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Antennas and Propagation Magazine, IEEE

Issue 4 • Date Aug. 2002

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Displaying Results 1 - 16 of 16
  • Stochastic versus deterministic models in the analysis of communication systems

    Publication Year: 2002 , Page(s): 40 - 50
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (868 KB) |  | HTML iconHTML  

    When trying to analyze a complex communication system, scientists often apply concepts from stochastic modeling and analysis to obtain a description of the system, frequently assuming that this will supplement our knowledge and improve our understanding. The philosophy is to obtain a result that would occur on the average, when this system is working under normal conditions. However, we must consi... View full abstract»

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  • 2001 Best Chapter Award

    Publication Year: 2002 , Page(s): 54
    Save to Project icon | Request Permissions | PDF file iconPDF (68 KB)  
    Freely Available from IEEE
  • Spotlight 2 (East Ukraine) - 2000 IEEE microwave pioneer award

    Publication Year: 2002 , Page(s): 58
    Save to Project icon | Request Permissions | PDF file iconPDF (117 KB)  
    Freely Available from IEEE
  • Fast and efficient algorithms in computational electromag nefics [Book Review]

    Publication Year: 2002 , Page(s): 68 - 69
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    Freely Available from IEEE
  • In memoriam: Yuen-Tze Lo

    Publication Year: 2002 , Page(s): 82 - 83
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    Freely Available from IEEE
  • In memoriam: Geoffrey Hyde

    Publication Year: 2002 , Page(s): 83
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    Freely Available from IEEE
  • Baking a ham

    Publication Year: 2002 , Page(s): 84 - 85
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (206 KB) |  | HTML iconHTML  

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  • IEEE-USA Remains Opposed To UCITA

    Publication Year: 2002 , Page(s): 87
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (86 KB)  

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  • Array theory via a Fourier-transform operational calculus

    Publication Year: 2002 , Page(s): 98 - 102
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (283 KB) |  | HTML iconHTML  

    The article presents a point of view for array-antenna analysis based on an operational calculus with two-dimensional Fourier transforms. The purpose is to describe the operational calculus, and to employ it in computing the array factor of a finite-extent phased array. Fourier-transform calculus is a very familiar subject to undergraduate electrical engineering students because of its central rol... View full abstract»

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  • A method and a GUI for the creation of azimuth-track level-pointing-error corrections

    Publication Year: 2002 , Page(s): 23 - 29
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (518 KB) |  | HTML iconHTML  

    The JPL beam-waveguide (BWG) antennas are used for spacecraft tracking and for radio-astronomy observations. They are mounted on wheels that rotate around an uneven azimuth track, causing antenna deformations, and reducing pointing accuracy. The pointing errors affected by the track irregularities are repeatable, and can therefore be calibrated. The effects of the irregularities of the track can c... View full abstract»

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  • Airborne operation of portable electronic devices

    Publication Year: 2002 , Page(s): 30 - 39
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (815 KB) |  | HTML iconHTML  

    Rapidly improving electronic technology has led to a worldwide proliferation of portable electronic devices (PEDs). These have received a portion of the blame (or suspicion) for unexplained aircraft electronic-system anomalies. A significant concern about PED interference with airplane electronic systems, as well as ground communication networks, has brought about many debates; many people questio... View full abstract»

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  • An approach for automatic grid generation in three-dimensional FDTD simulations of complex geometries

    Publication Year: 2002 , Page(s): 75 - 80
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (650 KB) |  | HTML iconHTML  

    The finite-different time-domain (FDTD) method has become a popular method in computational electromagnetics because of its simplicity, flexibility, and efficiency. However, the process of generating a three-dimensional (3D) FDTD grid can be time-consuming and error-prone when manually manipulating complex geometries. In order to expedite the generation of FDTD grids, computer-graphics-based metho... View full abstract»

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  • Avoiding interference in planar arrays through the use of artificial neural networks

    Publication Year: 2002 , Page(s): 61 - 65
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (438 KB) |  | HTML iconHTML  

    This article implements an artificial neural network to find, through computer simulation, the excitations of a square planar array. The array is composed of 52 uniformly spaced subarrays, and has a quasi- in its radiation diagram. This simulation model includes the reduction of any signal interference in the shaped radiating zone after its position has been determined. View full abstract»

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  • Deterministic RF ing in phased arrays for the next generation of radio telescopes

    Publication Year: 2002 , Page(s): 13 - 22
    Cited by:  Papers (21)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (802 KB) |  | HTML iconHTML  

    A requirement of the next generation of radio telescopes for astronomy is the ability to cope with the forever increasing problem of radio-frequency interference (RFI). Unlike conventional fixed parabolic receivers, currently used in astronomy, the application of phased-array beamforming techniques opens up the possibility to spatially RFI in the RF domain, prior to signal digitization. This paper... View full abstract»

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  • Electromagnetics for the heart

    Publication Year: 2002 , Page(s): 103 - 105
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (348 KB) |  | HTML iconHTML  

    Previously, the treatment of patients with cardiac arrhythmias was mostly palliative, involving lifelong dependence on medication. Moreover, in a significant portion (10% to 15%) of these patients, available drug therapy has been found unsatisfactory because of a lack of meaningful response or unacceptable, side effects. Surgical intervention has been the principal method of treatment in these cas... View full abstract»

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  • Smart-antenna system for mobile communication networks .Part 2. Beamforming and network throughput

    Publication Year: 2002 , Page(s): 106 - 114
    Cited by:  Papers (38)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (711 KB) |  | HTML iconHTML  

    Part 1 of this paper provided an overview of smart-antenna systems, and presented a planar array as a design example. In addition, Part 1 discussed the potential of smart antennas with regard to providing increased capacity in wireless communication networks. Part 2 introduces the signal-processing aspects of the antenna array. In particular, it describes the utility of direction-of-arrival algori... View full abstract»

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The IEEE Antennas and Propagation Magazine actively solicits feature articles that describe engineering activities taking place in industry, government, and universities

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Mahta Moghaddam