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Antennas and Propagation Magazine, IEEE

Issue 3 • Date June 2000

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Displaying Results 1 - 13 of 13
  • Electromagnetic mixing formulas and applications

    Publication Year: 2000, Page(s):72 - 73
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  • Synthesis of antenna arrays using genetic algorithms

    Publication Year: 2000, Page(s):12 - 20
    Cited by:  Papers (72)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    In this article, two particular methods for the synthesis of the complex radiation pattern of a linear and a planar array, based on genetic algorithms (GAs), are discussed. First, we present a combination of Schelkunoff's method and GAs for linear arrays with arbitrary radiation patterns; then, we consider the synthesis of planar arrays with rectangular cells. The results show the flexibility of G... View full abstract»

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  • Evaluation of directivity for planar antenna arrays

    Publication Year: 2000, Page(s):64 - 67
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    In this paper, the directivity, including phase shift factors, for several types of uniformly excited planar arrays is obtained. Four types of dipole arrays are considered: arrays of collinear short dipoles, and of parallel short dipoles; and broadside and end-fire arrays of crosses of short dipoles. Curves of directivity versus inter-element spacing and scan angle for planar arrays with these ele... View full abstract»

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  • The SUMA graduate fellowships in advanced electromagneties

    Publication Year: 2000, Page(s): 76
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  • Reader feedback

    Publication Year: 2000, Page(s):84 - 89
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

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  • An addendum to “Numerical modeling of an enhanced very early time electromagnetic (VETEM) prototype system”

    Publication Year: 2000, Page(s):54 - 57
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    For original paper see Cui et al. (IEEE Antennas and Propagation Magazine, vol.42, no.2, p.17-27, 2000 April). Cui et al. proposed two numerical models to simulate an enhanced very early time electromagnetic (VETEM) prototype system, used for buried-object detection and environmental problems. In the first model, the transmitting and receiving loop antennas were accurately analyzed using the metho... View full abstract»

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  • The antenna system for the Multifrequency Scanning Microwave Radiometer (MSMR)

    Publication Year: 2000, Page(s):21 - 30
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    This paper presents the design and development of an antenna system for the Multi-frequency Scanning Microwave Radiometer (MSMR) payload, flown on Oceansat-1, in May, 1999. The antenna was designed to meet stringent specifications of a very low cross-polarization level, high beam efficiency, good pattern symmetry, and low VSWR, at four widely separated frequency bands. It used a common aperture-fe... View full abstract»

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  • Genetic design of linear antenna arrays

    Publication Year: 2000, Page(s):92 - 100
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    Discusses a way to optimize both the topology and the numerical parameters of an antenna design. The approach relies on an “antenna language” to define how antennas are constructed, and a genetic algorithm to create new designs using this language. The grammatical rules of a language can be very vague or very specific, depending on the purpose of the designer. With a vague grammar, gen... View full abstract»

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  • Effects of microwave and mobile-telephone exposure on memory processes

    Publication Year: 2000, Page(s):118 - 120
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    Three behavioral tests are described using rats to examine changes associated with learning and memory tasks, following microwave exposure. Working or short-term memory was measured via object discrimination, spatial memory was assessed using a radial-arm maze with food rewards, and spatial-reference learning and memory were measured using a circular water maze. The results indicate significant SA... View full abstract»

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  • SuperNEC: antenna and indoor-propagation simulation program

    Publication Year: 2000, Page(s):31 - 48
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (892 KB)

    SuperNEC is a hybrid MoM-UTD antenna and electromagnetic simulation program, developed by Poynting Software (Pty) Ltd. The UTD primitives available in the code are dielectrically coated, multi-faceted plates and elliptical cylinders. The MoM primitives supported are wire segments. The program is capable of running in parallel on a heterogeneous network of processors. A Matlab-based, interactive gr... View full abstract»

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  • A summary of the transmitting and receiving properties of antennas

    Publication Year: 2000, Page(s):49 - 53
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    An expression for the electric field radiated by an arbitrary current distribution is given, which leads to a straightforward characterization of an antenna by a complex vector called the equivalent length. All classical transmitting parameters-such as the radiated power density, power intensity, radiation resistance, directional gain, and gain-are simple functions of the equivalent length. The sa... View full abstract»

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  • Professional career timeline

    Publication Year: 2000, Page(s):113 - 115
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  • Smart antennas

    Publication Year: 2000, Page(s):129 - 136
    Cited by:  Papers (142)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    Smart antennas have received increasing interest for improving the performance of wireless radio systems. These systems of antennas include a large number of techniques that attempt to enhance the received signal, suppress all interfering signals, and increase capacity, in general. The main purpose of this article is to provide an overview of the current state of research in the area of smart ante... 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