Radiation from a rectangular waveguide with a lossy flange

Author

Yoshitomi, Kuniaki ; Sharobim, Hadi R.

Author_Institution

Dept. of Comput. Sci. & Commun. Eng., Kyushu Univ., Fukuoka, Japan

Volume

42

Issue

10

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

1398

Lastpage

1403

Abstract

The radiation from a rectangular waveguide with a lossy flange coating is studied both analytically and experimentally. An analytic method using Fourier analysis and an impedance boundary condition is proposed. The experiment was performed using a flange covered with a rubber ferrite sheet at an X-band frequency. The numerical and measured results agree well and show that the lossy flange improves the E-plane radiation pattern and the crosspolar radiation. A boresight gain drop of about 2 db is predicted theoretically and measured experimentally

Keywords

Fourier analysis; antenna radiation patterns; antenna theory; boundary-value problems; rectangular waveguides; waveguide antennas; waveguide theory; E-plane radiation pattern; Fourier analysis; X-band frequency; boresight gain drop; crosspolar radiation; impedance boundary condition; lossy flange coating; rectangular waveguide; rubber ferrite sheet; Boundary conditions; Coatings; Ferrites; Flanges; Frequency; Gain measurement; Impedance; Loss measurement; Rectangular waveguides; Rubber;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.320746

Filename

320746