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Proceedings of International Symposium on Electromagnetic Compatibility

14-18 Aug. 1995

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  • Proceedings of International Symposium on Electromagnetic Compatibility

    Publication Year: 1995
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    Freely Available from IEEE
  • A free-space reflectometer for surface impedance measurement of materials in the Ku-band

    Publication Year: 1995, Page(s):62 - 67
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    This paper presents a free-space reflectometer that has been developed to measure surface impedance of planar materials in the Ku-band (12.5 to 18 GHz). The set-up uses a microwave lens made of metal plates to create an equiphase wavefront arriving at normal incidence on the sample surface. Thus, the TEM wave assumption can be made to extract the impedance of the sample, which is not the case for ... View full abstract»

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  • Author index

    Publication Year: 1995
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    Freely Available from IEEE
  • Title index

    Publication Year: 1995
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    Freely Available from IEEE
  • Absorption analysis of a strip grating placed absorber by the method of moments

    Publication Year: 1995, Page(s):214 - 216
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    The method of moments is applied for the calculation of reflection from specially designed microwave absorbers which are different from conventional ones based on transmission line theory, and non-reflection conditions are sought. The absorber has periodical arrays of conductive strips on a lossy material with metal lining on the back surface and is found to be a new frequency-tuned absorber. It f... View full abstract»

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  • A study of the repeatability of conducted RF emissions

    Publication Year: 1995, Page(s):323 - 326
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    Automotive testing requires a series of validation measurements, usually spreading over a significant time frame. An initial series of measurements during product development will be repeated months later during product validation. It is essential that the levels measured at these two different times correlate with each other. If they do not, it can be an indication that something in the process, ... View full abstract»

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  • A modular formulation for electromagnetic transmission through shields of arbitrary shape using the method of moments

    Publication Year: 1995, Page(s):208 - 213
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    This paper presents a novel approach for analyzing the shielding problem of completely-closed and aperture-perforated, non-perfectly conductive enclosures. By means of the method of moments applied in the frequency domain a technique will be formulated which leads to a decoupled problem and therefore reduces the number of unknowns in the linear equation system. The simulation is performed for a si... View full abstract»

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  • Semi anechoic chamber homogeneity according to IEC 1000-4-3

    Publication Year: 1995, Page(s):320 - 322
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    This paper presents the results of the measurements of the field homogeneity according to the electromagnetic compatibility (EMC) standard IEC 1000-4-3 in a semianechoic shielded room with different kinds of absorbers on the floor. Comparison is made between four configurations on the floor: ground plane, pyramid foam filled with carbon (0.6 m long), ferrite panels, ferrite panels and pyramid foam... View full abstract»

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  • Stochastic prediction of wire coupling interference

    Publication Year: 1995, Page(s):51 - 56
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    Many EMC analyses of complex systems frequently result in a statement that insufficient knowledge is available to describe accurately the internal relationships of the system's components. This lack of information precludes any rigorous deterministic prediction and, in principle, requires that we express the uncertainties within the model. This paper shows the practical feasibility of stochastic p... View full abstract»

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  • A new technique for optimizing mode-stirred chamber efficiency

    Publication Year: 1995, Page(s):374 - 377
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    Mode-stirred chambers are widely employed throughout industry for performing electromagnetic susceptibility tests on a wide variety of electronic circuits and systems. The interior of this class of shielded electromagnetic chamber possesses a mechanically rotated metallic stirrer which is employed to perturb the internal field patterns. As the stirrer is rotated, this causes variation in the input... View full abstract»

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  • EMC requirements for radiocommunication transmission apparatus

    Publication Year: 1995, Page(s):204 - 207
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    This paper describes the until now under publicised Type Examination route to compliance with the European EMC Directive. The procedures of the route are explained along with an overview of the ETSI standards for EMC in radio equipment. Some of the potential problem areas associated with testing such apparatus are discussed along with some proposed solutions in particular, for radiated immunity te... View full abstract»

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  • Ground currents tests in metal planes

    Publication Year: 1995, Page(s):318 - 319
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    Metal planes, including larger copper strip areas of printed boards, are considered to be very effective grounds. These grounds are often treated as almost equipotential, and the ground currents are assumed to be concentrated on narrow paths connecting input and output terminals of the grounding plane of the sheet of metal. The paper addresses the ground plane current distributions and shows the w... View full abstract»

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  • Simulation of response of modeled EMI filters to measured or simulated time domain waveforms

    Publication Year: 1995, Page(s):272 - 275
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    This paper demonstrates a procedure for simulating the response of a modeled EMI filter to the conducted emissions of a system using measured or simulated time domain waveforms. The approach presented here deviates from the usual method of analyzing conducted emissions, in that the analysis starts in the time domain rather than in the frequency domain, as would be obtained through spectrum analyze... View full abstract»

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  • Transient analysis of nonlinearly loaded arrangements consisting of thin wires and metallic patches

    Publication Year: 1995, Page(s):636 - 641
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    A combined frequency and time domain procedure for the simulation of arbitrary nonlinearly loaded arrangements consisting of metallic patches and thin wires is presented. The time-invariant, linear part of the structure is analysed by means of the method of moments in the frequency domain while the characteristics of the nonlinear, time-variant elements are included via a convolution integral of V... View full abstract»

