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IEEE Antennas and Propagation Magazine

Issue 2 • Date April 2011

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Displaying Results 1 - 25 of 70
  • [Front cover]

    Publication Year: 2011, Page(s): c1
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  • [Advertisement]

    Publication Year: 2011, Page(s): c2
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  • Table of contents

    Publication Year: 2011, Page(s): 3
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  • Information for Contributors

    Publication Year: 2011, Page(s): 4
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  • Magazine Staff

    Publication Year: 2011, Page(s):5 - 6
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  • AP-S Officers and Administrative Committee

    Publication Year: 2011, Page(s): 7
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  • Feature Articles and Contributions Solicited

    Publication Year: 2011, Page(s): 7
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  • Editor's Comments

    Publication Year: 2011, Page(s):8,248 - 248
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  • Small Antennas Based on CRLH Structures: Concept, Design, and Applications

    Publication Year: 2011, Page(s):10 - 25
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7746 KB) | HTML iconHTML

    Recent growth in the use of wireless wide-area networks (WWAN), the adoption of broadband wireless local-area networks (WLAN), and consumer demand for seamless global access has pushed the wireless industry to support most broadband wireless standards. These are supported in different geographical areas by supporting multi-band and multimode operation in cellular handsets, access points, laptops, ... View full abstract»

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  • Size-Reduction Method for Dielectric-Resonator Antennas

    Publication Year: 2011, Page(s):26 - 38
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5106 KB) | HTML iconHTML

    Size reduction for a single antenna element is desirable for wireless personal communications. Here, a 750/0 size reduction of the dielectric-resonator antenna (DRA) is achieved while maintaining the antenna's bandwidth at the same time by incorporating the concepts of an electric conductor and a magnetic conductor. To validate this concept, infinite perfect electric conductor (PEC) and infinite p... View full abstract»

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  • RFID Reader Antennas for Tag Detection in Self-Confined Volumes at UHF

    Publication Year: 2011, Page(s):39 - 50
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4446 KB) | HTML iconHTML

    Confinement of the detection region is a critical issue for some important RFID applications, where the coarse location of the object is required along with its identification. In the UHF band, it is a challenge to confine antenna radiation to reasonably sharp interrogation volumes, <; 10λ3, without resorting to physical barriers. This paper presents a novel approach for RFID ... View full abstract»

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  • Changes of Address or Delivery Problems

    Publication Year: 2011, Page(s): 50
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  • Getting the Magazine by Air Freight

    Publication Year: 2011, Page(s): 50
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  • Modeling and Simulation of a Helicopter-Mounted SATCOM Antenna Array

    Publication Year: 2011, Page(s):51 - 60
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5487 KB) | HTML iconHTML

    A seven-element helicopter-mounted microstrip-patch switched-beam antenna array for satellite communications (SATCOM) is described. The performance of the array antenna was simulated. A prototype was constructed, and measurements of the antenna's patterns were made. The effects of the blades of the helicopter on the patterns of the antenna were investigated. Fluctuations of 10 dB or more in magnit... View full abstract»

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  • Radar Reflectivity Measurements Of Ice at Ka Band

    Publication Year: 2011, Page(s):61 - 64
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2162 KB) | HTML iconHTML

    Naval and helicopter radars may face operational scenarios where radar returns from the surface of ice become valuable. Partly due to that, we have measured the radar reflectivity of sea ice at Ka band for very small grazing angles. For an angle of 0.7°, an effective reflectivity of -26 dBsm ± 2 dB was observed with horizontal polarization. The value obtained closely matches that pre... View full abstract»

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  • Propagation in the Ka Band: Experimental Characterization for Satellite Applications

    Publication Year: 2011, Page(s):65 - 76
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4268 KB) | HTML iconHTML

    The use of the Ka band (30/20 GHz) in satellite-communication systems is expected to grow in the next few years, with the launches and planned launches of more than 10 satellites in 2010 and 2011 that include some Ka-band capacity. New technical standards, such as DVB-S2 and OVB-RCS, can be used in this band. A better knowledge of the channel characteristics is required, as well as experimental ti... View full abstract»

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  • Variable Reference Phase in Diffractive Antennas: Review, Applications, New Results

    Publication Year: 2011, Page(s):77 - 94
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3482 KB) | HTML iconHTML

    We review a free parameter in the design of Fresnel-zone-plate antennas. Historically, zone-plate antennas have been designed with a specific choice for this parameter. Two methods of interpreting the parameter have been identified, either in terms of a reference radius or, equivalently, a reference phase. For simplicity, here we treat this variable parameter as a reference phase. Importantly, the... View full abstract»

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  • Chapter News

    Publication Year: 2011, Page(s):95 - 97
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  • National Radio Science Meeting

    Publication Year: 2011, Page(s):98 - 99
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  • AP-S Distinguished Lecturer Program

    Publication Year: 2011, Page(s):100 - 122
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  • [Advertisement]

    Publication Year: 2011, Page(s): 123
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  • Editor's Introduction [Antenna Designer's Notebook]

    Publication Year: 2011, Page(s): 124
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  • On the Possibility of the Application of Axially Displaced Ellipse Antenna Elements for Construction of a Compact Multibeam Antenna System

    Publication Year: 2011, Page(s):125 - 128
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (803 KB) | HTML iconHTML

    The application of axially displaced ellipse antenna elements in a multibeam antenna system is recommended. It is shown that in an axially displaced ellipse antenna, a simultaneous lateral shift of both the feed and subreflector results in much more beam tilting than does a shift of the feed, alone. The results of calculations and comparisons with known data are given. View full abstract»

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  • In Memoriam: Rudiger Vahldieck (1951 -2011)

    Publication Year: 2011, Page(s): 129
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  • The Notes on Electromagnetic Pulse (EMP) and Related Subjects

    Publication Year: 2011, Page(s): 130
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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