By Topic

2008 International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials

4-6 March 2008

Filter Results

Displaying Results 1 - 25 of 135
  • [Front cover]

    Publication Year: 2008, Page(s): C1
    Request permission for commercial reuse | PDF file iconPDF (713 KB)
    Freely Available from IEEE
  • [Breaker page]

    Publication Year: 2008, Page(s): i
    Request permission for commercial reuse | PDF file iconPDF (172 KB)
    Freely Available from IEEE
  • Conference Proceedings 2008 IEEE International Workshop on Antenna Technology: Small Antennas and Novel Metamaterials [Copyright notice]

    Publication Year: 2008, Page(s): ii
    Request permission for commercial reuse | PDF file iconPDF (166 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2008, Page(s):iii - xiv
    Request permission for commercial reuse | PDF file iconPDF (301 KB)
    Freely Available from IEEE
  • [Commentary]

    Publication Year: 2008, Page(s):xv - xvi
    Request permission for commercial reuse | PDF file iconPDF (267 KB)
    Freely Available from IEEE
  • [Advertisements]

    Publication Year: 2008, Page(s): xvii
    Request permission for commercial reuse | PDF file iconPDF (209 KB)
    Freely Available from IEEE
  • Contributor listings

    Publication Year: 2008, Page(s):xviii - xix
    Request permission for commercial reuse | PDF file iconPDF (195 KB)
    Freely Available from IEEE
  • Recent Small Antennas for Medical Applications

    Publication Year: 2008, Page(s):1 - 4
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3619 KB) | HTML iconHTML

    This paper describes a few examples of small antennas for medical applications particularly for interstitial and intracavitary microwave hyperthermia. We have demonstrated heating patterns around the coaxial-dipole antenna for the treatment of brain tumor. Then we have shown the investigation of heating performances of the coaxial-slot antenna for treatment of bile duct carcinoma. As a further stu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Diversity in On-Body Communications Channels

    Publication Year: 2008, Page(s):5 - 9
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3136 KB) | HTML iconHTML

    On-body communication channels are used in an increasing number of applications, including headsets and wristwatch controllers for mobile phones, and systems for emergency personnel and for personal medical support. In channels for such systems the movement of the body causes significant fading, in addition to that caused by scattering from the local environment. This can be mitigated using divers... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Broadband Small Antenna for Portable Wireless Application

    Publication Year: 2008, Page(s):10 - 13
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1009 KB) | HTML iconHTML

    A broadband compact antenna is implemented by modifying the full ground plane metamaterial antenna. The strip matching ground is used to enhance the impedance matching by 800% compared to the full ground plane case while maintaining its compact size as 1/10 lambda0 by 12 size of antenna ground plane. Planar inverted F antenna (PIFA) is also known for its compact size and its capability ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • UWB Antennas and Their Applications

    Publication Year: 2008, Page(s):14 - 19
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2632 KB) | HTML iconHTML

    The UWB antennas are proposed for applications of communication systems, various kinds of antenna test ranges, and high resolution microwave imaging. The narrower instantaneous bandwidth of UWB antennas will degrade the performance of the above applications. By using different characteristic of geometries, structures and sizes, good impedance bandwidth and instantaneous bandwidth can be achieved f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Extremely Wide-band, Low-profile BOR-SPR Antenna

    Publication Year: 2008, Page(s):20 - 23
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1173 KB) | HTML iconHTML

    It is well known that a monopole antenna above a ground plane radiates an omni-directional beam around its axis. The height of this monopole can be reduced by using top-loading techniques. One such technique involves attaching a patch to the top of a monopole for use as a microwave antenna. In this case the structure is recognized as a low-profile, center-fed patch antenna. When the antenna height... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Ultra-Wideband Antennas with Miniaturized Size, Reduced Ground Plane Reliance, and Enhanced Diversity

    Publication Year: 2008, Page(s):24 - 27
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2263 KB) | HTML iconHTML

    This paper reports the techniques applied in developing high performance UWB antennas with miniaturized size, reduced ground plane reliance, and enhanced diversity. The fundamental idea about the design with reduced ground plane reliance is first reviewed. Next, the miniaturized antenna design with less ground plane effect is introduced. Last, the antenna which features the small size, less ground... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A study on compact antennas and antenna miniaturization for handsets

    Publication Year: 2008, Page(s):28 - 31
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1734 KB) | HTML iconHTML

    The compact antennas with balanced effect have been introduced with the change of their configuration. These antennas are effective to mitigate the antenna performance degradation due to the human body effect and also have flexible adjustment of antenna impedance and capacity of wideband and multi-resonance characteristics. Second, a downsizing technique of antenna for handset by utilizing a magne... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Compact Ultra-Wideband Antenna with Multiple Stop Bands

    Publication Year: 2008, Page(s):32 - 34
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2349 KB) | HTML iconHTML

    In this paper, some recent research advances in compact ultra-wideband antenna with multiple stop bands for UWB wireless communications or shared for multiple wireless communication systems are reviewed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Bandwidth Limitations and Downsizing Techniques of Ultra-Wideband Antennas

