By Topic

2007 Loughborough Antennas and Propagation Conference

Date 2-3 April 2007

Filter Results

Displaying Results 1 - 25 of 93
  • [Front cover]

    Publication Year: 2007, Page(s): C1
    Request permission for commercial reuse | PDF file iconPDF (790 KB)
    Freely Available from IEEE
  • [Title page]

    Publication Year: 2007, Page(s): C2
    Request permission for commercial reuse | PDF file iconPDF (269 KB)
    Freely Available from IEEE
  • [Advertisement]

    Publication Year: 2007, Page(s): nil1
    Request permission for commercial reuse | PDF file iconPDF (520 KB)
    Freely Available from IEEE
  • [Copyright notice]

    Publication Year: 2007, Page(s): nil1
    Request permission for commercial reuse | PDF file iconPDF (520 KB)
    Freely Available from IEEE
  • Welcome Note

    Publication Year: 2007, Page(s): nil2
    Request permission for commercial reuse | PDF file iconPDF (704 KB) | HTML iconHTML
    Freely Available from IEEE
  • Committee

    Publication Year: 2007, Page(s):nil3 - nil4
    Request permission for commercial reuse | PDF file iconPDF (121 KB)
    Freely Available from IEEE
  • Invited Speakers

    Publication Year: 2007, Page(s): nil5
    Request permission for commercial reuse | PDF file iconPDF (642 KB)
    Freely Available from IEEE
  • [Dedication to Professor Jim James (1933-2006)]

    Publication Year: 2007, Page(s): nil6
    Request permission for commercial reuse | PDF file iconPDF (223 KB) | HTML iconHTML
    Freely Available from IEEE
  • Index

    Publication Year: 2007, Page(s):nil7 - nil13
    Request permission for commercial reuse | PDF file iconPDF (133 KB)
    Freely Available from IEEE
  • Exhibitors

    Publication Year: 2007, Page(s): nil14
    Request permission for commercial reuse | PDF file iconPDF (318 KB)
    Freely Available from IEEE
  • Challenges in Antenna Designs and Some Novel Techniques for Meeting Them

    Publication Year: 2007, Page(s):1 - 4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2766 KB) | HTML iconHTML

    In this paper we identify some challenges in antenna designs-both small and large types-that we have recently encountered in the process of designing antennas for personal communication, GPS, UWB, Millimeter waves, BANs (body area networks), sensors, RFID, and other similar applications. The primary challenges in designing small antennas arise from the specifications that are often very demanding ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Periodic Materials & Printed Structures for Miniature Antennas

    Publication Year: 2007, Page(s):5 - 8
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3807 KB) | HTML iconHTML

    Engineered materials, such as new composites, electromagnetic bandgap, and periodic structures have attracted considerable interest in recent years due to their remarkable and unique electromagnetic properties. Among this class of media are the magnetic photonic (MPC) and degenerate band edge (DBE) crystals. These periodic media have the concurrent characteristics of wave slow down and impedance m... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Millimetrewave Antennas- Past, Present and Future

    Publication Year: 2007, Page(s):9 - 12
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5248 KB) | HTML iconHTML

    Millimetrewave systems are becoming increasingly important in many scientific, civil, and military applications because they can provide wider bandwidth for transmitting large amount of data and better resolution in radar systems. However their history goes back to the early days of wireless communications. In this paper we will look at the early millimetrewave experiments of Bose through current/... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Enabling RF/Microwave Devices and Antennas using Negative-Refractive-Index Transmission-Line (NRI-TL) Metamaterials

    Publication Year: 2007, Page(s):13 - 18
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5916 KB) | HTML iconHTML

    Negative-Refractive-Index Transmission-Line (NRI-TL) Metamaterials comprise transmission lines loaded periodically with series capacitors and shunt inductors, such that the phase flow and power flow are contra-directional on the lines. These NRI-TL media exhibit properties that can be utilized for miniaturizing microwave devices and antennas. A compact antenna, power divider and branch-line couple... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • UWB Antennas: From Hype, Promise to Reality

    Publication Year: 2007, Page(s):19 - 22
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4125 KB) | HTML iconHTML

    Five years have passed since federal communications commission (FCC) announced the emission mask for commercial ultra-wideband (UWB) applications in April 2002. In the past 5 years, UWB technology in particular high data-rate wireless communications has made a big progress. With such a rapid development, the UWB antenna R&D has also evolved fast from theoretical study to engineering design as ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Compact Antenna Test Range Based on a Computer-Generated Hologram and Its Use at Submillimeter Wavelengths