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  • Investigation of an impedance based GTEM calibration factor

    Publication Year: 1995, Page(s):551 - 556
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (788 KB)

    Presents an investigation into a GTEM calibration factor based on the impedance measured at the cell port. The work begins with the comparison of radiated emissions measurements taken from GTEMs of two different sizes. A radiating source, which radiated on a 5 MHz line spacing, was used for this comparison. The resulting comparison led to the measurement of the impedance, both real and imaginary, ... View full abstract»

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  • Using statistics to reduce the uncertainty in system level susceptibility testing

    Publication Year: 1995, Page(s):47 - 50
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Products containing electronics must generally be tested for electromagnetic susceptibility, as part of their EMC certification process, at the end of their development cycle to ensure that the test is representative of any future use of the product. However, the earlier that the product as a whole, or the electronic systems that might form part of the product, can be tested for susceptibility, th... View full abstract»

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  • An automatic radio interference monitor for the National Radio Astronomy Observatory Very Large Array

    Publication Year: 1995, Page(s):411 - 416
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The National Radio Astronomy Observatory (NRAO) operates the Very Large Array (VLA) Radio Observatory on the Plains of San Augustin in New Mexico, and the Very Long Baseline Array (VLBA) with 10 antenna locations from Hawaii to St. Croix. Harmful radio frequency interference (RFI) is a growing problem for the VLA and the VLBA, and for that matter, all Earth-based radio astronomy. The paper describ... View full abstract»

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  • Computer application of the EMC course at the University of Rome “La Sapienza”

    Publication Year: 1995, Page(s):29 - 34
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Since 1990 an EMC course has been established for the degree on electrical engineering at the University of Rome “La Sapienza”. The EMC course is held during the fifth year and includes about 72 hours of lectures and 48 hours of computer applications and experimental test work. An overview of the computer applications developed during the EMC course at the University of Rome “La ... View full abstract»

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  • On the equivalence of radiated and injected tests

    Publication Year: 1995, Page(s):77 - 80
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    In a previous paper (Perini, 1993) the conditions under which radiated and injected tests were derived was put on solid theoretical grounds. In a subsequent paper (Perini et al., 1995) the previous results were validated, with the aid of numerical simulation, for the case of plane wave illumination. In this paper, the same numerical simulation is used to validate the results for illumination by a ... View full abstract»

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  • Mode-stirred chamber shielding effectiveness testing of a multiconductor cable assembly

    Publication Year: 1995, Page(s):396 - 400
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB)

    This paper discusses a method of performing shielding effectiveness testing of a multiconductor cable assembly, i.e., a multiconductor cable and its associated connectors, in a mode-stirred chamber (MSC). The approach, a variation of the “nested” chamber technique, uses two conductive test fixtures each of which is connected to an end of the cable under test. The use of this method to ... View full abstract»

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  • Reflectivity level of RF shielded anechoic chamber

    Publication Year: 1995, Page(s):578 - 583
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    The reflectivity level of an RF shielded rectangular chamber with a non-uniform absorber lining has been investigated using the geometrical optics approach. The excitation antennas considered are the Hertzian dipole, a halfwave dipole and a pyramidal horn. A simple model is employed for the reflectivity of the absorber lining for normal incidence View full abstract»

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  • Power and energy in small biconical transmitting antennas

    Publication Year: 1995, Page(s):114 - 118
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    We have obtained a general numerical solution for power and energy in small biconical antennas. The unique shape of biconical radiators makes possible an exact radiation solution; the solution includes the full infinite set of modes and adds to the general knowledge of radiative processes in antennas large or small. Although for this case the power and energy equations are electromagnetically comp... View full abstract»

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  • A hybrid method for efficiently estimating common-mode radiation from transmission-line structures

    Publication Year: 1995, Page(s):145 - 149
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    This paper describes a computationally efficient means of predicting the radiated emissions from transmission-line structures with high aspect ratios. Common-mode currents are generally the principal source of radiated emissions from these structures but cannot be calculated by conventional circuit analysis techniques. Present full-wave numerical analysis methods consume too much computation time ... View full abstract»

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  • Data evaluation of a linear system by a second-order transfer function

    Publication Year: 1995, Page(s):511 - 515
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    A technique for predicting the response of a linear system to an electromagnetic pulse, based only on the measured continuous-wave magnitude, is applied to a particular system as a case study. The measured magnitude representing the system's transfer function is deduced first from the measured response to a known CW source. We next we derive an analytic expression for the magnitude square of the t... View full abstract»

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  • The mode stirred chamber-a cost effective EMC testing alternative

    Publication Year: 1995, Page(s):368 - 373
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    One of the key elemental factors related to product EMC compliance testing is cost. As the European norms advance toward completion and implementation, the need to address both emissions as well as susceptibility testing as part of the product development cycle becomes a factor which can not be ignored. One solution hereby proposed is the mode stirred, or mode tuned, chamber method of testing whic... View full abstract»

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