Radiation characteristics of a source in a thin substrate mounted over a dielectric medium

Author

Engheta, Nader ; Elachi, Charles

Author_Institution

California Inst. of Technol., Pasadena, CA, USA

Volume

36

Issue

3

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

322

Lastpage

330

Abstract

The radiation pattern of a line source is calculated for the case in which the source is lying on the top or the bottom surface of a lossless dielectric substrate that is mounted on the top of semi-infinite dielectric medium. It is found that in both cases the pattern along the interfaces has a null; that the pattern in the upper semi-infinite medium has a single lobe; and that the pattern in the lower semi-infinite medium has many lobes, the number of which varies with the substrate thickness. In both cases, the power radiated into the lower medium is more than that radiated into the upper medium. Applications of this calculation to remote sensing, microstrip antenna technology, and antenna arrays are discussed

Keywords

antenna radiation patterns; antenna theory; antenna arrays; line source; lossless dielectric substrate; microstrip antenna technology; radiation pattern; remote sensing; semi-infinite dielectric medium; thin substrate; Antenna radiation patterns; Dielectric losses; Dielectric substrates; Dipole antennas; Electromagnetic reflection; Microstrip antenna arrays; Microstrip antennas; Remote sensing; Rough surfaces; Surface roughness;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.192113

Filename

192113