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IEEE Antennas and Propagation Magazine

Issue 2 • Date April 2009

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Displaying Results 1 - 25 of 61
  • IEEE Antennas & Propagation Magazine

    Publication Year: 2009, Page(s): 1
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  • Table of contents

    Publication Year: 2009, Page(s): 3
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  • Information for contributors

    Publication Year: 2009, Page(s): 4
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  • IEEE Antennas and Propagation Magazine Editors

    Publication Year: 2009, Page(s): 4
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  • Magazine Staff

    Publication Year: 2009, Page(s):5 - 6
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  • AP-S Officers and Administrative Committee

    Publication Year: 2009, Page(s): 7
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  • Feature Articles and Contributions Solicited

    Publication Year: 2009, Page(s): 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (327 KB) | HTML iconHTML

    First Page of the Article
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  • Editor's comments

    Publication Year: 2009, Page(s):8,237 - 240
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  • President's Message

    Publication Year: 2009, Page(s): 8
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  • New Antennas and Propagation Society Web Site: http://www.ieeeaps.org

    Publication Year: 2009, Page(s):8 - 9
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  • Technical Co-Sponsorship of Meetings

    Publication Year: 2009, Page(s): 9
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  • Complete Link Budgets for Backscatter-Radio and RFID Systems

    Publication Year: 2009, Page(s):11 - 25
    Cited by:  Papers (101)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3890 KB) | HTML iconHTML

    Backscatter radio - wireless communication by modulating signals scattered from a transponder (RF tag) - is fundamentally different from conventional radio because it involves two distinct links: the power-up link for powering passive RF tags, and the backscatter link for describing backscatter communication. Because of severe power constraints on the RF tag, a thorough knowledge of the backscatte... View full abstract»

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  • Characteristics of a Metal-Backed Loop Antenna and its Application to a High-Frequency RFID Smart Shelf

    Publication Year: 2009, Page(s):26 - 38
    Cited by:  Papers (18)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3489 KB) | HTML iconHTML

    In this paper, a metal-backed loop antenna (MBLA) at high frequency (HF) is characterized and applied to a radio-frequency identification (RFID) smart-shelf system. The antenna is investigated in terms of impedance matching, resonant frequency, magnetic-field intensity/field distribution, quality factor, and detection range. The study shows that the magnetic-field distribution of the metal-backed ... View full abstract»

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  • Methodology for Efficiency Measurements of Electrically Small Monopoles for Animal Tracking

    Publication Year: 2009, Page(s):39 - 47
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2590 KB) | HTML iconHTML

    For tracking purposes, small migratory birds are outfitted with antennas and transmitters so that their daily movements and migration patterns can be observed. In order to improve the practice of tracking wildlife and to extend the ranges over which animals can be tracked, it is necessary to characterize and fully exploit the parameters of the antennas being attached to animals. These birds provid... View full abstract»

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  • The Design of Spherical Conformal Antennas Using Customized Techniques Based on NURBS

    Publication Year: 2009, Page(s):48 - 60
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3910 KB) | HTML iconHTML

    What do we do when there is a need to model antennas and ground planes that have a geometry that is not planar? The accurate representation of our geometry can make a significant difference in the results, especially at higher frequencies. This paper describes how some powerful computer-aided design (CAD) tools can be developed to represent difficult non-planar antenna geometries that cannot alway... View full abstract»

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  • Change of address or delivery problems

    Publication Year: 2009, Page(s): 60
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  • CPW-Fed Quasi-Magnetic Printed Antenna for Ultra-Wideband Applications

    Publication Year: 2009, Page(s):61 - 70
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2737 KB) | HTML iconHTML

    An optimized coplanar waveguide fed quasimagnetic printed antenna for ultra wideband applications is described. A parameter study, motivated by a design procedure, allowed a substantial increase in the return-loss operational bandwidth. The numerically predicted performance was validated by means of physical measurements of fabricated samples. The measured radiation patterns of the antenna demonst... View full abstract»

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  • Three-dimensional automatic mesh generation for hybrid electromagnetic simulations

    Publication Year: 2009, Page(s):71 - 85
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4060 KB) | HTML iconHTML

    Hybrid mesh generation is required for finite-difference time-domain/finite-element time-domain (FDTD/FETD) hybrid simulations. A combined approach is presented to automatically generate Cartesian/tetrahedral hybrid meshes for open and closed structures. This approach first generates a buffer zone that surrounds a target with specified tightness. The advancing-front technique with ldquosweep-and-r... View full abstract»

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  • Errors in Projection of Plane Waves Using Various Basis Functions

    Publication Year: 2009, Page(s):86 - 98
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2556 KB) | HTML iconHTML

    Basis functions play important roles in computational electromagnetics (CEM). It is interesting to investigate the errors in the projection of the equivalent current of a plane wave using various basis functions. In this work, the projection error of various basis functions is studied. The basis functions involved are the pulse basis function, the triangular basis function, higher-order versions o... View full abstract»

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  • AP-S AdCom Minutes

    Publication Year: 2009, Page(s):100 - 111
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  • National Radio Science Meeting

    Publication Year: 2009, Page(s):112 - 113
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  • Chapter News

    Publication Year: 2009, Page(s): 114
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  • A Note from the Distinguished Lecturers' Chair

    Publication Year: 2009, Page(s): 115
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  • IEEE Transactions on Antennas and Propagation Announces a Special Issue on Antennas for Next-Generation Radio Telescopes

    Publication Year: 2009, Page(s): 116
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  • Design and Optimization of ESPAR Antennas via Impedance Measurements and a Genetic Algorithm [Antenna Designer's Notebook]

    Publication Year: 2009, Page(s):118 - 123
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1447 KB) | HTML iconHTML

    A method for the design of electronically steerable passive array radiator (ESPAR) antennas is proposed herein, based on impedance-matrix measurements and a genetic algorithm. The proposed technique is best suited for cases where commercial elements are used as building blocks for ESPAR development, since in such cases the conventional numerically based techniques used in the literature may not be... View full abstract»

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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