Asymmetrical coupled transmission line modelling of grounded ferrite slab and electronic beam scanning by a slot antenna in a ferrite slab

Author

Aydin, O. ; Hizal, A.

Author_Institution

Dept. of Electr. & Electron. Eng., Middle East Tech. Univ., Ankara, Turkey

fYear

1993

fDate

June 28 1993-July 2 1993

Firstpage

372

Abstract

The radiation characteristics of a slot antenna in a ground plane covered by a ferrite slab which is magnetized perpendicularly by a DC magnetic field are investigated. This structure has a beam steering feature controlled by a DC bias field. Fourier-transformed field representations and asymmetric coupled transmission line modeling are used to analyze this structure. Far fields are evaluated by the method of steepest descents. Numerical results show that, by such a conformal and planar antenna beam steering and beam shaping can be practically controlled by the applied DC field.<>

Keywords

Fourier transforms; antenna radiation patterns; conformal antennas; ferrite waveguides; high-frequency transmission lines; slot antennas; DC magnetic field; asymmetric coupled transmission line modeling; beam steering; conformal antenna; electronic beam scanning; ferrite slab; ground plane; method of steepest descents; planar antenna; radiation characteristics; slot antenna; Beam steering; Coupled mode analysis; Couplings; Ferrites; Magnetic analysis; Magnetic fields; Planar transmission lines; Slabs; Slot antennas; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1993. AP-S. Digest

Conference_Location

Ann Arbor, MI, USA

Print_ISBN

0-7803-1246-5

Type

conf

DOI

10.1109/APS.1993.385328

Filename

385328