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Wednesday, May 20, 2020 | History

3 edition of Nonprincipal plane scattering of flat plates and pattern control of horn antennas found in the catalog.

Nonprincipal plane scattering of flat plates and pattern control of horn antennas

Constantine A. Balanis

Nonprincipal plane scattering of flat plates and pattern control of horn antennas

semiannual report

by Constantine A. Balanis

  • 6 Want to read
  • 21 Currently reading

Published by Dept. of Electrical and Computer Engineering, Arizona State University, National Aeronautics and Space Administration, Langley Research Center, National Technical Information Service in Tempe, AZ, Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Antenna radiation patterns.,
  • Flat plates.,
  • Horn antennas.,
  • Radar cross sections.,
  • Radar scattering.

  • Edition Notes

    Statementpart A, Constantine A. Balanis and Lesley A. Polka ; part B, Constantine A. Balanis and Kefeng Liu.
    SeriesNASA contractor report -- NASA CR-184691.
    ContributionsPolka, Lesley A., Liu, Kʻo-feng., Langley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15407806M

    The book is organized around three main topic areas: The propagation, reflection, and transmission of plane waves, and the analysis and design of multilayer films. Waveguiding systems, including metallic, dielectric, and surface waveguides, transmission lines, impedance matching, and S-parameters. Metal Plate Lenses p. Metal Plate Lens with Flat Front Face: Constrained Focusing in the H-Plane p. Metal Plate Lens with Flat Front Face: Unconstrained Focusing in the E-Plane p. The Bifocal Metal Plate Lens with Two Curved Surfaces p. The Bifocal Metal Plate Lens with One Curved Surface p. Scanning Aberrations and.

    A standard gain horn operating in the X-band was measured in a spherical near-field range using the LiNbO3 probe as the near-field probe. The results are compared to computed data for said horn. An additional flat– plate, slotted array antenna operating in the X-band was also measured.   In discussions of principal plane patterns or even antenna patterns, you will frequently encounter the terms azimuth plane pattern and elevation plane term azimuth is commonly found in reference to "the horizon" or "the horizontal" whereas the term elevation commonly refers to "the vertical". When used to describe antenna patterns, these terms assume that the antenna is mounted .

    Novel Electromagnetic Metamaterials Broadband Negligible Loss Metamaterials. Lining the interior walls of a rectangular horn antenna with a low-index metamaterial sets up the appropriate electromagnetic boundary conditions to create a tapered aperture field distribution, which radiates with lower sidelobes and backlobes, as shown by the following 3D radiation patterns for C-band horns. Start studying Ch. 3: Plate Tectonics Section 1 & 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools.


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Nonprincipal plane scattering of flat plates and pattern control of horn antennas by Constantine A. Balanis Download PDF EPUB FB2

Patterns of rectangular waveguides [7] and horn antennas [8]. Because of the nature of the GTII diffraction coefficient, their equivalent currents are limited to scattering predlction on the Keller cone. Despite this limitation, Sikta predicts nonpriiicipal plane scattering from flat plates using these equivalent currents.

Using the geometrical theory of diffraction, the traditional method of high frequency scattering analysis, the prediction of the radar cross section of a perfectly conducting, flat, rectangular plate is limited to principal planes. Part A of this report predicts the radar cross section in nonprincipal planes using the method of equivalent : Constantine A.

Balanis, Lesley A. Polka, Kefeng Liu. Nonprincipal-plane scattering from flat plates: Second-order and corner diffraction and pattern control of horn antennasAuthor: Constantine A. Balanis. Nonprincipal-plane scattering from flat plates: Second-order and corner diffraction and pattern control of horn antennas Item Preview remove-circle Several high-frequency models for nonprincipal-plane scattering from a rectangular, perfectly conducting plate are examined.

Two methods, the Method of Equivalent Currents and corner diffraction. Nonprincipal-plane scattering from flat plates: Second-order and corner diffraction and pattern control of horn antennas. By Constantine A. Balanis. Abstract. Several high-frequency models for nonprincipal-plane scattering from a rectangular, perfectly conducting plate are examined.

