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In this paper, a modeling method for predicting the conducted emission with a current probe method is presented for a motor-drive braking system. The proposed model considers the motor driving circuit components and the measurement environment. The models of motor driving circuit component include PWM inverter circuits, 3-phase motor, PCB, heatsink, bus bars, and motor casing. The models of measurement...
A new structure conducted disturbance measurement system is designed and prototyped in order to improve the impedance characteristic of the previously proposed measurement system. This new-type measurement system adopts a designed equipment under test (EuT) connection which is used to propagate conducted disturbance and connect the AC plug of the EUT and the measurement system. The EUT connection...
This paper presents the modeling and design of a source-buffered Miller operational amplifier structure that is highly immune to electromagnetic interference (EMI). The source-buffered Miller operational amplifier is designed and fabricated in the 0.18 μm mixed-mode CMOS process and modeled mathematically including the body effect and channel length modulation. Measurement results show that the maximum...
A system's phase center (PC) is an equivalent point behaving like an ideal, isotropic radiator from which spherical waves emanate. Ideally, the phase on a spherical surface in the far field of this point is constant. Determining the PC of an antenna system is a very challenging task important for many different applications like electromagnetic compatibility (EMC) testing, GPS or radar navigation...
It is well known that wideband electromagnetic noise is caused by ESD (electro-static discharge) events. Especially, the micro gap ESD of less than 1 kV produces the impulsive electromagnetic noise up to GHz bandwidth. The ESD noise is menace to cause malfunction of high-tech electrical equipment and systems. Then, the impulsive electromagnetic noise caused by the ESD was examined to clear the radiation...
Knowledge of the shielding effectiveness of an enclosure is important for the electromagnetic compatibility of electronic systems. The shielding effectiveness of an enclosure depends on the absorption cross section of its contents. It might be expected that the energy absorption in an electronic circuit changes according to the operating state of the semiconductor devices which compose the active...
Scattering objects like wind turbines or buildings have a significant influence on radar signal propagation. In order to predict the appropriate impact of construction or modification of a building a simulation of the scenario is often helpful. Using traditional full wave simulation methods this leads to an unacceptable high amount of simulation effort due to the geometrical very large structures...
The electromagnetic immunity of an operational amplifier in the non-inverting configuration is characterized using the direct power injection (DPI) standard. The amplifier is driven by the functional input signal and the radio-frequency (RF) disturbance signal that is injected into the output pin. The output reflection coefficient in the large-signal conditions is calculated from the time-domain simulations...
High switching frequencies(>1 MHz) become available due to the development of wide bandgap semiconductors. This trend of increasing operating frequency in power electronics results in the reduction of output filter sizes and costs. As frequency increases, parasitic behavior of components become more dominant. This paper shows the possibility to shift the generated EMI peaks to the most effective...
Numerical FDTD full-wave simulations are performed in order to evaluate the behavior of a chaotic reverberation chamber. Performances are evaluated in terms of uncorrelated frequencies and antenna positions by using a correlation-based multivariate approach. The chaotic cavity geometry is obtained by including spherical diffractors inside the chamber. It is demonstrated that wall deformations enhance...
The trend of integration is continuously increasing in order to reach higher power densities. One promising way is the monolithic integration of RC snubber circuits into power semiconductors. This work describes a new way of monolithic integration of an RC snubber in the power semiconductor to improve electromagnetic interference (EMI). The snubber circuit is built of additional trenches next to the...
This paper presents a theoretical model for the characterization of complex flexible printed interconnects. The main aim of this work is to extract, from the multi-layers complex structure subject to harsh environment (high intensity electromagnetic fields), an equivalent circuit model from 500 MHz to 8 GHz. The proposed methodology requires assessing the voltages induced at the end of the signal...
This paper presents an analytical method to determine the electric field inside an enclosure with an aperture from a thin wire as an efficient source outside the enclosure. In this regard, the wire is divided into multiple segments as discrete plane wave (far-field) sources. These sources radiate and excite the enclosure through the aperture which can be modeled by Robinson's formulation. Finally...
Many household appliances today are equipped with inverter technology which may generate disturbances in the frequency range within 9–150 kHz related to the frequency switching used. Since the regulations covering the disturbance in this frequency range are not applicable for all household appliances, the efforts to limit the disturbance produced by some household appliances are less. The voltage...
Electronic equipment designed to be installed onto aircraft must be certified in accordance with established EMC standards. This paper is focused on section 20 of RTCA-DO160 which refers to conducted susceptibility in aeronautics. Since equipment can succeed or not in qualification test, aim is to be able to predict these levels of disturbance for limiting costs and time design. Moreover, aircraft...
The risk of malfunction of cardiac implant due to the influence of external electromagnetic field has been highlighted by the 2013/35/EU European Directive, which classified implanted workers as workers at particular risk. We propose in this study a new method to test in vitro cardiac implants with an electric field of 50 Hz. The exposure system was designed using numerical simulations and does not...
The current probe described in CISPR 16-1-2 is a well-established tool for common-mode measurements on cables, but limited attention has been paid to the practicalities of making differential mode measurements as outlined in figure B.4b of the standard. This paper presents an analysis of the additional errors involved in the differential mode configuration, and shows that for good high frequency performance...
The algorithm of the electromagnetic environment estimation inside a cinema and concert hall control room, equipped by diverse (on power, sensitivity, frequency range and so forth) hardware, is proposed. The modeling program has been developed to simulate the indoor electromagnetic environment. The area of hardware control room is conventionally represented by two dimensional grids of cells for modeling...
Evaluating security vulnerabilities of software implementations at design step is of primary importance for applications developers, while it has received litte attention from scientific community. In this paper, we describe virtual prototyping of an implementation of scalar multiplication aiming to make it secure against simple side-channel attacks. Reproducing information leakage as close to reality...
The nature of the Power Line Communication (PLC) equipment is complex because it is considered as an information equipment for Electro-Magnetic Compatibility (EMC) standardization, but it is used to inject High-Frequency (HF) and Very High Frequency (VHF) frequency signals on the existing power network which is not designed to guide these frequencies. This PLC system issue leads to some difficulty...
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