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IEEE Antennas and Propagation Magazine

Issue 2 • Date April 2002

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Displaying Results 1 - 23 of 23
  • Reginald Aubrey Fessenden and the birth of wireless telephony

    Publication Year: 2002, Page(s):38 - 47
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1117 KB) | HTML iconHTML

    The year 2000 was the 100th anniversary of the transmission of the first voice over radio. On December 23, 1900, Prof. Reginald Aubrey Fessenden after a number of unsuccessful tries - transmitted "words without wires" over a distance of 1600 m, between twin aerial systems employing 15 m masts, located on Cobb Island, Maryland. The quality of the received wireless-telephony transmission was reporte... View full abstract»

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  • Operator Theory for Electromagnetics, An Introduction [Book Review]

    Publication Year: 2002, Page(s):72 - 73
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  • Propagation Corner

    Publication Year: 2002, Page(s):108 - 110
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (251 KB) | HTML iconHTML

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  • IEEE fiscal state of affairs: iv

    Publication Year: 2002, Page(s):112 - 113
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  • Yahya Rahmat-Samii elected to royal flemish academy

    Publication Year: 2002, Page(s):118 - 119
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  • Report of awards and fellow

    Publication Year: 2002, Page(s): 120
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  • How effective is your leadership style?

    Publication Year: 2002, Page(s):124 - 125
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (178 KB) | HTML iconHTML

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  • Report of the transactions editor

    Publication Year: 2002, Page(s):126 - 128
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  • Report on asian presentations by AP-S distinguished lecturer

    Publication Year: 2002, Page(s):128 - 130
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  • Report on AP-S distinguished lecturer presentation in Japan

    Publication Year: 2002, Page(s): 131
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  • Electromagnetic Modelling of Wire Antenna Structures [Book Review]

    Publication Year: 2002, Page(s): 73
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  • Command preprocessor for radio telescopes and microwave antennas

    Publication Year: 2002, Page(s):30 - 37
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (611 KB) | HTML iconHTML

    The LQG (linear-quadratic-Gaussian) controllers, designed for the NASA Deep Space Network antennas, have small tracking errors and are resistant to wind disturbances. However, they induce limit cycling during antenna-slewing operations and target acquisition. The cycling is caused by the violation of the antenna's rate and acceleration limits. This problem can be avoided by introduction of a comma... View full abstract»

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  • COMAR [IEEE Committee on Man Radiation]

    Publication Year: 2002, Page(s):104 - 105
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    The author reports the activities of the IEEE Committee on Man and Radiation (COMAR). COMAR critically examines and interprets the literature on biological effects. Its findings are usually reported in the form of Technical Information Statements (TISs). While the Committee holds several regular meetings every year, most of the technical work is done offline, and discussed via e-mail. It should be... View full abstract»

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  • Phase and delay in corporate-fed arrays

    Publication Year: 2002, Page(s):24 - 29
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (535 KB) | HTML iconHTML

    The distribution of phase and delay in corporate-fed phased arrays is examined. RMS phase errors versus scan angle are shown for digital phasers. The phaser bits should all be located at each element. The delayer bits can be also, but delayer loss, dispersion, temperature sensitivity, and size mitigate against using so many delayers. Alternative topologies, where delay bits are distributed in the ... View full abstract»

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  • Higher-order finite-difference schemes for electromagnetic radiation, scattering, and penetration .2. Applications

    Publication Year: 2002, Page(s):92 - 101
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (969 KB) | HTML iconHTML

    For pt.1 see ibid., vol.44, no.1, p.134-42 (2002). Higher-order schemes for the finite-difference time-domain (FDTD) method - in particular, a second-order-in-time, fourth-order-in-space method, FDTD(2,4) - are applied to a number of problems. The problems include array analysis, cavity resonances, antenna coupling, and shielding effectiveness case studies. The latter includes a simplified model o... View full abstract»

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  • Scientific literature on biological effects of radio frequency radiation: criteria for evaluation

    Publication Year: 2002, Page(s):140 - 142
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (397 KB) | HTML iconHTML

    There are a number of general principles that should be applied to the evaluation of the scientific literature, to determine the probability of biological effects being caused by exposure to radio-frequency (RF) radiation. Specifically, before the claims of positive or negative effects in an individual report are accepted into the body of established scientific knowledge, that report should meet t... View full abstract»

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  • Electromagnetics and exotic media: a quest for the holy grail

    Publication Year: 2002, Page(s):48 - 58
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (913 KB) | HTML iconHTML

    During the past eight years, the authors have extensively studied the properties of linear homogeneous bianisotropic media. They have studied the Green's dyadics, the factorization of the Helmholtz determinant operator, the field and source decomposition, and plane-wave propagation in various classes of these media. We give an overview of our findings, and we place these findings in historical ord... View full abstract»

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  • Optimum directivity coverage of fan-beam antennas

    Publication Year: 2002, Page(s):66 - 70
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    Cellular and point-to-multipoint wireless communication systems use fan-beam antennas for sector coverage from the central station. The ratio of the azimuth-to-elevation half-power beamwidth typically ranges from two for sites requiring low-gain antenna values to 25 or greater for sites covering large cells. This article presents an approximate formula for the antenna directivity of the fan-beam a... View full abstract»

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  • On the use of scale brass models in HF shipboard communication antenna design

    Publication Year: 2002, Page(s):12 - 23
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1413 KB) | HTML iconHTML

    A discussion on the use of scale brass models in the design and development of HF shipboard communication antenna systems is presented. This paper begins by providing a historical overview of how the US Navy and several private commercial enterprises began using scale models to develop these HF antenna systems. The discussion continues with a description of the HF scale-model range and measurement... View full abstract»

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  • The building of the Telstar antennas and radomes

    Publication Year: 2002, Page(s):80 - 90
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1449 KB) | HTML iconHTML

    July 11, 2002, marks the 40th anniversary of the first transatlantic transmission of a live TV signal via an active satellite (Telstar 1), between the United States and France (followed shortly by England). This event has been recognized by the IEEE as an electrical engineering milestone. The radome and antenna in Pleumeur-Bodou, France, which now form the basis for a telecommunications museum, ha... View full abstract»

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  • Why study electromagnetics: the first unit in an undergraduate electromagnetics course

    Publication Year: 2002, Page(s):132 - 139
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1065 KB) | HTML iconHTML

    Maxwell's equations represent a fundamental unification of electric and magnetic fields, predicting electromagnetic wave phenomena. It may seem a little odd to devote so much effort to study solutions of the 19th century's best equations. Thus we ask the question: "Of what relevance is the study of electromagnetics to our modem society? "The goal of this unit is to help answer this question. Where... View full abstract»

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  • Wireless telemedicine systems: an overview

    Publication Year: 2002, Page(s):143 - 153
    Cited by:  Papers (179)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1097 KB) | HTML iconHTML

    Rapid advances in information technology and telecommunications and, more specifically, wireless and mobile communications - and their convergence ("telematics") are leading to the emergence of a new type of information infrastructure that has the potential of supporting an array of advanced services for healthcare. The objective of this paper is to provide a snapshot of the applications of wirele... View full abstract»

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  • A new view of millimeter-wave satellite communication

    Publication Year: 2002, Page(s):59 - 61
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB) | HTML iconHTML

    Italian satellite results have broad implications for millimeter-wave satellite communication. We apply their results to high-elevation satellite systems, and find that attractive frequencies extend well beyond the Ka band, to emphasize 40-47 and 85-98 GHz 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