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2005 IEEE Antennas and Propagation Society International Symposium

3-8 July 2005

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  • [Cover]

    Publication Year: 2005, Page(s): C1
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  • [Title page]

    Publication Year: 2005, Page(s): i
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  • Copyright page

    Publication Year: 2005, Page(s): ii
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  • Messages

    Publication Year: 2005, Page(s): iii
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  • Conference committee

    Publication Year: 2005, Page(s): iv
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  • Contributors

    Publication Year: 2005, Page(s): v
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  • Conference committee

    Publication Year: 2005, Page(s): vi
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  • [Society related material]

    Publication Year: 2005, Page(s): vii
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  • Award

    Publication Year: 2005, Page(s): viii
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  • [Society related material]

    Publication Year: 2005, Page(s):ix - x
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  • Award winners

    Publication Year: 2005, Page(s): x
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  • Student paper

    Publication Year: 2005, Page(s):xii - xiii
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  • Table of contents

    Publication Year: 2005, Page(s): xv
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  • Panel sessions and discussions

    Publication Year: 2005, Page(s): 1
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  • The effects of source and load impedance on radiation efficiency and diversity gain of two parallel dipoles

    Publication Year: 2005, Page(s):2 - 5 vol. 4B
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB) | HTML iconHTML

    The embedded element patterns of two parallel half-wavelength dipoles are calculated for various source impedances and dipole spacings. The radiation efficiency, correlation and effective diversity gains are shown to vary with source impedances. With 50Ω source impedance, the results compare well to those obtained from measurements in a reverberation chamber. The maximum effective diversity ... View full abstract»

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  • Estimation of coupling, element factor, and phase center of antenna arrays

    Publication Year: 2005, Page(s):6 - 9 vol. 4B
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB) | HTML iconHTML

    A method for joint estimation of the coupling matrix, element factor, and phase center of an array from calibration data is proposed. Our simulation results for an 8 element array show that optimal compensation for an adaptive antenna is only achieved if all parameters are properly estimated. View full abstract»

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  • An efficient, fully-planar cavity backed module for smart array antennas

    Publication Year: 2005, Page(s):10 - 13 vol. 4B
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1072 KB) | HTML iconHTML

    We present a cavity-backed patch antenna with enhanced bandwidth and good efficiency which is assembled in a multilayer fully planar structure. The single element represents a basic block that can be replicated in a modular configuration to design array antennas implementing beam scanning or more general "smart" functionalities. To do that, each element has to be provided by a phase shifter that c... View full abstract»

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  • On the polarization diversity gain using the ORIOL antenna in fading environments

    Publication Year: 2005, Page(s):14 - 17 vol. 4B
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (816 KB) | HTML iconHTML

    This paper presents a new reconfigurable radiating structure that exploits polarization diversity from a single-element antenna. Simulations on the polarization diversity gain have been carried out for indoor and outdoor cells. The results show that the proposed diversity combining scheme, although simple, can in fact provide considerable improvements in the selection diversity gain when used toge... View full abstract»

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  • A compact low coupling orthogonal bi-polarized multi-antenna for MIMO channel measurements

    Publication Year: 2005, Page(s):18 - 21 vol. 4B
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB) | HTML iconHTML

    A compact low mutual coupling multi-antenna with two orthogonal dipole antennas and integrated baluns is proposed for MIMO channel measurements in this paper. The phase centers of the two printed antennas are compact to distinguish the space fading in small scale in the channel measurements. The two printed antennas are arranged without intersection of the conductors except at the ground plate to ... View full abstract»

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  • Panel sessions and discussions

    Publication Year: 2005, Page(s): 22
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  • Novel ESPAR antenna

    Publication Year: 2005, Page(s):23 - 26 vol. 4B
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB) | HTML iconHTML

    A novel ESPAR (electronically steerable passive array radiator) antenna has been proposed. The antenna aperture is a planar array composed of the microstrip patch antenna (MSPA). The MSPA is a stacked circular patch that generates a circular polarized wave over a wide frequency band. Variable reactance values set for maximizing the output SINR are globally searched by direct search. The validity o... View full abstract»

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  • Modal-expansion analysis of electrically steerable passive array radiators (ESPAR)

    Publication Year: 2005, Page(s):27 - 30 vol. 4B
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1008 KB) | HTML iconHTML

    The modal-expansion method has been used for analyzing electrically steerable passive array radiators (ESPAR) driven by a gap source. A simple model of a four-element ESPAR antenna has been studied and its S-parameter results are in good agreement with those by HFSS. A designed seven-monopole ESPAR antenna has been discussed and simulation results have shown that it can be used to steer its radiat... View full abstract»

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  • A novel low-cost millimeter-wave beam-steering system

    Publication Year: 2005, Page(s):31 - 34 vol. 4B
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB) | HTML iconHTML

    An affordable beam steering system based on a microwave lens and a matrix of focal plane arrays has been fabricated and measured. It was shown that a high scan resolution and a narrow beam width can be achieved by using both interleaved and partially overlapped feed arrays, making it a good candidate for many applications. View full abstract»

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  • Multiple beam system with circular arrays

    Publication Year: 2005, Page(s):35 - 38 vol. 4B
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB) | HTML iconHTML

    The switched beam antenna, a smart antenna technology, consists of an array of antennas, a beamforming network and a switching matrix. It may be used to generate n beams to improve the carrier to interference ratio (CIR) and the reuse of frequency in cellular systems, increasing system capacity. This paper describes simplified hardware and software techniques to improve antenna parameters such as:... View full abstract»

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  • Effect of antenna element pattern on antenna pattern control of array antenna

    Publication Year: 2005, Page(s):39 - 42 vol. 4B
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    There are some problems when spatial control schemes such as adaptive arrays and multi-input multi-output (MIMO) systems are applied to mobile terminals because they utilize several antenna elements on minute terminals. An analysis and evaluation of the effect of antenna element patterns on antenna pattern control of an array antenna is presented in this paper. The maximal ratio combining method i... View full abstract»

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