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IEEE Antennas and Propagation Magazine

Issue 6 • Dec. 2002

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  • Raj Mittra: 2002 AP-S Distinguished Achievement Award

    Publication Year: 2002, Page(s): 87
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    Freely Available from IEEE
  • Reviewers list

    Publication Year: 2002, Page(s): 103
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    Freely Available from IEEE
  • Dealers of lightning: xerox PARC and the dawn of the computer age [Book Review]

    Publication Year: 2002, Page(s): 108
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    Freely Available from IEEE
  • Acoustics of layered media I and II [Book Review]

    Publication Year: 2002, Page(s):108 - 110
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    Freely Available from IEEE
  • 2003 IEEE fellows announced

    Publication Year: 2002, Page(s): 136
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    Freely Available from IEEE
  • Correction - "Comment: on the equivalent circuit of a receiving antenna"

    Publication Year: 2002, Page(s): 146
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (86 KB)

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  • US patent and trademark office proposals to speed up the patent process

    Publication Year: 2002, Page(s):152 - 162
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  • On the radiation from a large, open-ended waveguide

    Publication Year: 2002, Page(s):98 - 100
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (247 KB) | HTML iconHTML

    The expressions for the electric field radiated from a large, open-ended rectangular-waveguide aperture have been derived for the propagating H and E modes, since the available expressions are erroneous. View full abstract»

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  • Expanding our students' brainpower: idea generation and critical thinking skills

    Publication Year: 2002, Page(s):140 - 144
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (431 KB) | HTML iconHTML

    How do we teach our students to think? This is not a skill that they can pick up by doing "X" number of homework problems; it is the product of good habits that must be practiced and honed on a daily basis. It is a state of mind that continually questions "Who? What? Where? When? How? Why?" In light of this reality, we developed this segment for the "Introduction to Literature Review and Proposal ... View full abstract»

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  • A critical study of the circuit relations of two distant antennas

    Publication Year: 2002, Page(s):32 - 37
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (381 KB) | HTML iconHTML

    In this work, we present a critical study of the circuit relations for two distant coupled antennas: either both are transmitting, or one is transmitting and one is receiving. We found that Carter's two mutual impedances, Z12 and Z21, are not applicable to these two cases. Two sets of circuit relations have been formulated, with two sets of wave impedances, to characterize th... View full abstract»

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  • Gravity deformation measurements of 70 m reflector surfaces

    Publication Year: 2002, Page(s):187 - 192
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (511 KB) | HTML iconHTML

    Two of NASA's Deep Space Network (DSN) 70-meter reflectors were measured using a Leica TDM-5000 theodolite. The main reflector surface was measured at five elevation angles, so that a gravity-deformation model could be derived that described the main-reflector distortions over the entire range of elevation angles. The report describes the measurement equipment and accuracy, and the results derived... View full abstract»

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  • Cellular-phone radiation effects on cancer in genetically modified mice

    Publication Year: 2002, Page(s):165 - 168
    Cited by:  Papers (2)  |  Patents (1)
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    A television interview, given by the authors of a paper reporting the results of an Australian study on the occasion of its publication (Utteridge et al. 2002) in the September, 2002, issue of the joumal Radiation Research, proclaimed that long-term exposure to microwave radiation (900 MHz) from Global System for Mobile Communication (GSM) phones is safe. Moreover, the paper's authors asserted the... View full abstract»

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  • Power flow between adjacent electric dipoles

    Publication Year: 2002, Page(s):68 - 76
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (554 KB) | HTML iconHTML

    The Poynting vector field is shown for two adjacent electric dipoles, when there is a phase difference between them. There is a boundary around the two dipoles, inside which the time-averaged Poynting-vector field flows from one dipole to the other, and outside which it flows outwards. It is shown that in spite of the behavior of the Poynting-vector field, in which the time-averaged power leaves o... View full abstract»

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  • Ionospheric effects on satellite land mobile systems

    Publication Year: 2002, Page(s):24 - 31
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (613 KB) | HTML iconHTML

    Satellite-ground radio systems are now so sensitive that ionospheric changes can disrupt their performance. This paper discusses some satellite-to-ground propagation problems in the UHF and L bands caused by the Earth's ionosphere. Such problems include signal time delay, signal dispersion, Faraday rotation, and scintillation. View full abstract»

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  • Implementing distributed FDTD codes with Java mobile agents

    Publication Year: 2002, Page(s):115 - 119
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (453 KB) | HTML iconHTML

    The main objective of this work is to highlight the advantages of coupling Java FDTD implementation with the mobile-agent computing paradigm, and to promote this approach as a flexible and valuable tool for the distributed solution of complex and large-scale problems. Therefore, we present key issues related to the distributed implementation of a finite-difference time-domain (FDTD) code using Jav... View full abstract»

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  • Modeling EM structures in the neural network toolbox of MATLAB

    Publication Year: 2002, Page(s):46 - 67
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1483 KB) | HTML iconHTML

    Neural networks are systems that can be trained to remember the behavior of a modeled structure at given operational points, and that can be used to approximate the behavior of the structure outside of the training points. These neural-net approximation abilities are demonstrated in the modeling a frequency-selective surface, a microstrip transmission line, and a microstrip dipole. Attention is gi... View full abstract»

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  • Analysis of the S-band communication link between the automated transfer vehicle and the data relay satellites in the presence of the space station

    Publication Year: 2002, Page(s):12 - 23
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB) | HTML iconHTML

    This paper addresses the electromagnetic modeling of the communication link between the automated transfer vehicle (ATV) and the Tracking & Data Relay Satellite System (TDRSS). The link is analyzed during the ISS attached phase, i.e. when the ATV is docked on the International Space Station (ISS). The main objective of the study is to verify, by adopting a deterministic approach, if in every ISS o... View full abstract»

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  • The Numeric Python EM project

    Publication Year: 2002
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (189 KB)

    The Numeric Python EM project started out as a conversion of ToyFDTD to Numeric Python (a fast vector oriented module for the Python programming language). Surprisingly, the simulation ran almost as fast as the original C-language version. Since Python is an interpreted language, the simulation conditions can easily be altered and run immediately. This makes Numeric Python an ideal prototyping lan... View full abstract»

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  • Antenna scanning techniques for estimation of spacecraft position

    Publication Year: 2002, Page(s):38 - 45
    Cited by:  Papers (8)
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    Scanning movements are added to a tracking antenna's trajectory to estimate the true spacecraft position. The scanning movements are composed of the harmonic axial movements of an antenna. This motion produces power variations of the received signal, which are used to estimate the spacecraft's position. Three different scanning patterns (conical scan, Lissajous scan, and rosette scan) are presente... View full abstract»

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  • Simulation of mobile fading channels

    Publication Year: 2002, Page(s):172 - 183
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (789 KB) | HTML iconHTML

    Many aspects of a mobile radio system are basically determined by the propagation characteristics of the channel. Therefore, an understanding and good knowledge of mobile radio channels is essential for the analysis, design, and operation of wireless systems. It allows the successful development, evaluation, and testing of any current or future communication system, whether it is for cellular mobi... 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