IEEE Antennas and Propagation Magazine

Issue 2 • April 2010

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  • [Front cover]

    Publication Year: 2010, Page(s): c1
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  • Table of contents

    Publication Year: 2010, Page(s): 3
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  • Information for contributors

    Publication Year: 2010, Page(s): 4
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  • Magazine staff

    Publication Year: 2010, Page(s):5 - 6
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  • AP-S Officers and Administrative Committee

    Publication Year: 2010, Page(s): 7
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  • Feature Articles and Contributions Solicited

    Publication Year: 2010, Page(s): 7
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  • Editor's comments

    Publication Year: 2010, Page(s):8,222 - 225
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  • President's Message

    Publication Year: 2010, Page(s):8 - 9
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  • The Solution of Second-Order Functional Difference Equations

    Publication Year: 2010, Page(s):10 - 18
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (702 KB) | HTML iconHTML

    This paper reviews analytical and numerical techniques for solving second-order functional difference equations. A periodic multiplier aside, solutions to these equations can be expressed as linear combinations of two linearly independent particular solutions. One of these solutions can often be found either analytically, by exploiting a known relationship between both solutions, or numerically, b... View full abstract»

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  • Analytical Development of the Far-Zone Radiation Integral for an Arbitrary Planar Spiral Antenna

    Publication Year: 2010, Page(s):19 - 30
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3971 KB) | HTML iconHTML

    The planar spiral antenna's radiation integral is both conceptually and computationally complex. In the past, the far-field pattern has been found by either approximating the spiral's shape to make the computation tractable, or by using a numerical approximation. In this paper, the radiation integral for an arbitrary planar spiral antenna is now derived without approximating its shape, using a rea... View full abstract»

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  • Getting the magazine by air freight

    Publication Year: 2010, Page(s): 30
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  • Change of address or delivery problems

    Publication Year: 2010, Page(s): 30
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  • Review of Soft and Hard Horn Antennas, Including Metamaterial-Based Hybrid-Mode Horns

    Publication Year: 2010, Page(s):31 - 39
    Cited by:  Papers (27)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2579 KB) | HTML iconHTML

    This paper is divided into three parts. Part one gives an overview of the early history of the design and implementation of hard horn antennas, and of the concept formulation of soft and hard electromagnetic surfaces. Part two presents a review of all known classes of soft and hard hybrid-mode horns. Part three presents a new class of hybrid-mode horns, based on the use of a low-index metamaterial... View full abstract»

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  • APAS: An Advanced Phased-Array Simulator

    Publication Year: 2010, Page(s):40 - 56
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7123 KB) | HTML iconHTML

    This article presents a description of the computer program APAS, a sophisticated phased-array simulator software package for the design and analysis of a wide variety of planar phased-array antennas. It offers accurate, high-speed computation of the far-field patterns of planar phased antennas, including advanced far-field analysis capabilities and comprehensive two-dimensional and three-dimensio... View full abstract»

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  • Radiation Pattern Calculation for Arbitrary Conformal Arrays that Include mutual-coupling effects

    Publication Year: 2010, Page(s):57 - 63
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1552 KB) | HTML iconHTML

    An efficient approach for calculating the far-field patterns of conformal array antennas mounted on arbitrarily shaped platforms is proposed in this paper. Starting from the superposition principle for arrays, an active-element-pattern technique, including element mutual coupling and platform effects, is used to illuminate the radiation characteristics of arrays. By dividing all element into diffe... View full abstract»

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  • About Antenna Gain Measurement in A Fresnel Zone

    Publication Year: 2010, Page(s):64 - 70
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    A method for calculating the measurement error of the directivity characteristics for a two-dimensional antenna placed in a Fresnel zone is presented. The calculation method is based on replacement of a planar-area field with rays converging to an observation point, by a convex-area field with parallel rays. The method is different from the well-know method. It is easier to understand. It permits ... View full abstract»

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  • A Systematic Approach for Radiated System-Level Verification of Unknown Sources Inside Satellites from Unit-Level Measurements

    Publication Year: 2010, Page(s):71 - 85
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4400 KB) | HTML iconHTML

    A hybrid numerical/experimental procedure for the characterization of radiated emissions from electronic devices at the system level from measurements at the unit level is presented in this work. The procedure is based on the characterization of the device in free space, the computation of equivalent currents for the equipment, followed by computation of the radiation of the device inside the sate... View full abstract»

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  • Correction

    Publication Year: 2010, Page(s): 86
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  • Membership Application

    Publication Year: 2010, Page(s): 87
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  • Hisamatsu Nakano Receives Award from the Government of Japan

    Publication Year: 2010, Page(s): 88
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  • Chapter News

    Publication Year: 2010, Page(s):89 - 90
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  • A Note from the Distinguished Lecturer's Chair

    Publication Year: 2010, Page(s): 91
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  • USNC/URSI National Radio Science Meeting in Boulder: Not Just Another Conference

    Publication Year: 2010, Page(s):92 - 94
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  • USNC/URSI Student Paper Awards

    Publication Year: 2010, Page(s): 95
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  • Analysis and Design of the Circular-Disk Microstrip Antenna with a Shorting Pin

    Publication Year: 2010, Page(s):96 - 98
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (467 KB) | HTML iconHTML

    In this paper, a special circular-disk microstrip antenna is discussed, and the cavity-mode solution is given. The influence of the shorting pin on the resonance frequency is discussed, and a formula for the approximate calculation of k is presented. The results of simulation using Ansoft's HFSS and calculations of the main mode are presented through several design examples, and the results were a... View full abstract»

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Mahta Moghaddam