Title :
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
fDate :
June 28 1993-July 2 1993
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;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385328
