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Wednesday, July 15, 2020 | History

2 edition of theory of mutual impedances and multiple reflections in an N-element array environment found in the catalog.

theory of mutual impedances and multiple reflections in an N-element array environment

Lorant A Muth

theory of mutual impedances and multiple reflections in an N-element array environment

by Lorant A Muth

  • 39 Want to read
  • 36 Currently reading

Published by National Bureau of Standards in Washington, D.C .
Written in English

    Subjects:
  • Antenna arrays,
  • Electromagnetic interactions,
  • Electromagnetic fields

  • Edition Notes

    StatementLorant A. Muth
    SeriesNBS technical note -- 1078
    ContributionsUnited States. National Bureau of Standards
    The Physical Object
    Paginationiii, 29 p. :
    Number of Pages29
    ID Numbers
    Open LibraryOL14847422M

    This book provides comprehensive coverage of the major gyrator circuits, simulated inductors and related synthetic impedances. It offers a thorough review of research in this field to date, and includes an exceptionally wide range and number of circuit examples, along with their relevant design equations, limitations, performance features   IEEE Transactions on Information Theory , () A smoothing method for sparse optimization over convex sets. Optimization Letters ,

    Первый в мире пиратский ресурс, который открыл массовый доступ к десяткам миллионов научных статей Научные статьи – публикации в специальных SSN , Carl E. Baum, Combining Multiple Prolate Spheroidal Reflectors as a Timed Array With a Common Near-Field Focus, November SSN , W. Scott Bigelow, Everett G. Farr, and Leland H. Bowen, Development of the Impulse Slot Antenna (ISA) and Related Designs, December

      Let N denote the number of diffraction orders within the propagation range (i.e. k∈[−k 0, k 0]). This number can be upperbounded, i.e. N≤2k 0 /k g. We have shown that, in order to tune arbitrarily the amplitudes and phases of each propagating diffraction order, one needs to discretize each period of the metasurface into at least N :// Enwenode Onajite, in Seismic Data Analysis Techniques in Hydrocarbon Exploration, Types of Deconvolution Spiking Deconvolution. In spiking deconvolution, it is assumed that the auto-correlation of the seismic trace is the same as the auto-correlation of the source wavelet, and that the reflectivity is random and its auto-correlation is a spike.. In other words, the desired output is


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Theory of mutual impedances and multiple reflections in an N-element array environment by Lorant A Muth Download PDF EPUB FB2

A Theory of Mutual Impedances and Multiple Reflections in an N-Element Array Environment. Published. February 1, Author(s) Lorant A. Muth. Citation. Technical Note (NIST TN) - Report Number. NIST Pub Series. Technical Note (NIST TN) Pub Type. NIST ://   NATIONALBUREAU OFSTANDARDS LIBRARY ATheoryofMutualImpedancesand (Xcioo MultipleReflectionsinanN-Element--uxici ArrayEnvironment no ElectromagneticFieldsDivision NationalEngineeringLaboratory NationalBureauofStandards mentofCommerce Boulder,Colorado e 4.

Get this from a library. A theory of mutual impedances and multiple reflections in an N-element array environment. [Lorant A Muth; United States. National Bureau of Standards.] A numerical technique for calculating mutual impedances and element patterns of antenna arrays based on the characteristics of an isolated element is :// The mutual coupling between antenna elements affects the antenna parameters like terminal impedances, reflection coefficients and hence the antenna array performance in terms of radiation characteristics, output signal-to-interference noise ratio (SINR), and radar cross section (RCS).

This coupling effect is also known to directly or indirectly influence the steady state and transient response The estimation of RCS of a phased array depends on various parameters, namely, array geometry, operational frequency, feed network, mutual coupling between the antenna elements and so ://   obtain the - uivalent EMP environment.

Experimentally measured input impedances •re compared with the results from claqsical antenna theory to d'itermine the effects of mutual coupling between elements in the array configurations. The aperture size of the array is shown to be an important   Electromagnetic Waves and Antennas Sophocles J.

