By Topic

IEEE Antennas and Propagation Magazine

Issue 1 • Date Feb. 1995

Filter Results

Displaying Results 1 - 8 of 8
  • Using the matrix pencil method to estimate the parameters of a sum of complex exponentials

    Publication Year: 1995, Page(s):48 - 55
    Cited by:  Papers (491)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB)

    The approximation of a function by a sum of complex exponentials is a problem that is at least two centuries old. Fundamentally, all techniques discussed in this article proceed from using the same sequence of data samples and vary only, but importantly, in how those samples are used in achieving the parameter estimation. All of these techniques, in other words, seek the same quantitative paramete... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of fabrication imperfections for ground-plane-backed dielectric-resonator antennas

    Publication Year: 1995, Page(s):40 - 47
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    Results of numerical and experimental studies, pertaining to the effect of imperfections such as surface roughness, which could lead to poor mechanical contact between a dielectric resonator and the conducting surfaces on which it resides, are presented. This work simulates the poor-contact effect by introducing air gaps between the dielectric resonator (DR) and the adjacent conducting surfaces. R... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modeling and design of electromagnetically coupled microstrip-patch antennas and antenna arrays

    Publication Year: 1995, Page(s):31 - 39
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    This work is an effort to investigate and derive a simple equivalent-circuit model to represent an electromagnetically coupled microstrip-patch antenna. A simplified theory is developed, based on the broadside-coupled lines and improved-transmission-line methods, to provide for the practical design of such antennas without involving complicated, time-consuming, difficult numerical methods. A numbe... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Microstrip-antenna work at NTH/SINTEF DELAB

    Publication Year: 1995, Page(s):25 - 30
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    This paper gives an overview of the microstrip-antenna work at NTH (Norwegian Institute of Technology) and SINTEF DELAB, in Norway. After a description of the organizations, a brief overview of the early developments in the antenna field at NTH and SINTEF is given. The antenna-measurement facilities and CAD tools available are then described, followed by an overview of the main research activities... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Luneberg-lens update

    Publication Year: 1995, Page(s):76 - 79
    Cited by:  Papers (36)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Some proposed satellite-based mobile communication systems require multibeam systems at millimeter-wave frequencies. This is a primary factor in the renewed interest in Luneberg lenses. Luneberg (1944) lenses prove useful in a variety of antenna and scattering applications. In antenna applications, their chief advantages are an ability to form multiple beams that may point in arbitrary directions,... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • PCs for AP and other EM reflections

    Publication Year: 1995, Page(s):87 - 90
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A FORTRAN subroutine is presented, which accurately determines the effective width of a waveguide and its length, by measuring the resonance frequencies of the cavity made of the same waveguide. This measurement method only necessitates a scalar network analyzer and standard waveguide components View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Site shielding of earth-station antennas

    Publication Year: 1995, Page(s):7 - 24
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1636 KB)

    This paper concerns interference in satellite earth stations, due to microwave links sharing the same frequency band, and its solution by site shielding. The uniform theory of diffraction (UTD) has been used to analyze the near field of a parabolic-reflector antenna. An extension of the UTD, in which the influence of the surface impedance is taken into account, has been applied, to calculate the d... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Review of domain-decomposition methods for the implementation of FEM on massively parallel computers

    Publication Year: 1995, Page(s):93 - 98
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    The finite-element solution of electromagnetic phenomena, involving electrically large and complex structures, is a major challenge, since both accuracy and efficiency are hard to obtain. The authors introduce the different methods for performing the domain decomposition for distributed memory, multiple-instruction multiple-data (MIMD) multiprocessors. In discussing the advantages and disadvantage... View full abstract»

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

Aims & Scope

IEEE Antennas and Propagation Magazine actively solicits feature articles that describe engineering activities taking place in industry, government, and universities

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Mahta Moghaddam