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IEEE Antennas and Propagation Magazine

Issue 2 • Date April 2007

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Displaying Results 1 - 25 of 51
  • Front cover - IEEE Antennas and Propagation Magazine - April 2007

    Publication Year: 2007, Page(s): 1
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  • Table of contents - Vol 49 No 2

    Publication Year: 2007, Page(s): 3
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  • Information for Contributors

    Publication Year: 2007, Page(s): 4
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  • Magazine Staff

    Publication Year: 2007, Page(s):5 - 6
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  • AP-S Officers and Administrative Committee

    Publication Year: 2007, Page(s): 7
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  • Our Feature Articles [Editor's Comments]

    Publication Year: 2007, Page(s):8 - 193
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  • President's Massage

    Publication Year: 2007, Page(s):9 - 10
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  • 2007 IEEE Antennas and Propagation Society - Membership Application

    Publication Year: 2007, Page(s): 11
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  • Wireless propagation in tunnels

    Publication Year: 2007, Page(s):11 - 26
    Cited by:  Papers (79)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9335 KB) | HTML iconHTML

    In this article, we give a presentation of wireless electromagnetic propagation in tunnels. We discuss in depth the characteristics of multimodal propagation. We show analytical models whereby we are able to study electromagnetic fields in tunnels. To complement the analysis, we give an account of experiments performed in the Channel Tunnel between France and England, and the Massif Central in sou... View full abstract»

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  • Room electromagnetics

    Publication Year: 2007, Page(s):27 - 33
    Cited by:  Papers (51)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4601 KB) | HTML iconHTML

    In analogy with the established discipline of room acoustics, various aspects of diffuse wideband microwave propagation in a room are treated. It is shown that an equivalent to Sabine's equation for reverberation time in a room is valid for the completely diffused field, depending only on the volume, the surface area, and an effective absorption coefficient. An exponential decay of the power as a ... View full abstract»

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  • Enabling RF/microwave devices using negative-refractive-index transmission-line (NRI-TL) metamaterials

    Publication Year: 2007, Page(s):34 - 51
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (12282 KB) | HTML iconHTML

    Metamaterials are artificially engineered structures with unusual electromagnetic properties. In this article, we review the implementation of isotropic metamaterials that exhibit a negative permittivity and a negative permeability, thus leading to a negative index of refraction. Specifically, the article focuses on transmission-line metamaterials, which are planar structures comprising a network ... View full abstract»

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  • Propagation-prediction and site-planning software for wireless communication systems

    Publication Year: 2007, Page(s):52 - 60
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6317 KB) | HTML iconHTML

    Propagation-prediction and site-planning software for wireless communication networks has been developed. The software has a user-friendly graphical user interface (GUI), and provides calculations for large-scale and small-scale propagation parameters, including path loss (or received power) and delay profiles. Angles of arrival/departure, which are useful for the design of wireless systems employ... View full abstract»

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  • Some scattering results computed by surface-integral-equation and hybrid finite-element - boundary-integral techniques, accelerated by the multilevel fast multipole method

    Publication Year: 2007, Page(s):61 - 69
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5863 KB) | HTML iconHTML

    Method-of-moments (MoM) solutions of surface integral equations are especially well suited for scattering computations involving metallic objects. Improved modeling flexibility for dielectric (possibly lossy) and mixed dielectric/metallic bodies is obtained by combining a surface-integral-equation formulation, involving electric and magnetic equivalent surface-current densities, with a volumetric ... View full abstract»

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  • Linear array synthesis using an ant-colony-optimization-based algorithm

    Publication Year: 2007, Page(s):70 - 79
    Cited by:  Papers (46)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5995 KB) | HTML iconHTML

    The aim of this work is to show the use of a well-known type of evolutionary computational optimization technique, ant colony optimization (ACO), in a typical electromagnetic problem: linear array synthesis. To this aim, an algorithm based on the fundamentals of ant colony optimization has been developed. The algorithm uses real numbers. Some examples using different optimization criteria are pres... View full abstract»

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  • Correction to "The electrically small multi-turn loop antenna with a spheroidal core" [Oct 06 54-66]

    Publication Year: 2007, Page(s):80 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1131 KB) | HTML iconHTML

    In the above titled paper (ibid., vol. 48, no. 5, Oct 06), the authors used an approximation for the core loss resistance that was later found to be invalid for the magnetic-field distribution involved. After a brief outline if the problem, the correct loss resistance is derived and its impact discussed. View full abstract»

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  • Correction in the contribution to the AMTA Corner, "Theory and measurement of backscattering from RFID tags" [Dec 06 212-218]

    Publication Year: 2007, Page(s): 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (662 KB)

    In the above titled paper (ibid., vol. 48, no. 6, pp. 212-218), Figure 11 was printed incorrectly. The correct figure, which illustrates the differences between tag antennas with various impedance loads, is presented here. View full abstract»

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  • Chapter News

    Publication Year: 2007, Page(s):82 - 85
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  • AP-S Distinguished Lecturer Program for 2005-2006

    Publication Year: 2007, Page(s): 86
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  • In Memoriam: Donald G. Dudley, Jr.

    Publication Year: 2007, Page(s): 87
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  • Call for Papers - IEEE International Workshop on Antenna Technology 2008: Small Antennas and Novel Metamaterials

    Publication Year: 2007, Page(s): 88
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  • Design, optimization, and validation of a planar nine-element Quasi-Yagi antenna array for X-band applications [Antenna designer's Notebook]

    Publication Year: 2007, Page(s):89 - 96
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4743 KB) | HTML iconHTML

    A planar antenna array, based on nine identical quasi-Yagi elements, is presented in this paper. Contrary to conventional designs, the feeding network is composed of three-way power dividers, which are carefully designed in order to provide synchronized output signals over a wide frequency range. The use of spline-shaped microstrip lines suppresses coupling effects by parallel lines. Thus, signal ... View full abstract»

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  • Measurement of electrically large array antennas in small anechoic chambers [Measurements Corner]

    Publication Year: 2007, Page(s):100 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4596 KB) | HTML iconHTML

    A post-processing procedure that yields accurate array-antenna radiation-pattern estimations is described. By resorting to this strategy, measurements of large array antennas inside small anechoic chambers become feasible. The method employs an adequate phase-correction derived from an optical ray approach, under the assumption that the elementary radiators themselves are electrically small and ca... View full abstract»

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  • Changes of Address or Delivery Problems

    Publication Year: 2007, Page(s): 106
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  • Adaptive Antennas and Receivers (Weiner, M.M., Ed.; 2005) [Reviews and Abstracts]

    Publication Year: 2007, Page(s):108 - 110
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  • Antennas and Wireless Propagation Letters (AWPL)

    Publication Year: 2007, Page(s): 112
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Aims & Scope

IEEE Antennas and Propagation Magazine actively solicits feature articles that describe engineering activities taking place in industry, government, and universities

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Meet Our Editors

Editor-in-Chief
Mahta Moghaddam