Orfanidis ECE Department Rutgers University 94 Brett Road Piscataway, NJ Tel: ~orfanidi/ewa. Complex systems can be found anywhere multiple actors interact, are subject to feedback dynamics, and are influenced by time delays between cause and effect (Sterman; Groesser ).Section 2 details six systems approaches that can help to understand and manage complex systems.

These are soft system modelling (SSM), viable system model, mental models of dynamic systems, and group N s /N p = √(Z s /Z p) = √(/75) = √4 = 2 The highly efficient transformer essentially features a wide bandwidth.

With modern ferrite cores, this method is useful up to about several Previous sections illustrate that signal propagation on a transmission line with points of impedance discontinuity will result in multiple signal reflections, with one set of reflections at each point of impedance discontinuity.

Specifically, the example in Figure shows that in a system where the input impedance of the load 4 differs significantly from the characteristic impedance of the   What drives consumers to purchase or not purchase ethical products remains something of a puzzle for consumer behavior researchers.

Existing theory—particularly the widely applied theory of planned behavior (TPB)—cannot fully explain ethical purchase decisions. This article contends that not only is the original TPB limited in its applicability to ethical purchasing contexts but also A candidate array design can examine input impedances of all elements under any beam scan condition.

Phased array antennas can be optimized for performance at the element, subarray or complete array level based on element match (passive or driven) far-field and near-field pattern behavior over any scan condition of ://   Similar to the multiple reflections, multiple diffracted sound fields need to be computed in some cases, as for example sound propagation to areas shielded from road traffic as courtyards.

Including too few diffraction contributions (in combination with reflections) will underestimate sound pressure levels, e.g. see Refs. Prunty, A.C. and R.K.

Snieder, Theory of the linear sampling method for time-dependent fields, Inverse Problems, 35,(download pdf) Sens-Schoenfelder, C., R. Snieder, and X. Li, A model for nonlinear elasticity in rocks based on friction of ~rsnieder/   emphasis on mutual coupling theory, which is the basis of all array characteristics.

After 30 years, MSA is still in print, through Peninsula Publishing. It is the purpose of this book to present a thorough and extensive treatment of The fast progress in improving the sensitivity of the gravitational-wave detectors, we all have witnessed in the recent years, has propelled the scientific community to the point at which quantum behavior of such immense measurement devices as kilometer-long interferometers starts to matter.

The time when their sensitivity will be mainly limited by the quantum noise of light is around the A n and L n are the dispersion and length, respectively, of the nth CFBG. n g is the group index at the wavelength, λ, of the tunable laser, and λ c is the center wavelength of the CFBGs of fixed bandwidth, Δλ.

It is clear that each CFBG has a different dispersion, A n, defined in Eq. The multiple-input multiple-output (MIMO) performance of the modulated scattering antenna array (MSAA) is analyzed numerically for the first time in indoor environment based on an approach to The mutual coupling between antennas in an array is discussed.

The authors present a brief history of this problem, clarify a few definitions, and unify the various analysis techniques using a. In The Electrical Engineering Handbook, Babinet's Principle. One may view a slot antenna to be physically complementary to a strip dipole antenna consisting of a metal strip of the same.

shape and size as that of the slot. The complementary strip dipole is to be excited by a voltage gap, breaking across the strip at the same position where the slot antenna is ://Xu D and Shaikh N () A Heuristic Approach for Ranking Items Based on Inputs from Multiple Experts, International Journal of Information Systems and Social Change,(1 This increased inter-element spacing reduced mutual coupling without undersampling or producing grating lobes.

A diagram of the dipole element is shown in Figure 3. Additional details were given by Nagel et al. (). The dipoles were connected through the array ground plane to uncooled low-noise amplifiers (LNAs; Ciao Wireless, Inc.,