by University of Michigan, Radiation Laboratory, Dept. of Electrical Engineering and Computer Science, National Aeronautics and Space Administration, National Technical Information Service, distributor in Ann Arbor, Mich, [Washington, D.C, [Springfield, Va .
Written in English
|Statement||Leo C. Kempel, John L. Volakis.|
|Series||[NASA contractor report] -- NASA CR-193409., NASA contractor report -- NASA CR-193409.|
|Contributions||Volakis, John Leonidas, 1956-, United States. National Aeronautics and Space Administration.|
|The Physical Object|
Radiation and Scattering by Cavity-Backed Antennas on a Circular Cylinder. By Leo C. Kempel and John Leonidas Volakis. Publisher: University of Michigan. Radiation Laboratory. Year: OAI identifier: oai: Provided by: Deep Blue at the University of Michigan. Download Author: Leo C. Kempel and John Leonidas Volakis. The finite element-boundary integral method is extended to radiation by cavity-backed structures in an infinite, metallic cylinder. The formulation is used to investigate the effect of cavity size on the radiation pattern for typical circumferentially and axially polarized patch : Leo C. Kempel, John L. Volakis, Randy Sliva. A technique for characterizing and designing complex conformal antennas flush-mounted on a singly-curved surface is presented. This approach is based on the hybrid finite element–boundary integral (FE–BI) method. A related method was proposed in the. Radiation from a cavity-backed circular aperture has been studied extensively due to its practical applications in aperture antennas and electromagnetic compatibility and aperture antennas .
L.C. Kempel and J.L. Volakis, Scattering by cavity-backed antennas on a circular cylinder, IEEE Trans. Antennas Propag. 41 () Google Scholar . In many cases these detrimental effects can be minimized by judiciously locating the antennas. This task is complicated by the large number of systems that are competing for prime locations on, for example, a modern military ship. Circular Cylinder Flat Plate Radiation Pattern “Radiation and scattering by thin-wire structures in a. Cylindrical Radiation Scattering Outline 1 Cylindrical Radiation Sources of Cylindrical Radiation Green’s Function and Far Field Wave Transformations 2 Scattering Scattering from a Circular Cylinder. because one side is either completely enclosed, e.g., the slotted cylinder antenna, or it is desired that the radiation on one side be minimized. In these cases, the influence of the enclosed cavity region on the excitation and impedance of the slot antenna is significant to the antenna design. SLOTTED-WAVEGUIDE ANTENNAS Slotted-waveguide.
Radiation and scattering by cavity-backed antennas on a circular cylinder Scattering by a groove in an impedance plane Scattering by cavity-backed antennas on a zircular cylinder Simulation of thin slot spirals and dual circular)atch antennas using the finite element method _¢ith mixed elements,= Triangular prisms for edge-based vector finite. Conventional radar warning receivers use cavity backed flat spiral antennas. These antennas are broadband and polarization independent (for any linear polarization). However, these antennas may have an unacceptable radar cross section. Problem The scattering mechanisms of a . The radiation characteristics of waveguide antennas located on the surface of a circular cylinder are investigated theoretically and numerically. A reactive impedance structure is used to provide reduced coupling between two antennas on the surface of a cylinder. Using the moment method, a solution to the problem of the radiation of a single and two parallel-plate waveguides located on the. APERTURE ANTENNAS Figure Diffraction mechanisms for an aperture mounted on a ﬁnite size ground plane (diffractions at upper-lower and left-right edges of the ground plane). phase of the ﬁeld on a diffracted ray is assumed to be equal to the product of the optical length of the ray (from some reference point) and the phase constant of the.