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IEEE Antennas and Propagation Magazine

Issue 6 • Date Dec. 2008

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Displaying Results 1 - 25 of 65
  • Front cover - IEEE Antennas and Propagation Magazine

    Publication Year: 2008, Page(s): C1
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  • Table of contents

    Publication Year: 2008, Page(s): 3
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  • Information for contributors

    Publication Year: 2008, Page(s): 4
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  • Magazine Staff

    Publication Year: 2008, Page(s):5 - 6
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  • AP-S Officers and Administrative Committee

    Publication Year: 2008, Page(s): 7
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  • Editor's comments

    Publication Year: 2008, Page(s):8 - 228
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  • President's Message

    Publication Year: 2008, Page(s):8 - 9
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  • 2009 IEEE Antennas and Propagation Society Membership Application

    Publication Year: 2008, Page(s): 10
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  • IEEE International Symposium on Antennas and Propgation and USNC/URSI National Radio Science Meeting

    Publication Year: 2008, Page(s): 11
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  • 2009 IEEE International Symposium on Antennas and Propagation and USNC/URSI-Put Carolina on your mind!

    Publication Year: 2008, Page(s): 12
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  • 2009 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting - Steering Committee

    Publication Year: 2008, Page(s): 13
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  • Social Events and Companion Tours

    Publication Year: 2008, Page(s):14 - 17
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  • 2009 IEEE AP-S International Symposium & USNC/URSI

    Publication Year: 2008, Page(s):18 - 19
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  • AP-S Election Results

    Publication Year: 2008, Page(s): 38
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  • Metallized foams for fractal-shaped microstrip antennas

    Publication Year: 2008, Page(s):20 - 37
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (24324 KB) | HTML iconHTML

    An antenna manufacturing process using metallized foams is presented. A microstrip-patch antenna, inspired by the Koch island geometry, embedded in a rectangular cavity is built and tested. All the metallic parts of the antenna (patch, cavity, and feeding probe) were metaliized on the foam, resulting in a low-weight and low-complexity antenna structure. The results of return loss, directivity as a... View full abstract»

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  • Analysis of dual-reflector antennas with a reflectarray as subreflector

    Publication Year: 2008, Page(s):39 - 51
    Cited by:  Papers (21)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6441 KB) | HTML iconHTML

    In this paper, a modular technique is described for the analysis of dual-reflector antennas using a reflectarray as a subreflector. An antenna configuration based on a sub-reflectarray and a parabolic main reflector provides better bandwidth than a single reflectarray, and has a number of advantages compared with a conventional dual-reflector antenna. Examples include the possibility of beam shapi... View full abstract»

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  • Design of a broadband dipole in close proximity to an EBG ground plane

    Publication Year: 2008, Page(s):52 - 64
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (12021 KB) | HTML iconHTML

    One of the known advantages of an electromagnetic bandgap (EBG) ground plane is the fact that a straight-wire dipole can be located parallel and in very close proximity to the ground plane. For such a structure and geometry, a reasonable impedance match to 50 n) can be achieved with more bandwidth than when the dipole is located in close proximity to a PEC ground plane. However, in addition to imp... View full abstract»

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  • Calculation of the propagation loss in urban radio-access systems

    Publication Year: 2008, Page(s):65 - 70
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1898 KB) | HTML iconHTML

    A proposition for a new empirical propagation model, in the form of four formulas appropriate for characteristic types of the urban environment, is outlined. A measurement verification of some well-known models and specification of the propagation environmental are first described. Taking into account about nineteen thousand measurement cases, a new model obtained by multidimensional regression an... View full abstract»

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  • A dual-polarized antenna with pattern diversity

    Publication Year: 2008, Page(s):71 - 79
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4787 KB) | HTML iconHTML

    An antenna that is capable of exciting four different kinds of linearly polarized waves by four independent feeding ports across an overlapped frequency band is presented. The four polarizations embrace the x and y polarized waves, which have broadside patterns, and the thetas and phi-polarized waves, which have conical patterns. The antenna can perform as a dual-polarized antenna for pattern dive... View full abstract»

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  • Development and testing of a 10 GHz phased-array cylindrical-antenna transmitting system incorporating a least-squares radiation-pattern synthesis technique

    Publication Year: 2008, Page(s):80 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6525 KB) | HTML iconHTML

    This research presents the development and testing procedures for an experimental phased-array cylindrical-antenna transmitting system, operating at 10 GHz. The antenna-element excitation phases are set at the intermediate-frequency stage, and are determined by using a least-squares radiation-pattern synthesis technique. The antenna-element excitation amplitudes are taken to be equal and fixed. Th... View full abstract»

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  • Accuracy Analyses of Synthesized-Reference-Wave Holography for Determining Antenna Radiation Characteristics

    Publication Year: 2008, Page(s):89 - 98
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3768 KB) | HTML iconHTML

    Synthesized-reference-Wave holographic techniques offer relatively simple and cost-effective measurements of antenna radiation characteristics, and reconstruction of complex aperture fields using near-field intensity-pattern measurements. These methods allow utilization of the advantages of the methods for probe compensation for near-field amplitude and phase measurements for planar and cylindrica... View full abstract»

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  • Chapter News

    Publication Year: 2008, Page(s):100 - 102
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  • A compact MIMO antenna for wireless communication

    Publication Year: 2008, Page(s):104 - 107
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2306 KB) | HTML iconHTML

    This paper presents the design of a 2.65 GHz MIMO antenna with three equilateral triangular microstrip patches as the antenna elements. The wide-beam characteristics of a triangular-patch antenna, combined with the high gain of each antenna element, improve the SNR and interference rejection of the MIMO system. Through the analysis of mutual coupling and correlation between each pair of antenna po... View full abstract»

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  • Reflector Rim and Feed Considerations for Simple Switched-Beam Antenna Prototype

    Publication Year: 2008, Page(s):108 - 113
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3534 KB) | HTML iconHTML

    A simple, optimized, and easily constructed reflector-rim geometry for protyping purposes is presented as a substitute for the more cumbersome elliptical rim. The design procedure for the switched-beam antenna studied is also described. The elliptical rim shape is approximate by cutting a circular rim with six straight lines. The circular rim is first cut along two symmetrically placed parallel li... View full abstract»

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  • Comments on "Measuring the impedance of balanced antennas by an s-parameter method"

    Publication Year: 2008, Page(s):113 - 114
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3534 KB) | HTML iconHTML

    This paper presents a measurement procedure for determining the impedance of balanced antennas by an S-parameter method. 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