Electromagnetic coupling through small apertures. by Noel Alexander McDonald

Cover of: Electromagnetic coupling through small apertures. | Noel Alexander McDonald

Published in [Toronto] .

Written in English

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Subjects:

  • Electromagnetic theory,
  • Wave guides

Edition Notes

Book details

ContributionsToronto, Ont. University.
The Physical Object
Pagination161 leaves.
Number of Pages161
ID Numbers
Open LibraryOL18880169M

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Abstract: The electromagnetic field coupling through small apertures illuminated by an arbitrary incident plane wave is discussed for general aperture shapes. A set of new integral equations in a form highly amenable to numerical solution techniques is derived.

Based on the application of the Rayleigh series method, an analytical solution is obtained for the first few terms of the expansion of Cited by: An admittance solution for electromagnetic coupling through a small aperture in a conducting screen is obtained by the method of moments.

This solution gives the equivalent magnetic current in the aperture as a linear combination of the three quasistatic magnetic currents responsible for the three dipole fields seen in the far by: 6. small aperture backed by a conducting body.

Davis and Sistamzadeh [] considered the problem of coupling to a multiconductor transmission line through aperture perforated screen and formulated an upper bound for the current and voltage at the line terminations in frequency and time domains.

Smha et al. [] considered the problem of ra-Cited by: 5. The electromagnetic field coupling through small apertures illuminated by an arbitrary incident plane wave is discussed for general aperture shapes.

A set of new integral equations in a form highly amenable to numerical solution techniques is derived. Based on the application of the Rayleigh series method, an analytical solution is obtained for the first few terms of the expansion of the Cited by:   Y. Leviatan, R.F.

Harrington and J.R. Mautz, Electro- magnetic transmission through apertures in a cavity in a thick conductor, IEEE Trans. Antennas Propag. 30() [16] J.R. Mautz and R.F. Harrington, An admittance solution for electromagnetic coupling through a small aperture, AppI. Sci.

Res. 40 () Cited by: 7. Abstract: Electromagnetic field coupling between a digital platform and a radio-frequency antenna through an aperture represents one of the typical coupling paths responsible for radio-frequency interference (RFI) issues in mixed-signal systems.

Conventional approaches of modeling radiation through an aperture and evaluating the shielding effectiveness of a metallic enclosure with apertures. Smith's book is the seminal treatment of the subject of coupling of electromagnetic fields into transmission lines.

Equations are derived and presented for uniform and non-uniform fields, balanced lines, and unbalanced lines over a ground plane. The material is applicable to many real engineering problems commonly s: 3.

An electromagnetic topology based simulation code has been used to characterize interactions through a small aperture of a semi-shielded electrical system to external lightning. book chapter. Wilson P. F., “A Comparison Between Near-Field Shielding-Effectiveness Measurements Based on Coaxial Dipoles and on Electrically Small Apertures,” IEEE Transactions on Electromagnetic Compatibility, Vol No.

1, Februarypp. 23–28 CrossRef Google Scholar. This generalized n-series approach leads to Electromagnetic coupling through small apertures. book descriptions of the coupling of electromagnetic waves through apertures in canonical structures into open or enclosed regions.

In particular, it is applied to the canonical problem of plane wave coupling to an. Electromagnetic coupling through an arbitrarily-shaped small aperture in an infinite conducting plane to an infinitely-long wire is investigated.

The moment method is used to solve the integral equations numerically for the electric current on the wire and the equivalent magnetic current of the aperture.

In view of the key problems of the discharge phenomenon caused by the impact of small space debris on the satellite's charged surface and the electromagnetic field induced entering the interior of the satellite after coupling through the aperture.

In this paper, the characteristics of the coupling plasma, the plasma induced discharge and the. E-Field and Place-Wave Shielding of a Small Enclosure with No Seams.

Conductive Cloth Suit. Conductive Adhesives and Absorbers. Seams, Joints, Ventilation, and Other Apertures. E-Field Coupling through an Aperture in Thin Material. Aperture Coupling Measurements versus the Equations in Reference 9 and the FEKO : $ This paper is on investigations in the bid to realize intermediate level circuit models for coupling into the generic missile body through apertures.

