IEEE Antennas and Propagation Magazine

Issue 1 • Feb 2004

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Displaying Results 1 - 25 of 59
  • Analysis and measurement of a broadband spiral antenna

    Publication Year: 2004, Page(s):59 - 64
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (512 KB) | HTML iconHTML

    A broadband spiral antenna (2 to 18 GHz) is modeled using the FDTD method. The inner turn of the antenna is an Archimedean spiral, while the outer turn is an Archimedean spiral with a zigzag shape. The current-density distribution along the spiral arms is first presented in the time domain, interestingly manifesting the impulse current propagation from the feed point to the outer end of the spiral... View full abstract»

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  • Special sessions

    Publication Year: 2004, Page(s): 15
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  • Modeling wind-gust disturbances for the analysis of antenna pointing accuracy

    Publication Year: 2004, Page(s):50 - 58
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (538 KB) | HTML iconHTML

    This paper develops and compares three wind models used to simulate antenna pointing errors. The first model represents wind forces acting on the antenna dish, thus closely representing actual wind action. The second model represents wind gusts as torque disturbances applied at the antenna drives. The third model represents gusts acting at the antenna rate input. A wind filter introduced in this p... View full abstract»

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  • Publishing in AP-S poblications

    Publication Year: 2004, Page(s):9 - 10
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  • A conformal mesh-generating technique for the conformal finite-difference time-domain (CFDTD) method

    Publication Year: 2004, Page(s):37 - 49
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (898 KB) | HTML iconHTML

    This article presents an efficient conformal-mesh generating technique suitable for the conformal finite-difference time-domain (CFDTD) technique. We describe the mesh generation for different types of objects, including planar structures (patch antennas and microwave circuits), as well as for arbitrary three-dimensional structures created by using AutoCAD, GID, or other commercial solid modelers.... View full abstract»

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  • Information for contributors

    Publication Year: 2004, Page(s): 4
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  • On the design of switched-beam wideband base stations

    Publication Year: 2004, Page(s):158 - 167
    Cited by:  Papers (21)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (675 KB) | HTML iconHTML

    A switch beam base-station antenna is presented. The antenna is an improvement on the Butler matrix. The input ports of the antenna are excited with equal or unequal amplitudes. The feed network is analyzed and presented in a simple manner. The antenna comprises the main part of a base station, and is useful for broadband communications. The architecture of the base station is described, and the s... View full abstract»

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  • Large Antennas of the Deep Space Network [Book Review]

    Publication Year: 2004, Page(s):110 - 111
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    Freely Available from IEEE
  • Overwhelmed by choices

    Publication Year: 2004, Page(s): 147
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  • Chapter news

    Publication Year: 2004, Page(s):80 - 84
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  • Exhibits / Technical Program

    Publication Year: 2004, Page(s): 13
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  • A design study for the basic TEM horn antenna

    Publication Year: 2004, Page(s):86 - 92
    Cited by:  Papers (42)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (549 KB) | HTML iconHTML

    In this paper, a design study was performed for the basic TEM horn antenna. In the theoretical model, care was taken to avoid the problems associated with the use of gap sources when calculating the reflection coefficient and input impedance of the antenna. All numerical calculations were made with a program based on the method of moments, and the accuracy of the numerical calculations was establi... View full abstract»

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  • Recent books

    Publication Year: 2004, Page(s): 112
    Cited by:  Papers (1)
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  • Towed antennas for US submarine communications: a historical perspective

    Publication Year: 2004, Page(s):23 - 36
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1597 KB) | HTML iconHTML

    The evolution of the submarine and the development of radio communication are interrelated. From the earliest days, the effectiveness of a submarine as a war-fighting vessel was linked to its ability to receive orders via the then new medium of radio. This paper traces the earliest work that linked the two together - particularly from the viewpoint of the antenna as the ship's electronic "ears" - ... View full abstract»

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  • Planar Antennas for Wireless Communications [Book Review]

    Publication Year: 2004, Page(s): 110
    Cited by:  Papers (1)
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    Freely Available from IEEE
  • Antennas for non-specialists

    Publication Year: 2004, Page(s):65 - 84
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (964 KB) | HTML iconHTML

    The article reports the experience of giving a hands-on antenna course to a group of participants who were not antenna specialists. The discussion of the results is presented in the format of a student-instructor dialog. The questions asked by the participants were sometimes very challenging to answer, especially without resorting to mathematical formulas. For the benefit of those antenna instruct... View full abstract»

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  • Social events

    Publication Year: 2004, Page(s):16 - 19
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  • AMTA corner

    Publication Year: 2004, Page(s):169 - 170
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  • Introducing Trevor Bird, chapter activities coordinator and associate editor for chapter news

    Publication Year: 2004, Page(s): 85
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  • EMP note series

    Publication Year: 2004, Page(s):111 - 112
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  • Arecibo Observatory 40th anniversary celebration

    Publication Year: 2004, Page(s):94 - 97
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (573 KB) | HTML iconHTML

    The National Astronomy and Ionosphere Center (NAIC), operated by Cornell University for the National Science Foundation, has its laboratory at Arecibo in Puerto Rico. The observatory's main instrument is a radio/radar telescope that utilizes a giant reflector antenna 1,000 feet in diameter, the largest in the world by considerable margin. A 40th anniversary celebration of the 1963 inauguration of ... View full abstract»

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  • Fourth Internefianal Conference on Antenna Theory and Techniques

    Publication Year: 2004, Page(s):114 - 116
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  • Controversy over cellular mobile-telecommunication base-station-antenna installations

    Publication Year: 2004, Page(s):155 - 156
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (302 KB) | HTML iconHTML

    The two most compelling issues that cause cellular-telephone towers to be so controversial are the public health and aesthetic concerns. People love the wireless convenience and instant connectivity, but no one likes the antenna tower that enables it. The siting of the cellular mobile telephone towers remains a divisive issue, worldwide. Some concerns stem from a lack of personal freedom of choice... View full abstract»

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  • Stepped-waveguide material-characterization technique

    Publication Year: 2004, Page(s):170 - 175
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (456 KB) | HTML iconHTML

    Electromagnetic material characterization is the process of determining the complex permittivity and permeability of a material. Rectangular-waveguide measurements involving frequencies greater than several gigahertz require only a relatively small test sample. In an X-band (8-12 GHz) waveguide, for example, sample dimensions in the cross-sectional plane are only 0.9 in by 0.4 in. However, wavegui... View full abstract»

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  • Antennas and Wireless Propagation Letters (AWPL)

    Publication Year: 2004, Page(s): 149
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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