IEEE Antennas and Propagation Magazine

Issue 6 • Dec. 2009

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  • [Front cover]

    Publication Year: 2009, Page(s): c1
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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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  • 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
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  • Editor's comments

    Publication Year: 2009, Page(s):8,238 - 240
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  • 2010 IEEE International Symposium on Antennas and Propagation & CNC-USNC/URSI Radio Science Meeting

    Publication Year: 2009, Page(s):9 - 18
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  • 2009 IEEE Antennas and Propagation Society

    Publication Year: 2009, Page(s): 19
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  • High Scalability FMM-FFT Electromagnetic Solver for Supercomputer Systems

    Publication Year: 2009, Page(s):20 - 28
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6601 KB) | HTML iconHTML

    An efficient parallel implementation of the Fast Multipole Method (FMM) combined with the fast Fourier transform (FFT) is presented in this paper. The good scaling properties of the FMM-FFT, combined with a smart parallelization strategy, has been shown to be very effective when using large parallel supercomputers. A challenging problem with more than 150 million unknowns has been solved, demonstr... View full abstract»

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  • Change of address or delivery problems

    Publication Year: 2009, Page(s): 28
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  • AP-S Election Results

    Publication Year: 2009, Page(s): 28
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  • Getting the magazine by air freight

    Publication Year: 2009, Page(s): 28
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  • The Significance of Ground-Plane Size and Antenna Location in Establishing the Performance of Ground-Plane-Dependent Antennas

    Publication Year: 2009, Page(s):29 - 43
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (35571 KB) | HTML iconHTML

    The performance properties of small, multi-band, device-integrated antennas are significantly affected by the ground-plane structure on which they are mounted. In many cases, the time-varying current on the ground plane is the primary source of radiation that determines both the antenna's impedance and radiation-pattern properties. With device-sized or integrated antennas, it is sometimes presumed... View full abstract»

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  • Estimation of UHF RFID Reading Regions in Real Environments

    Publication Year: 2009, Page(s):44 - 57
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (11832 KB) | HTML iconHTML

    The reading range is one of the most critical performance indicators of radio-frequency identification (RFID) systems. It depends on many physical and geometrical parameters. Typically, in the ultra-high-frequency band (UHF: 860 MHz to 960 MHz), the maximum size of the reading region is estimated by the free-space propagation model. This is based on the Friis formula, even if much more accurate pr... View full abstract»

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  • An Elementary View of Maxwell's Displacement Current

    Publication Year: 2009, Page(s):58 - 68
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6647 KB) | HTML iconHTML

    Maxwell's displacement current is addressed in the most basic of terms, starting from Coulomb's law. The aim of this approach is to shed new light on some questions that have dogged the concept, and to help understanding of the key issues involved, in particular, cause and effect, common origin of induced magnetic field and displacement current, differences resulting from a fundamental physical vi... View full abstract»

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  • A Comparative Study of Optimization Techniques in Adaptive Antenna Array Processing: The Bacteria-Foraging Algorithm and Particle-Swarm Optimization

    Publication Year: 2009, Page(s):69 - 81
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7969 KB) | HTML iconHTML

    This paper presents a comparative study between the Bacteria-Foraging (BF) and Particle-Swarm Optimization (PSO) algorithms, and their application to the antenna-array optimization problem. The performance of the Bacteria-Foraging Algorithm is studied by varying its different parameters in beamforming and null-steering problems. Null steering along with sidelobe suppression is also done for variou... View full abstract»

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  • Integral Equation Modeling of Waveguide-Fed Planar Antennas

    Publication Year: 2009, Page(s):82 - 92
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6937 KB) | HTML iconHTML

    This paper presents a method for the analysis of planar multilayered waveguide-fed antennas. The method combines mixed-potential integral equations (for laterally open regions) and modal-field integral equations (for laterally closed regions) with a seamless transition between the two domains. The method has been implemented in a numerical tool, and the simulation results of two waveguide-fed plan... View full abstract»

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  • Overhead Quasi-Coaxial Transmission Lines

    Publication Year: 2009, Page(s):93 - 101
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4250 KB) | HTML iconHTML

    Design expressions for overhead quasi-coaxial transmission lines are developed and presented in a simplified form, suitable for engineering purposes. The electrostatic logarithmic potential method is used for low-, medium-, and high-frequency applications, where the line dimensions in wavelengths are quite low, so it is not necessary to take into account the retarded potential. This kind of transm... View full abstract»

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  • Announcement and Call for Papers

    Publication Year: 2009, Page(s): 102
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  • Chapter News

    Publication Year: 2009, Page(s):104 - 105
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (521 KB) | HTML iconHTML

    As I write this month's column, it is a bittersweet experience. It is bitter because this will be my last column, and my last month, as your Chapter Activities Chair. It is sweet since I can announce that the incoming Chapter Activities Chair is Prof. Zhongxiang Shen of the Nanyang Technological University. He is introduced at the end of this column. View full abstract»

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  • Introducing Zhongxiang Shen, Incoming AP-S Chapter Activities Chair

    Publication Year: 2009, Page(s): 106
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  • AP-S Distinguished Lecturer Program for 2009–2010

    Publication Year: 2009, Page(s): 107
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (343 KB) | HTML iconHTML

    The full abstracts of the Distinguished Lecturers' talks and the Lecturers' biographies appeared in the June 2009 issue of the Magazine. This information can also be obtained by sending an e-mail request to info.distlect.ap@ieee.org, or via a link at http://www.ieeeaps.org. View full abstract»

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  • ISAP 2010: Call for Papers

    Publication Year: 2009, Page(s): 108
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  • Design of Short Backfire Antennas [Antenna Designer's Notebook]

    Publication Year: 2009, Page(s):110 - 120
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7447 KB) | HTML iconHTML

    The design proposed in this article is dedicated to short backfire antennas fed by a dipole or a crossed dipole. The studies were carried out with different types of short backfire antennas. The directivity of the antennas designed ranged between 12 and 20.5 dB, The presented design procedure may be very useful for the creation of high-efficiency and compact microwave antennas with various applica... 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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Editor-in-Chief
Mahta Moghaddam