PROPAGATION PROPERTIES AND SCATTERING PARAMETERS OF INHOMOGENEOUSLY LOADED RECTANGULAR WAVEGUIDES

Öz

In this study mode matching technique is used to obtain scattering parameter representations of waveguides loaded inhomogeneously with lossless dielectrics in the cross-sectional direction. The accuracy of our numerical solutions are assessed by comparing our results both with measured data and also, whenever available, with the results reported in the literature. Numerical results are presented to display the dependence of the scattering parameters on the electrical properties and geometrical dimensions of such structures.

Anahtar Kelimeler

• Propagation, scattering parameters, inhomogeneous waveguides

Kaynakça

1. R. E. Collin, Field Theory of Guided Waves, The Institute of Electrical and Electronics Engineers, Inc., New York, 1991.
2. P. H. Vartanian, W. P. Ayres, A. L. Helgesson, “Propagation in dielectric slab loaded rectangular waveguides,” IRE Trans. Microwave Theory Tech., 1957.
3. R. Seckelmann, “ Propagation of TE modes in dielectric loaded waveguides”, IEEE Trans. Microwave Theory Tech., vol. MTT-14, No. 11, pp. 518-527 , Nov. 1966.
4. K. F. Casey, “ On inhomegeneously filled rectangular waveguides”, IEEE Trans. Microwave Theory Tech., pp. 566-567 , Aug.1973.
5. F. E. Gardiol, “ Higher-order modes in dielectrically loaded rectangular waveguides”, IEEE Trans. Microwave Theory Tech., vol. MTT-16, No. 11, pp. 919-924 , Nov. 1968.
6. S. Yoshikado, I. Taniguchi, “ Microwave complex conductivity of a square post in rectangular waveguide”, IEEE Trans. Microwave Theory Tech., vol. MTT-37, No. 6, pp. 984-992, June, 1989.
7. J. Baker-Jarvis., E. J. Vanzura, W. A. Kissick, “ Improved technique for determining complex permittivity with the transmission/reflection method”, IEEE Trans. Microwave Theory Tech., vol. MTT-38, No. 8, pp. 1096-1103, Aug. 1990.
8. J. M. Jarem, J. B Johnson, W. S. Albritton, “Measuring the permittivity and permeability of a sample at Ka band using a partially filled waveguide”, IEEE Trans. Microwave Theory Tech., vol. MTT-43, No. 12, pp. 2654-2667, Dec. 1995.

9. J. M. Catala-Civera, A. J. Canos, F. L. Peneranda-Foix, E. L. Davo, “ Accurate determination of the complex permittivity of materials with transmission reflection measurements in partially filled rectangular waveguides”, IEEE Trans. Microwave Theory Tech., vol. MTT-51, No. 1, pp. 16-24, Jan. 2003.
10. K. Siakavara, J. N. Sahalos, “ The discontinuity problem of a rectangular dielectric post in rectangular waveguide”, IEEE Trans. Microwave Theory Tech., vol. MTT-39, No. 9, pp. 1617-1622, Sep. 1991.
11. J. Abdulnour, L. Marchildon, “ Scattering by dielectric obstacle in rectangular waveguide”, IEEE Trans. Microwave Theory Tech., vol. MTT-41, No. 11, pp. 1988-1994, Nov. 1993.
12. Y. Leviatan, P. G. Li, A. T. Adams, J. Perini, “Single post inductive obstacle in rectangular waveguide”, IEEE Trans. Microwave Theory Tech., vol. MTT-31, No. 10, pp. 806-812, Oct. 1983.
13. P. G. Li, A. T. Adams, Y. Leviatan, J. Perini,“Multiple post inductive obstacles in rectangular waveguide”, IEEE Trans. Microwave Theory Tech., vol. MTT-32, No. 4, pp. 365-373, April 1984.
14. S. Şimşek, “Propagation properties of inhomogeneously loaded metallic waveguides”, MSc. Thesis., Istanbul Technical University, 2003.
15. M. Sucher, J. Fox, “Handbook of microwave measurements”, Vol. II., Polytechnic Press of the Polytechnic Institute of Brooklyn, 1963.