Propagation in an Azimuthally Magnetized Circular Ferrite-Dielectric Waveguide
Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany
Proceedings: EuCAP 2009
Pages: 5Language: englishTyp: PDF
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Authors:
Georgiev, Georgi Nikolov (Faculty of Mathematics and Informatics, University of Veliko Tirnovo "St. Cyril and St. Methodius", 5000 Veliko Tirnovo, Bulgaria)
Georgieva–Grosse, Mariana Nikolova (Meterstrasse 4, 70839 Gerlingen, Germany)
Abstract:
The propagation problem for normal TE0n modes in a circular waveguide, containing coaxially positioned dielectric cylinder and azimuthally magnetized ferrite toroid, is solved by real cylindrical and complex confluent hypergeometric functions. The existence of certain positive real numbers (called L numbers), connected with the positive purely imaginary zeros of the structure’s characteristic equation, is established. As a result, the phase characteristics for both signs of ferrite magnetization turn out to be finite, restricted between the cutoff frequencies and special envelope curves, determined by the L numbers.