    Publication Year: 2008, Page(s):35 - 38
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3870 KB) | HTML iconHTML

    Wireless broadband communications such as UWB, WiMAX et. al. have been put into services in Japan, in order to realize high-speed transmission systems. Such a system enables to transmit movies from a person to the other person in the winking of an eye. To realize such wireless broadband communications, wideband antennas have been required. This paper describes the bandwidth limitations of ultra-wi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Dual-polarized Magneto-Electric Dipole with Loaded Dielectric Substrate

    Publication Year: 2008, Page(s):39 - 42
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1582 KB) | HTML iconHTML

    A broadband dual-polarized magneto-electric dipole with loaded dielectric substrate suitable for GSM 1800 and GSM 1900 systems have been designed and tested. Dual polarized antenna is popular in wireless communications as it employs diversity technique to combat multi-path fading for enhancing channel capacity. Two pairs of short-circuited patches are fed by four Gamma shaped probes (with the grou... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wideband Circularly Polarized L-shaped Slot Antenna

    Publication Year: 2008, Page(s):43 - 46
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1645 KB) | HTML iconHTML

    A wideband circularly polarized (CP) slot antenna with L-slot and L-shaped feed is designed. Wideband CP is obtained by truncating a corner of the antenna element, and by exciting the L-slot with asymmetric L-shaped feed line. This geometry introduces orthogonal components with quadrature phase difference to excite circularly polarized wave. The antenna attains an overlapped bandwidth (axial ratio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Overview of fast SAR assessment techniques

    Publication Year: 2008, Page(s):47 - 50
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1397 KB) | HTML iconHTML

    Specific absorption rate (SAR) assessment plays a crucial role in the development of small antennas for wireless systems. Indeed, such antennas are generally in close interaction with human body, resulting in exposure safety issues. While the standard procedure remains the reference to ensure compliance with existing norms, various needs for faster SAR measurement have been pushing for the develop... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Three Fast Ways of Measuring Receiver Sensitivity in a Reverberation Chamber

    Publication Year: 2008, Page(s):51 - 54
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1449 KB) | HTML iconHTML

    The traditional way of evaluating receiver sensitivity is to measure the Total Isotropic Sensitivity (TIS) in an anechoic environment. Very few wireless terminals with small antennas are used in an anechoic environment. This paper will describe three alternative methods to measure the receiver sensitivity in a reverberation chamber, each of which can be done in less than 10 minutes which is much f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • To Use or Not to Use the Effective Medium Approach for Designing Performance-Enhanced Small Antennas - That is the Question

    Publication Year: 2008, Page(s):55 - 58
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1579 KB) | HTML iconHTML

    Performance enhancement of small conformal antennas, e.g., microstrip patch antennas (MPA's) is often accomplished by adding a superstrate or a substrate, comprising of artificial dielectrics that are also referred to as metamaterials, especially when the effective parameters differ substantially from those of the constituent media. These embellishments to the MPA are designed to increase its effe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Printed Metamaterials: Antennas Emulating Anisotropic Media

    Publication Year: 2008, Page(s):59 - 62
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3631 KB) | HTML iconHTML

    In this paper, review of degenerate bandedge (DBE) antenna, followed by variations in plane or in volume to realize multimode and wideband configurations is presented. Ferrite and multilayer substrates are also examined to realize the Magnetic Photonic Crystal (MPC) modes to further improve bandwidth and multifunctionality. Of particular interest in this regard is the use of thin magnetic layers w... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Waveguide Antenna Applications of Metamaterials to Leaky-Wave Slotted Waveguide Array

    Publication Year: 2008, Page(s):63 - 66
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (700 KB) | HTML iconHTML

    Effective guided wavelength can be controlled in both negative and positive by metamaterials. Metamaterials are applied to some kinds of slotted waveguide leaky-wave array antenna. First, left-handed waveguide leaky-wave slot array antenna is developed by using perturbation waveguide circuits for phase advance. Beam scanning performance is obtained and the beam direction is controlled by changing ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Validation of Negative Refraction in a Metamaterial Wedge using QPSK Modulated Signals

    Publication Year: 2008, Page(s):67 - 70
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2444 KB) | HTML iconHTML

    The phenomenon of negative refraction in a Metamaterial wedge is known to be relatively narrowband. Here, we first experimentally estimate the negative refraction bandwidth of a Metamaterial wedge using a slab and a series of CW measurements. We subsequently measure the RF bandwidth of the Metamaterial wedge using a series of simple QPSK modulated signals. The measured RF bandwidth correlates well... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Cavity Size Effects on the Performance of Superstrate Folded Dipole Antennas for 60 GHz Applications

    Publication Year: 2008, Page(s):71 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1328 KB) | HTML iconHTML

    This paper describes a cost-effective approach for an off-chip antenna design and construction that would show the potential for its integration with a 60 GHz SiGe chipset, in a low-cost plastic chip-scale packaging technology or silicon carrier based wafer-scale packaging technology. Obtaining the maximum bandwidth-gain product within a given design constrain is the basic challenge for the design... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.