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In this paper, we successfully demonstrated a software application on the android platform of mobile phone which allows users to have a quick insight of radiated emission generated based on the image of a printed circuit board (PCB) by using analytical method and image processing. For benchmarking the application, a study on the radiated emission of PCBs with the use of electromagnetic compatibility...
This paper presents the main results of a thesis work dedicated to the Specific Absorption Rate (SAR) risks in High-Frequency (HF), Very High-Frequency (VHF) and Ultra High-Frequency (UHF) frequency bands. The main goal of this thesis is to enhance SAR method validation of radio military exposure near high power antennas. It will permit to reduce cost and delay of SAR validation and quantify the actual...
For electromagnetic interaction analysis in power electronics, the study and the design of Near-Field integrated magnetic antennas are presented. An antenna model is developed and compared to experimental data. The modeling and the performances of the prototype is discussed in function of the source position and the antenna design.
In paper an approach for the investigation of the emission of electromagnetic interference from coupling path avionics UAV is discussed. In work the unmanned aerial vehicle which made of composite material is discussed. A practical example study emission of electromagnetic disturbances from the coupling path of supply mains and of interfaces of control system is discussed.
The EU Directive 2013/35/EU requires that companies carry out a risk assessment for workers exposure to Electromagnetic fields (EMF). This paper describes how low frequency magnetic fields can be assessed against the directive. The exposure limit values are expressed as the induced electric field strength in the human body. The induced electric field cannot be measured, only calculated in computer...
A metallic enclosure is used to provide effective radio frequency (RF) shielding for electronic circuits. However presence of apertures and wire penetrations in the enclosure degrades the Shielding effectiveness. The study of external electromagnetic coupling vi a wire penetration to elements inside a shielding enclosure have been performed in this paper. Two cases of coupling to a wire segment and...
Capacitive coupling occurs between conductors, circuits located at different potentials, and among them there are ways of closing the currents produced by the potential difference. The purpose of this paper is to emphasize the capacitive coupling that appears between three PCB's and to present different methods of reducing capacitive coupling. It was studied the case when three PCBs are placed in...
Shielding effectiveness measurements are important for investigating enclosures with respect to electromagnetic compatibility (EMC) considerations. Especially measurements in small enclosures (like boxes for motor control units) are often difficult due to the little space for the receiving antenna. This paper shows measurements done with a small electro-optical E-field sensor which shows good accuracy...
In EUROCAE ED-130 two test procedures for radiated field EMC tests are pointed out. These procedures differ in the distance of the field transmitting antenna to the equipment under test (EUT). To cover the use of portable electronic devices (PED) next to the tested system, immunity tests are preformed in the near and far field region of the transmitting antenna. In this paper these tests are realized...
Two-port TEM cells with rectangular cross-section are commonly used to produce plane electromagnetic waves with high electric field. The non-uniformity of the system makes the use of numerical methods extremely useful in the design phase in order to achieve a very good behavior of the TEM cell over a wide frequency range of operation. In this paper an extended version of PEEC is used to study a real...
Electromagnetic compatibility (EMC) analysis of high-speed circuits is becoming mandatory due to the rapid increase in operating frequencies, RF interference and layout densities. Radiated susceptibility tests are important part of overall EMC analysis. In this paper the focus of investigation is on models of the coupling between a transverse electromagnetic (TEM) field generated by the TEM cell and...
In this paper a generic susceptibility model of a personal computer (PC) was derived using generic coupling characteristics. Coupling of interference through cables, enclosure, apertures, and directly to a circuit board were considered. Using experimental upset data for digital semiconductor components electric field intensities were calculated for an unshielded PC board and a typical PC. The obtained...
This paper proposes a theoretical model of high frequency coupling on cables running in an electrically large enclosure. This model is basically derived from the transmission line theory in which a statistical representation of the incident electromagnetic environment is added. Numerical examples put to the fore the contribution of each electrical and geometrical characteristic on the cable response...
In this presentation, new EMC test procedures employing hybrid TEM cells, high-impedance voltage and low-impedance current measurements, and true radiated emissions measurements will quantify the important parameters of interest providing component-level information that can be used to predict system-level performance.
Electromagnetic compatibility (EMC) of aircraft is a process of proving the capability of aircraft to operate satisfactorily in Electro Magnetic Interference environment. It is an involved process wherein considerable efforts towards design and test are required at various hierarchical levels. Effective EMI control on aircraft is possible and can be realized only if EMC exists at firstly the individual...
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