Two methods, the Method of Equivalent Currents and corner Author: Constantine A. Balanis. NONPRINCIPAL-PLANE SCATTERING FROM FLAT PLATES SECOND-ORDER AND CORNER DIFFRACTION AND PATTERN CONTROL OF HORN ANTENNAS Semiannual Progress Report PART A _" Constantine A.

Balanis and Lesley A. Polka February I, - J / PART B / Constantine A. Balanis and Kefeng Liu February I, - J Telecommunications Research Center. Using the geometrical theory of diffraction, the traditional method of high frequency scattering analysis, the prediction of the radar cross section of a perfectly conducting, flat, rectangular plate is limited to principal planes.

Part A of this report predicts the radar cross section in nonprincipal planes using the method of equivalent currents. Part B: Pattern control of horn antennas.

Article. Jun ; Constantine Balanis. Nonprincipal plane scattering of flat plates and pattern control of horn antennas. Citing article. Nonprincipal plane scattering of flat plates and pattern control of horn antennas [microform]: semiannu Antenna pattern control using impedance surfaces [microform]: semiannual progress report, Ma Feasibility study of optically transparent microstrip patch antenna [microform] / Rainee N.

Simons and R. Get this from a library. Nonprincipal plane scattering of flat plates and pattern control of horn antennas: semiannual report. [Constantine A Balanis; Lesley A. Get this from a library. Nonprincipal-plane scattering from flat plates: second-order and corner diffraction and pattern control of horn antennas: semiannual.

Lesley A. Polka. Arizona State Nonprincipal plane scattering of flat plates and pattern control of horn antennas Non-principal plane scattering from perfectly conducting, flat, rectangular. [5] It should be noted that a 2‐D approach can be used for the calculation of the E‐plane radiation pattern in such a rectangular horn, since the illumination in this plane is completely constant [Stutzman and Thiele, ].In this way, three basic possible field contributions at this point can be considered, namely, the direct ray (r), the ray diffracted at Q 1 (r 1), and the ray Cited by: 1.

Novel domain decomposition techniques for parallel computation and efficient simulation of large-scale problems, such as phased-array antennas and photonic crystals Along with a great many examples, The Finite Element Method in Electromagnetics is an ideal book for engineering students as well as for professionals in the field.

Full text of "Plane-wave scattering-matrix theory of antennas and antenna-antenna interactions" See other formats. () Uniform diffraction coefficient for electromagnetic scattering by flat and curved plates.

IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Cited by:   Proc. SPIERadar Sensor Technology XXII, (5 July ); doi: / These sources are an approximation found from the guided wave field arriving at the horn's aperture. Smaller beamwidths and larger directivities can be expected for horns with larger cross-section Figure 11 Common electromagnetic horn antennas: (a) E- plane sectoral horn, (b) H-plane sectoral horn, (c) pyramidal horn and (d) conical by: 2.

Antennas for communication systems fall into two broad categories depending on the degree to which the radiation is confined. Microwave radio relay and satellite communications use pencil beam antennas, where the radiation is confined to one narrow beam of energy, Figure Mobile communications are more likely to require antennas with omni-directional patterns in the horizontal plane and.

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The invention relates to radio ultra high frequency (UHF), namely the waveguide-slot line antennas and arrays of them scanning the beam in the transverse to the lines of the plane, and can be used in radio systems, including systems, air traffic control, communications, radar, radio navigation based on stationary and moving objects.Real antennas are diffe rent, however, and do not have an ideal radiation distribution.

Energy varies with angular displacement and losses occur due to sidelobes. How ever, if we can measure the pattern, and determin e the beamwidth we can use two (or more) ideal antenna mod els to approximate a real antenna pattern as shown in Figure 3.Radiation Pattern Beam Solid Angle and Directivity Effective Aperture The Half-Wave Dipole Aperture Antennas Horn Antennas Conical horn antennas Pyramidal horn antennas The Parabolic Reflector The Offset Feed Double-Reflector Antennas