IEEE Transactions on Electromagnetic Compatibility

Issue 1 • Feb. 1991

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Displaying Results 1 - 15 of 15
  • Comments on "Riemann-Green function solution of transient electromagnetic plane waves in lossy media

    Publication Year: 1991, Page(s):72 - 73
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (167 KB)

    In commenting on the above-named work by O.R. Asfar (see ibid., vol.EMC-32, no.3, p.228-31, Aug. 1990), the commenter notes that one can write infinitely many solutions for the associated magnetic field strength that will all satisfy Maxwell's equations, but Maxwell's equations cannot tell which one of these infinitely many solutions is the right one. It is further pointed out that the physical si... View full abstract»

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  • A measure of coupling efficiency for antenna penetrations

    Publication Year: 1991, Page(s):1 - 9
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    The electromagnetic penetration into a shielded enclosure through an antenna connected to a receiver inside the shield is discussed. Reciprocity is used to relate the far-zone fields to the short circuit current in the transmission line. Using a Norton equivalent circuit, a measure of coupling efficiency is derived, relating the electric field incident on the antenna to the current incident on the... View full abstract»

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  • The transient electromagnetic field of an electric line source above a plane conducting earth

    Publication Year: 1991, Page(s):19 - 24
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The pulsed electromagnetic radiation from an electric line source above a conducting earth is investigated theoretically. The modified Cagniard method is used to derive closed-form expressions for the electric and magnetic field anywhere above the conducting earth. Numerical results are presented for the electric field for different points of excitation and observation above the earth, as well as ... View full abstract»

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  • New macromodels and measurements for the analysis of EMI effects in 741 op-amp circuits

    Publication Year: 1991, Page(s):25 - 34
    Cited by:  Papers (26)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    Presents the design of two macromodels for the 741 op-amp that prove trustworthy in simulating the consequences of high-frequency, large-amplitude sinusoidal voltages that represent EMI (electromagnetic interference) effects and are applied to the input of inverting and noninverting amplifiers. One of the macromodels accounts for power supply voltage change, reproduces correct voltage waveforms at... View full abstract»

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  • Calculation of electric fields due to lines of charge

    Publication Year: 1991, Page(s):67 - 68
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    The amplitude of the electric field due to a straight line segment of uniform electric charges is shown to be given by E=2q (4πDε0)-1 sen (α/2) where q is the linear charge density, α is the viewing angle (from the observation point to the filament extremities), and D is the distance to the filament; furthermore... View full abstract»

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  • On the use of a conical cornucopia antenna to reduce EMI

    Publication Year: 1991, Page(s):63 - 65
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The wide-angle radiation form a prime-fed parabolic reflector antenna and the associated EMI (electromagnetic interference) it produces can be greatly reduced by constructing the antenna in the form of an absorber-lined conical cornucopia (CC). Measured RPEs (radiation pattern envelopes) are inspected for the case where all antennas have about a 10-ft diameter and 43-dBi gain at 6 GHz and typify t... View full abstract»

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  • Fields radiated by electrostatic discharges

    Publication Year: 1991, Page(s):10 - 18
    Cited by:  Papers (103)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    Electrostatic discharge (ESD) fields are examined both analytically and experimentally. Measurements indicate that the electric fields can be quite significant (⩾150 V/m at a distance at 1.5 m, for example) for short periods of time (a few nanoseconds), particularly for relatively low-voltage events (⩽6 kV). A relatively simple dipole model for an ESD spark is developed and used to predict... View full abstract»

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  • Parabolic-array beam forming for nonsinusoidal waves

    Publication Year: 1991, Page(s):35 - 41
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    A beamforming method for nonsinusoidal waves using parabolic arrays is described. Antenna patterns for rectangular and sinusoidal pulses are given. Patterns for radiated signals with arbitrary time variations are shown to be derivable through function approximation by sums of linear ramp functions. In addition, the related far-field transient of signals that are zero for t<0 and have a... View full abstract»

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  • Letter to the editor [Use of periodic functions for equipment design]

    Publication Year: 1991
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    It is pointed out that there has long been unease about using a periodic function, such as a sinusoid, as an input to determine the response of a network or of a structure excited by an electromagnetic field. It has been argued that periodic functions have infinite energy and violate causality because there is no way that one cycle of a periodic function differs from any other. An argument that sh... View full abstract»

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  • On the analytical equivalence of electromagnetic fields solutions from a known source distribution

    Publication Year: 1991, Page(s):69 - 71
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    An analytical proof of the equivalence of solutions from monopole and dipole techniques is presented for electric and magnetic fields by a simple lightning model. The proof is in the context of the lightning problem as stated by M. Rubinstein and M.A. Uman (1989). The expressions for the electric and magnetic fields are simplified considerably View full abstract»

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  • Tutorial note on the general transmission line theory for a thin wire above the ground

    Publication Year: 1991, Page(s):65 - 67
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Transmission along an overhead wire or cable conductor is considered. It is shown that the rigorous solution of the problem can be put in the context of classical transmission line theory that has been used by power engineers for many years. However, the effective line parameters are spatially dispersive in the sense that they depend on the actual propagation constant of the mode in question View full abstract»

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  • Range-velocity resolution function of nonsinusoidal radar signals with Gaussian time variations

    Publication Year: 1991, Page(s):42 - 50
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    Signal design for carrier-free radars calls for the calculation of a range-velocity resolution function of nonsinusoidal signals consisting of a number of pulses with Gaussian time variations; this is a generalization of P.M. Woodward's (1953) ambiguity function that includes signals that do not have a sinusoidal carrier. Doppler processing of nonsinusoidal signals is investigated in terms of the ... View full abstract»

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  • Resolution function of nonsinusoidal radar signals. II. Range-velocity resolution with pulse compression techniques

    Publication Year: 1991, Page(s):51 - 58
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    For pt.I see ibid., vol.32, no.2, p.153-60 (May 1990). The thumbtack range-velocity resolution function of nonsinusoidal radar signals has been realised with signals having a large number of characters with triangular correlation functions. In reality, a radar signal rarely consists of one pulse; rather, it consists of thousands of pulses structured by various coding techniques. Pulse compression ... View full abstract»

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  • Receive and transmit mode aperture field of the parallel plate-fed slot antenna

    Publication Year: 1991, Page(s):59 - 61
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    Two numerical solutions are given for an integrodifferential equation governing the electric field in the aperture of a parallel-plate waveguide-loaded slot antenna excited by an obliquely incident plane wave. Resultant aperture field distributions obtained via Galerkin's method with a basis of edge-condition weighted Chebyshev-polynomials are compared with the results from pulse expansion with po... View full abstract»

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  • Electromagnetic missile launched from a uniform current sheet of arbitrary shape

    Publication Year: 1991, Page(s):61 - 63
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    A time-domain method, referred to as the variable transformation method, is used to study the transient radiation field from a uniform current sheet of any shape. A uniform current sheet of arbitrary shape is found to be capable of launching an electromagnetic missile (EMM) over the area equal to that of the sheet. The authors first derive the time-domain expression of the transverse electric and ... View full abstract»

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Aims & Scope

IEEE Transactions on Electromagnetic Compatibility publishes original and significant contributions related to all disciplines of electromagnetic compatibility (EMC) and relevant methods to predict, assess and prevent electromagnetic interference (EMI) and increase device/product immunity.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Prof. Ing. Antonio Orlandi 
University of L'Aquila
Email: antonio.orlandi@univaq.it