IEEE Antennas and Propagation Magazine

Issue 1 • Feb. 2018

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Displaying Results 1 - 25 of 33
  • [Front cover]

    Publication Year: 2018, Page(s): C1
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  • Table of contents

    Publication Year: 2018, Page(s): 1
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  • Staff Listing

    Publication Year: 2018, Page(s): 2
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  • Antennas for Autonomy [Editor's Comments]

    Publication Year: 2018, Page(s): 4
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  • A Call to Action [President's Message]

    Publication Year: 2018, Page(s): 6
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  • Call for Proposals to Host the Joint IEEE AP-S International Symposium on Antennas and Propagation/USNC-URSI Radio Science Meeting

    Publication Year: 2018, Page(s): 7
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  • IEEE AP-S Chapter News and Activities Planned for 2018 [Chapter News]

    Publication Year: 2018, Page(s):8 - 13
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  • Considering High-Performance Near-Field Reader Antennas: Comparisons of Proposed Antenna Layouts for Ultrahigh-Frequency Near-Field Radio-Frequency Identification

    Publication Year: 2018, Page(s):14 - 26
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (5526 KB) | HTML iconHTML

    Radio-frequency identification (RFID) is being widely used in supply chain and logistics applications for wireless identification and the tracking and tracing of goods, with excellent performance for the long-range interrogation of tagged pallets and cases (up to 4-6 m, with passive tags). Item-level tagging (ILT) has also received much attention, especially in the pharmaceutical and retail indust... View full abstract»

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  • Multiobjective Optimization Design for Electrically Large Coverage: Fragment-Type Near-Field/Far-Field UHF RFID Reader Antenna Design

    Publication Year: 2018, Page(s):27 - 37
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (5159 KB) | HTML iconHTML

    The design of an ultrahigh-frequency (UHF) radio-frequency identification (RFID) reader antenna covering an electrically large near-field area is challenging for near-field UHF RFID applications. In such a design, magnetic field distribution on a large coverage area is required to be as uniform as possible. For some specific UHF near-field RFID applications, given radiation pattern characteristics... View full abstract»

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  • Antenna Miniaturization Techniques: A Review of Topology- and Material-Based Methods

    Publication Year: 2018, Page(s):38 - 50
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (7089 KB) | HTML iconHTML

    Antenna miniaturization has been the subject of numerous studies for almost 70 years [1]-[4]. Early studies showed that a decrease in the size of an antenna results in a direct reduction in its bandwidth and efficiency (hr) [1], [2]. The size limitation translates into a lower boundary on the achievable radiation quality factor (Q factor) and consequently on the maximum achievable impedance bandwi... View full abstract»

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  • A Differential Evolution Performance Comparison: Comparing How Various Differential Evolution Algorithms Perform in Designing Microstrip Antennas and Arrays

    Publication Year: 2018, Page(s):51 - 61
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (4849 KB) | HTML iconHTML Multimedia Media

    In this article, we have undertaken a performance comparison of different variants and hybridized schemes of differential evolution (DE) algorithms with respect to several antenna and array designs. These include DE/rand/1, self-adaptive DE (SADE), DE with global and local neighborhood search (DEGL), biogeography-based optimization with DE (BBODE), modified DE (MDE), MDE with p-best crossover stra... View full abstract»

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  • A Multifunctional Antenna with a Small Form Factor: Designing a Novel Series-Fed Compact Triangular Microstrip Ring Resonator Antenna Array

    Publication Year: 2018, Page(s):62 - 71
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (4891 KB) | HTML iconHTML

    This article examines a noval series-fed triangular microstrip ring resonator (TMRR) antenna array. Each radiating element is made up of a wavelength-long microstrip line with the two ends joined together to form an isosceles triangle. The antenna array is fed by an N-shaped microstrip feed line and excited by a coaxial feed probe. The operational mechanism of the proposed feed system in terms of ... View full abstract»

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  • Indented Antenna Arrays for High Isolation: The Growing Interest in Simultaneous-Transmit-and-Receive-Based Full-Duplex Communication Systems

    Publication Year: 2018, Page(s):72 - 80
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (4957 KB) | HTML iconHTML

    In full-duplex communication systems, reflections of transmitted waves as a result of the antenna mismatch may leak into the receiver and create strong on-site interferences. Such reflections cannot be suppressed by conventional frontend isolation techniques even with ideal circulators. Indented antenna arrays are thus proposed to destructively combine the reflection from each antenna element and ... View full abstract»

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  • Induced Eddy Currents in Simple Conductive Geometries: Mathematical Formalism Describes the Excitation of Electrical Eddy Currents in a Time-Varying Magnetic Field

    Publication Year: 2018, Page(s):81 - 88
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1777 KB) | HTML iconHTML

    A complete mathematical formalism is introduced to describe the excitation of electrical eddy currents due to a time-varying magnetic field. The process works by applying a quasistatic approximation to Ampere's law and then segregating the magnetic field into impressed and induced terms. The result is a nonhomogeneous vector Helmholtz equation that can be analytically solved for many practical geo... View full abstract»

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  • Indian Conference on Antennas and Propagation (InCAP)

    Publication Year: 2018, Page(s): 89
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  • [Meetings & Symposia]

    Publication Year: 2018, Page(s):90 - 91
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  • [Courses]

    Publication Year: 2018, Page(s): 92
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  • IEEE Transactions on Antennas and Propagation Special Issue on Wireless Healthcare Biotechnology

    Publication Year: 2018, Page(s): 93
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  • Characteristics of Large Antennas with Radomes [Antenna Applications Corner]

    Publication Year: 2018, Page(s):94 - 103
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (6482 KB) | HTML iconHTML

    Radomes for large ground antennas used in satellite communications have been analyzed extensively in the past, but little work related to the practical evaluation of radio-frequency (RF) performance has been reported. This article summarizes the results of observations conducted on three different kinds of antennas with radomes operating at the X and Ka frequencies. View full abstract»

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  • "A Long Time Ago in a Galaxy Far, Far Away..." [Turnstile]

    Publication Year: 2018, Page(s): 104
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  • Doctoral Research Grants and Eugene F. Knott Memorial Pre-Doctoral Research Grants for 2018-19

    Publication Year: 2018, Page(s): 105
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  • Characterizing Antennas in the Time and Frequency Domains [Education Corner]

    Publication Year: 2018, Page(s):106 - 110
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (897 KB) | HTML iconHTML

    The antenna definitions standard [1] currently has no terms that describe antenna performance in the time domain, possibly due to the complexity of the equations. However, if the antenna equations are expressed using quantities related to the square root of power, then simple expressions are obtained that are valid in both the frequency and time domains. This leads to a number of new terms that sh... View full abstract»

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  • CEMi 2018

    Publication Year: 2018, Page(s): 110
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  • FEM2018

    Publication Year: 2018, Page(s): 111
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  • Broadband Cloaking Obtained Using HOBBIES Optimization [EM Progammer's Notebook]

    Publication Year: 2018, Page(s):112 - 117
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (5473 KB) | HTML iconHTML

    In this article, we describe the notion of a cloak achieved by employing the usual composite dielectrics surrounding a metal cube, a concept that was first presented by Hwang and Chin [1]. Here, we use an optimization procedure to improve on their results and obtain a three-dimensional composite dielectric structure that can achieve a better broadband match than that of [1]. The two structures of ... 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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Meet Our Editors

Editor-in-Chief
Mahta Moghaddam