Numerical and experimental analysis of circularly polarized radiating line antennas
Smith, David Wilburn
This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/23001
Description
Title
Numerical and experimental analysis of circularly polarized radiating line antennas
Author(s)
Smith, David Wilburn
Issue Date
1990
Doctoral Committee Chair(s)
Mayes, Paul E.
Department of Study
Electrical Engineering
Discipline
Electrical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Electronics and Electrical
Computer Science
Language
eng
Abstract
This thesis describes progress in the development of low-profile radiating lines for producing circularly polarized radiation. A numerical study of the Annular Sector Radiating Line (ANSERLIN) antenna was undertaken using the surface patch formulation of the electric-field integral equation, and the results were generally consistent with measured data for ANSERLIN antennas. Numerical and experimental results also showed that the design of the transitions on ANSERLIN elements has a significant effect on the radiation patterns. Improved construction techniques for individual ANSERLIN elements and series-fed arrays of such elements are described. In particular, a single-level design is presented in which both the elements and the microstrip feed lines are etched on the same substrate. Numerical and experimental results for high efficiency one-port elements for use in corporate-fed arrays are given. The relative merits and performance limitations of elevated ANSERLIN elements, one-arm spirals, and two-arm spirals are discussed. The two-arm spiral appears to be the most suitable of these elements for use in a moderate bandwidth corporate-fed array. Finally, techniques for the efficient implementation of the surface patch formulation on a vector supercomputer are described. Examples showing vectorization of the matrix fill, the matrix decomposition, and the computation of far fields are given. Performance statistics showing the improvement obtained from vectorization are provided.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
