Impact of Coated Ground-Plane Edge Diffractions on Amplitude Patterns of Circular Apertures

Author

Aboserwal, Nafati A. ; Balanis, Constantine A. ; Birtcher, Craig R.

Author_Institution

Sch. of Electr., Comput. & Energy Eng., Arizona State Univ., Tempe, AZ, USA

Volume

14

fYear

2015

fDate

2015

Firstpage

221

Lastpage

224

Abstract

The impact of finite dielectric-covered ground-plane edge diffractions on the amplitude patterns of circular apertures is investigated. The model is based on the Geometrical Optics (GO) and the Uniform Theory of Diffraction (UTD) for an impedance wedge. The circular aperture antenna is mounted on square and circular finite ground planes that are coated with a thin lossy dielectric layer. The predictions based on the GO/UTD model are validated by comparisons to experimental results and simulated data.

Keywords

aperture antennas; coatings; dielectric materials; geometrical optics; geometrical theory of diffraction; GO; UTD; circular aperture amplitude pattern; circular aperture antenna; circular finite ground plane; finite dielectric-covered ground-plane edge diffraction; geometrical optics; impedance wedge; square finite ground plane; thin lossy dielectric coating layer; uniform theory of diffraction; Aperture antennas; Dielectrics; Diffraction; Impedance; Surface impedance; Surface waves; Coated aperture antenna; diffraction; geometrical optics; impedance wedge; surface waves;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2360193

Filename

6910230