A model for coupling via small apertures that. The coupling problem between two half spaces that are connected by a section of a circular waveguide with a small aperture on both ends is solved by using an equivalent network representation.

The conditions for aperture-cavity resonances and the maximum field in the waveguide are determined. It is shown that, for certain combinations of aperture sizes, the maximum field is quite sensitive to.

ELECTROMAGNETIC COUPLING ANALYSIS OF TRANSIENT SIGNAL THROUGH SLOTS OR APERTURES PERFORATED IN A SHIELDING METALLIC ENCLOSURE USING FDTD METHODOLOGY Y.

Wang and W. Koh DSO National Laboratories, Singapore 20 Science Park Drive, Singapore C. Lee and K. See Nanyang Technological University Nanyang. About Cookies, including instructions on how to turn off cookies if you wish to do so.

By continuing to browse this site you agree to us using cookies as described in. We use both electromagnetic topology (EMT) and the Baum-Liu-Tesche (BLT) equation to analyze a cavity model with an aperture. More precisely, we combine the aperture coupling theory and EMT to study the issues of the electromagnetic field penetration through apertures into a cavity and the coupling to a two-wire transmission line in it.

We employ the equivalence principle to establish the. to coupling from interior sources through slots and apertures at enclosure cavity modes.

A power-balance method, Bethe’s small-hole theory, and empirically developed formulas for the relation between radiation, and slot length and number of slots, were employed to estimate an upper bound on the radiated EMI from shielding enclosures.

IN 48, Y. Liu, Penetration of Electromagnetic Fields Through Small Apertures into Closed Shields, Mississippi State University. IN 49, M. Sancer and A. Varvatsis, Electromagnetic Penetrability of Perfectly Conducting Bodies Containing an Aperture.

Consider electromagnetic coupling through a small aperture in an infinitely thin perfectly conducting screen separating two regions. tIm-pressed sources in one or both regions cause electromagnetic power to flow through the aperture. The field due to the aperture is the actual field minus the short-circuit field.

The short-circuit field is the. E-Field and Place-Wave Shielding of a Small Enclosure with No Seams. Conductive Cloth Suit. Conductive Adhesives and Absorbers. Seams, Joints, Ventilation, and Other Apertures. E-Field Coupling through an Aperture in Thin Material.

Aperture Coupling Measurements versus the Equations in Reference 9 and the FEKO Program. form at the back of the book. These are also available as Electromagnetic coupling by a wire through a cavity-backed circular aperture in an infinite screen Wright, Diana Beth, M.S.

The University of Arizona, U MI N. Zeeb Rd. Ann Arbor, MI ELECTROMAGNETIC COUPLING BY A WIRE THROUGH A CAVITY-BACKED CIRCULAR APERTURE IN AN. The conventional way of analysing electromagnetic coupling into cavities is by means of full-wave solvers based on techniques such as the finite difference time domain method, the method of moments and the transmission line matrix (TLM) method.

However, these methods require considerable computing resources and time to reach a solution. Intermediate level circuit models (ILCMs) have been shown.

Electromagnetic Compatibility (EMC) This applies to the simultaneous operation of equipment on the aircraft and ensuring that one system does not interfere with another system Back Door Coupling – refers to coupling through wire bundles, apertures, power systems, etc.

Composite structure can increase these issues via shielding. - Buy Foundations for Microwave Engineering (IEEE Press Series on Electromagnetic Wave Theory) book online at best prices in India on Read Foundations for Microwave Engineering (IEEE Press Series on Electromagnetic Wave Theory) book reviews & author details and more at Free delivery on qualified s: 6.

Capacitive Coupling 45 Effect of Shield on Capacitive Coupling 48 Inductive Coupling 52 Mutual Inductance Calculations 54 Effect of Shield on Magnetic Coupling 56 Magnetic Coupling Between Shield and Inner Conductor 58 Magnetic Coupling—Open Wire to Shielded Conductor 61 Shielding to Prevent Magnetic.

We show that far-field electromagnetic coupling between a localized plasmon of a nonchiral nanostructure and a surrounding chiral molecular layer can induce plasmonic chirality much more effectively (by a factor of 10 3) than previously reported near-field phenomena.