    Publication Year: 2007, Page(s):23 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3670 KB) | HTML iconHTML

    Compact antenna test range developed at TKK Helsinki University of Technology utilizes a computer-generated amplitude hologram as the collimating element. Recently we have demonstrated its applicability for testing high-gain antennas at 650 GHz. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Spherical Near-Field Antenna Measurements: A Review of Correction Techniques

    Publication Year: 2007, Page(s):27 - 32
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6253 KB) | HTML iconHTML

    Following an introductory review of spherical near-field scanning measurements, with emphasis on the general applicability of the technique, we present a survey of the various methods to improve measurement accuracy by correcting the acquired data before performing the transform and by special processing of the resulting data following the transform. A post-processing technique recently receiving ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modelling and Visualisation of the Communication Link for UWB Consumer Applications

    Publication Year: 2007, Page(s):33 - 38
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5313 KB) | HTML iconHTML

    This paper aims on visualising of the communication link for UWB consumer electronic applications. It is intended to introduce the aspects involved especially with the integration of the antenna into the chassis of the applications to the designers of the consumer electronic application that are typically not used to rf and antenna terminology. The complete chain of the communication link is model... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Application of Wire Media Layers for Coupling Reduction in Antenna Arrays and Microwave Devices

    Publication Year: 2007, Page(s):39 - 44
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3919 KB) | HTML iconHTML

    Application of wire media for reduction of a mutual coupling of radiating elements is considered. We present a design, which allows for simultaneous decoupling for TM and TE polarizations. We show that the mutual coupling can be reduced by 20 dB for TM polarization and by 7-8 dB for TE polarization. Theoretical estimations are supported with experimental results. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the Use of Metamaterial Surfaces for EBG Antenna Improvements

    Publication Year: 2007, Page(s):45 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4345 KB) | HTML iconHTML

    This paper presents several configurations where frequency selective surfaces are used to improve EBG resonator antennas performances. The different detailed structures are mainly focused on the bandwidth limitation of these antennas which has been addressed in various ways. In addition to a wide band antenna, two structures showing a dual band functioning are presented, of which one moreover poss... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Antenna Possibilities using 2.5D Textured Surfaces

    Publication Year: 2007, Page(s):51 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4427 KB) | HTML iconHTML

    This paper discusses some opportunities which present themselves for antenna applications through the use of textured surface microwave wave PCBs. Such structures exhibit anisotropic surface propagation properties which can be exploited for far-field radiation control in resonant antenna structures as well as in the generation of leaky waves in frequency scanning antennas. In addition we show how ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electrically Small Antennas with Dielectric, Magneto-Dielectric and Metamaterial Loading

    Publication Year: 2007, Page(s):57 - 62
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6235 KB) | HTML iconHTML

    With recent advances in manufacture and study of high dielectric ceramics, magneto-dielectrics and metamaterials, there have been renewed interests in studying electrically small antennas. Prospective features of aforementioned loading schemes have been discussed by various research groups, however, there lacks of a fair comparison in antenna performance taking into consideration of material dispe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Combined Fractal Dipole Wire Antenna

    Publication Year: 2007, Page(s):65 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4194 KB) | HTML iconHTML

    In today's world of expanding wireless communications, there is increasing need for more compact, multiband, and moderate gain antennas for portable communications systems to respond to the great demand for both military and commercial communications systems. Fractal antenna designs can assist in meeting these design requirements. This paper introduces a novel small size and multiband fractal dipo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Direct BPSK Demodulation by Polarization Rotation in the Presence of Channel Distortion

    Publication Year: 2007, Page(s):69 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3752 KB) | HTML iconHTML

    In this paper, we study the bit-error-rate (BER) performance of a novel method of signal detection whereby the signal is modulated by polarization rotation. The method combines two oppositely sensed circularly polarized signals to generate a linearly polarized wave with a spatial tilt angle determined by the phase difference between the two circularly polarized signals. The transmitted linearly po... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Textured Surface Slot Antenna

    Publication Year: 2007, Page(s):73 - 76
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2789 KB) | HTML iconHTML

    In this paper, we provide numerical and experimental verification of the size reduction and polar pattern modification that can be achieved by using a slot excited textured surface antenna as compared to a conventional slot antenna constructed from a flat perfectly conducting metal sheet, PEC. Excitation is provided via a coaxial conductor positioned between a slot etched into the untextured, i.e.... View full abstract»

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