuit models in time- and frequency domain. It is found that the novel network provides a better performance in almost all cases, although the network's...
Test method and simulation method are applied to determine an optimum lightning protection design of aircraft radome. Proposed the lightning channel coefficient K and corresponding method to analyze the protection performance of diverter strips, the lightning channel coefficient K is based on the simulation of space electric field distribution and surface potential distribution of radome in lightning...
In embedded and on-board electronics context, environmental temperature has an influence on the real electromagnetic compliance and EMC figures. We present studies and results of temperature impacts on susceptibility and immunity figures. Specific dual thermal-electromagnetic set-up have been developed for this. A campaign of EMC-Thermal-parametric measurements has been realized on PWM patterns of...
This paper describes a new methodology of construction of the internal activity block of an ICEM-CE model of an FPGA based on a predictive approach using the estimation tools of the dynamic power and the static timing proposed by the manufacturer of the integrated circuit.
This paper discusses the limitations of power line communication (PLC) in vehicles, regarding system loads, transceiver coupling circuits and cable topology. Firstly, ECU input impedances were analyzed to obtain typical termination load conditions in modern vehicle power supply systems. Coupling circuits and cable harness topologies for the power distribution network were proposed, as well. Then,...
Near-field scanning is an established technique for the efficient and accurate measurement of the radiated emissions from electronic equipment for EMC studies. Recently the use of two probes near-field has been developed for the measurement of field correlation for electronic equipment with many uncorrelated sources that essentially have a stochastic field distribution. The use of two probe scanning...
Modern programmable electronic devices are becoming more and more susceptible to Electromagnetic Interference, meanwhile relying heavily on communication networks. In those networks, Cyclic Redundancy Checks (CRCs) are widely used to validate the correctness of transmitted data. However, this paper shows that, at specific bit and disturbance frequencies, CRC can generate false positives. A formula...
This paper presents a novel approach for the optimal design of RC snubbers, valid for very high frequencies from 30 MHz to 300 MHz. The integration of monolithic RC snubbers poses new design challenges, which are not covered by conventional design approaches. Our method avoids commonly made simplifications and therefore overcomes these challenges. A half-bridge circuit is used in the experiments to...
The common mode (CM) signal appears equally on both lines of a 2-wire cable not connected to ground. It is expressed mathematically as the average of the two signal voltages with respect to ground. In this paper, two different methods to inject CM signals are presented. The first meets with the mathematical expression of CM whereas the second follow the setup of a bulk current injection (BCI) test...
Electromagnetic interference can cause severe degradation of the performance of wireless communication systems. In order to predict or handle the performance degradation, methods for calculating the impact of the interference is needed. However, for a communication system that is subjected to several impulsive interference sources, the performance is hard to calculate exactly. In addition, using standard...
This paper studies the impact of the accelerated thermal aging on the conducted emission produced by a synchronous buck converter. The most degraded devices mounted on the DC-DC converter are identified and modeled in order to simulate the evolution of conducted emission and anticipate risks of non-compliance to emission requirements.
Liquid crystal polymer (LCP) substrates are used to design 3D conformal antenna elements in laser direct structuring technology (LDS) for MIMO and phased-array applications. Perspectives for energy-oriented built-in-self-test (BIST) compensation solutions are drawn for multiphysics electromagnetic-thermal-mechanical co-design of chip-package-PCB systems undergoing stochastic changes in their integration...
Open Area Test Sites (OATS) serve as reference for antenna calibration and many types of electromagnetic compatibility tests, since they provide more accurate results than other testing environments. However, the high level of accuracy demanded by the standard CISPR 16-1-5 can only be guaranteed if certain parameters are well arranged. Moreover, the feasibility of sufficiently accurate measurement...
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