We gain insight into the mechanism by comparing our experimental results to a. Electromagnetics and Applications Preface - ix. E-Field and Place-Wave Shielding of a Small Enclosure with No Seams. Conductive Cloth Suit. Conductive Adhesives and Absorbers. Seams, Joints, Ventilation, and Other Apertures.

E-Field Coupling through an Aperture in Thin Material. Aperture Coupling Measurements versus the Equations in Reference 9 and the FEKO Program. ELECTROMAGNETIC COUPLING ANALYSIS OF SIGNAL THROUGH APERTURE PERFORATED IN A LOADED SHIELDING ENCLOSURE USING HYBRID MoM/FEM Abstract — In this paper, we present an approach to determine the effect of the aperture size of a loaded enclosure with PCB(s) inside.

A hybrid formulation in frequency domain combining. Plane-wave spectrum point of view of diffraction and its equivalence to the Rayleigh-Sommerfeld diffraction theory both for scalar and vector fields, including Smythe diffraction integrals, apertures in conducting screens, Bethe-Bouwkamp theory of diffraction by small holes, and the Babinet principle for scalar and vector electromagnetic fields.

/ELECTROMAGNETIC TRANSMISSION THROUGH A RECTANGULAR APERTURE IN A PERFECTLY CONDUCTING PLANE -ious studies of aperture problems include those for small aper-tu,j, ;i, t-h'se for circular apertures [4, Some results for (61 A.

Adams, C. Varnado, D. Warren, "Aperture Coupling by Matrix Methods," IEEE FMC Symposium. Keywords: Aperture coupling, lightning electromagnetic pulse, shielding enclosure, two-step finite-difference time-domain method DOI: /JAE Journal: International Journal of Applied Electromagnetics and Mechanics, vol.

48, no. 4, pp.(). Electromagnetic Coupling Between Transmission Lines Through Apertures. IETE Journal of Research: Vol.

29, No. 2, pp. The aim of this book to provide an up-to-date description of the physical effects of mutual coupling for a variety of antennas and for techniques for analysing and assessing its effects. Practical aspects of mutual coupling will be presented as well as applications to show where the performance is impacted both positively and negatively by taking it into account.

Considered one of the major fields of photonics of the beginning 21st century, plasmonics offers the potential to confine and guide light below the diffraction limit and promises a new generation of highly miniaturized photonic devices.

Offering both a comprehensive introduction to the field and an extensive overview of the current state of the art, "Plasmonics: Fundamentals and Applications /5(3). Electromagnetic coupling through a small slot into a two-dimensional rectangular cavity is computed via a simple Ritz-Galerkin expansion of the aperture field for the case of transverse electric (TE) polarization.

One term expansions for each of the symmetric and antisymmetric dynamic aperture fields use the exact solutions for harmonic potentials that solve the related Neumann problem of a. In inductive coupling (electromagnetic induction or inductive power transfer, IPT), power is transferred between coils of wire by a magnetic field.

The transmitter and receiver coils together form a transformer (see diagram).An alternating current (AC) through the transmitter coil (L1) creates an oscillating magnetic field (B) by Ampere's magnetic field passes through the receiving.

After an introduction and an overview of available materials, it discusses figures of merit for shielding configurations, the shielding effectiveness of stratified media, numerical methods for shielding analyses, apertures in planar metal screens, enclosures, and cable shielding.

Electromagnetic scattering from apertures in an infinite conducting plane backed by a filled cavity is investigated. The boundary conditions are used to obtain a set of equations to solve for the m.Design of the extraordinary transmission through a small aperture.

Figure 1a shows the schematic diagram of a single small square aperture with a size of 3 × 3 × 1 mm 3 drilled at the center of a thin (t = 1 mm) copper plate. To realize ferromagnetic resonance coupling, two ferrite rods are placed symmetrically on both sides of the aperture, which is shown in Fig.

1b,c. Comparing the Coupling of External E- and H-Fields through Apertures in a Perfectly Conducting Plane. In this section, we summarize a paper [6] that isolates and compares the relative coupling levels for external E- and H-fields through an aperture in a .

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