Frequency-selective reflection and transmission by a periodic dielectric layer

Author

Bertoni, Henry L. ; Cheo, Li-Hsiang S. ; Tamir, Theodor

Author_Institution

Dept.of Electr. Eng. & Comput. Sci., Polytech. Univ., Brooklyn, NY, USA

Volume

37

Issue

1

fYear

1989

fDate

1/1/1989 12:00:00 AM

Firstpage

78

Lastpage

83

Abstract

The feasibility of using a periodic dielectric layer, composed of alternating bars having dielectric constants ε₁ and ε₂, as a dichroic surface at millimeter-wave frequencies is examined. For oblique incidence, it is found that total transmission and total reflection can be obtained at different frequencies for proper choices of ε₁ and ε₂ and the geometric parameters. The frequencies of total reflection and transmission can be estimated from wave phenomena occurring in a layer of uniform dielectric constant equal to the average value in the periodic layers. For some of the frequencies of total transmission, the bandwidth for 90% transmission is found to be 40%. The bandwidth for 90% reflection is always found to be much narrower, the greatest value obtained being 2.5%

Keywords

dichroism; dielectric materials; electromagnetic wave reflection; electromagnetic wave transmission; MM wave; bandwidth; dichroic surface; dielectric constants; frequency selective reflection; frequency selective transmission; geometric parameters; millimeter-wave frequencies; periodic dielectric layer; total reflection; total transmission; wave phenomena; Bandwidth; Bars; Dielectric constant; Dielectric losses; Feeds; Frequency estimation; Frequency selective surfaces; Reflection; Space technology; Surface waves;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.192167

Filename

192167