Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Document formatted into pages; contains xviii, 161 p.; also includes graphics (some col.) Includes bibliographical references (p. 158-161). Available online via OhioLINK's ETD Center

Thesis (M.Eng.(Electronic Engineering))--University of Pretoria, 1992. / Abstract in Afrikaans and English. Includes bibliographical references.

Thesis (M.S. in Electrical and Computer Engineering)--Naval Postgraduate School, June 2009. / Thesis Advisor(s): Janaswamy, Ramakrishna. Second Reader: Neta, Beny. "June 1990." Description based on title screen as viewed on 19 October 2009. DTIC Identifier(s): Planar antennas, antenna arrays, millimeter waves, integrated circuits. Author(s) subject terms: Thesis, word processing, Script, GML, text processing. Includes bibliographical references (p. 124-125). Also available online.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 187-194). Also available via the Internet.

Thesis (Ph.D.)--City University of Hong Kong, 2005. / "Submitted to Department of Electronic Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy" Includes bibliographical references (leaves 152-162)

Thesis (Ph. D.)--Lehigh University, 2000. / Includes vita. Includes bibliographical references (leaves 124-135).

Conductive ink from a printer allows for the fabrication of conductive material with tight tolerances without the cost and time of chemical etching. This paper explores the use of AGIC printable conductive ink on a paper substrate as design tool for antennas as well as classroom use in antenna education. The antenna designs satisfy the requirements of a compact Global Navigation Satellite System (GNSS) antenna while showing a competitive performance within the current market. One best design is shown along with three other structures. These antennas consist of a bowtie cross-dipole over a reflective disc with conductive-ink grounded structures. In addition to the GNSS antennas, a linear elliptical dipole over a reflective disc with conductive grounded structures is presented. This elliptical antenna design attempts to find the maximum impedance bandwidth beyond the GNSS band. The inexpensive nature of conductive ink allows for its use in a classroom to demonstrate antenna behavior as part of antenna education. An inexpensive approach to the patch antenna using conductive ink is described and paired with a system made of off-the-shelf parts. The system is capable of measuring the power of the received signal. The received signal measurement is not as accurate as using a anechoic chamber but pattern details are visible. This is used to demonstrate aspects of the Friis transmission equation such as distance, polarization, radiation pattern shape, and loss.

For a typical microstrip antenna placing the radiating elements and feed lines on one side of the substrate realises the advantages of planar fabrication. It can be shown that the currents in many parts of the feeder circuit have magnitudes comparable with those in the radiators and make a significant contribution to the total radiation. In this thesis the radiation from both the radiators and the feed lines will be examined. The radiation from microstrip was calculated from the current distribution. This method allows the calculation of the radiation from the nominal radiators and the feed circuits. Theoretical and experimental results verifying this approach will be given for examples of relatively low Q resonators on thick, low permittivity substrates required for efficient antennas. Unwanted radiation from the feed circuit could be reduced by the use of coaxial lines below ground or a multiple-layer strip line assembly, but such complications are unattractive. Reduction in unwanted feed line radiation has been investigated by the use of a balanced line feeder, combined with a suitable balun.

No description available.

This study is concerned with the processing of signals received by an array of sensor elements which may range from acoustic transducers in a sonar system to microwave horns in a radar system. The main aim of the work is to devise techniques for resolving the signals arriving from closely spaced sources in order to determine the presence and direction of these sources.