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Antennas and Propagation Magazine, IEEE

Issue 3 • Date June 2002

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Displaying Results 1 - 16 of 16
  • Photos from the 2002 AP-S Awards Banquet

    Publication Year: 2002 , Page(s): 74 - 82
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    Freely Available from IEEE
  • In memoriam: Nasser Golshan

    Publication Year: 2002 , Page(s): 130
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    Freely Available from IEEE
  • 2002 IEEE Dennis J. Picard medal for radar technologies and applications

    Publication Year: 2002 , Page(s): 137
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    Freely Available from IEEE
  • 2002 S. A. Schelkunoff transactions prize paper award

    Publication Year: 2002 , Page(s): 137
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    Freely Available from IEEE
  • Honorable Mention for the S.A. Schelkunoff Transactions Prize Paper award

    Publication Year: 2002 , Page(s): 137
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    Freely Available from IEEE
  • 2002 Harold A. Wheeler applications prize paper award

    Publication Year: 2002 , Page(s): 137
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    Freely Available from IEEE
  • R.W.P. King Award

    Publication Year: 2002 , Page(s): 137
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    Freely Available from IEEE
  • Applications of the Lambert W function in electromagnetics

    Publication Year: 2002 , Page(s): 139 - 142
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (372 KB) |  | HTML iconHTML  

    The solution to many EM problems can be formulated in terms of the Lambert W function. Several have been presented here. The function frequently occurs in the dispersion relations for transmission-line problems when the limiting cases of small radius or thickness are considered. Numerical algorithms of the function have been incorporated into the popular mathematical computation packages, which al... View full abstract»

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  • Self-structuring antennas

    Publication Year: 2002 , Page(s): 11 - 23
    Cited by:  Papers (30)  |  Patents (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1432 KB) |  | HTML iconHTML  

    This paper introduces a new class of antennas, called self-structuring antennas (SSAs). An SSA has the ability to alter its electrical shape in response to changes in its environment. This property makes an SSA suitable for use in a number of traditionally difficult antenna situations. The basic principles of the SSA are introduced, and a number of potential applications are highlighted. Details o... View full abstract»

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  • Designing classical offset Cassegrain or Gregorian dual-reflector antennas from combinations of prescribed geometric parameters

    Publication Year: 2002 , Page(s): 114 - 123
    Cited by:  Papers (18)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (662 KB) |  | HTML iconHTML  

    This paper proposes a simple procedure for the design of classical offset Cassegrain or Gregorian dual-reflector antennas from combinations of prescribed geometric parameters. This procedure has already been applied to classical Cassegrain and Gregorian antennas, to classical displaced-axis Cassegrain and Gregorian antennas, and to classical offset Dragonian antennas. The antenna systems can be fu... View full abstract»

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  • Conformal array antenna for observation platforms in low Earth orbit

    Publication Year: 2002 , Page(s): 103 - 104
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (371 KB) |  | HTML iconHTML  

    A conformal array antenna can provide the flexibility that platforms in low Earth orbit need to download their data to ground stations. It does this by producing multiple beams for various ground stations. Even if only one ground station is used at a time, the higher gain of this antenna, compared to a fixed-beam antenna, allows the ground-station antennas to be down-sized, or, equivalently, the d... View full abstract»

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  • A color map for effective black-and-white rendering of color-scale images

    Publication Year: 2002 , Page(s): 94 - 96
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (756 KB)  

    Default color maps on color images often reproduce to confusing grayscale images. The proposed color map maintains an aesthetically pleasing color image that automatically reproduces to a monotonic grayscale with discrete, quantifiable saturation levels. View full abstract»

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  • Aspects of the Method of Auxiliary Sources (MAS) in computational electromagnetics

    Publication Year: 2002 , Page(s): 48 - 64
    Cited by:  Papers (60)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1883 KB) |  | HTML iconHTML  

    The method of auxiliary sources (MAS) is a numerical technique, alternative to the standard surface integral-equation formulation, suitable for solving elliptic boundary-value problems appearing in electromagnetic scattering analysis, antenna modeling, waveguide structures, etc. This paper provides an overview of MAS as applied to computational electromagnetics. The fundamentals of MAS are present... View full abstract»

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  • Millimeter-wave folded reflector antennas with high gain, low loss, and low profile

    Publication Year: 2002 , Page(s): 24 - 29
    Cited by:  Papers (55)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (784 KB) |  | HTML iconHTML  

    Periodic and quasi-periodic structures, printed on a dielectric substrate, can be employed to control the reflection and transmission properties of incident waves as a function of structure geometry. Local variations of the element geometry on a substrate with backside metallization - resulting in respective variations of the reflection phase angle - can be used to design printed reflectarray ante... View full abstract»

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  • A description and the measured performance of three coaxial beam-rotating antenna prototypes

    Publication Year: 2002 , Page(s): 30 - 47
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2307 KB) |  | HTML iconHTML  

    Many high-power microwave (HPM) sources utilize an azimuthally symmetric output mode, like the TM01 circular waveguide or the coaxial TEM modes. If radiated directly, these modes produce a doughnut-shaped radiation pattern, with a boresight . Mode-conversion techniques for transforming the azimuthally symmetric mode to one with a more desirable radiated pattern are possible, but mode co... View full abstract»

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  • Smart-antenna systems for mobile communication networks. Part 1. Overview and antenna design

    Publication Year: 2002 , Page(s): 145 - 154
    Cited by:  Papers (56)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1584 KB) |  | HTML iconHTML  

    This paper focuses on the interaction and integration of several critical components of a mobile communication network using smart-antenna systems. This wireless network is composed of communicating nodes that are mobile, and its topology is continuously changing. One of the central motivations for this work comes from the observed dependence of the overall network throughput on the design of the ... 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