Affiliation:
1. İZMİR BAKIRÇAY ÜNİVERSİTESİ
Abstract
A hybrid method is proposed for the frequency analysis of rounded metallic objects inductively loaded in rectangular waveguides. The proposed method combines the efficiency of the generalized scattering matrix method (GSM) and the flexibility of the method of moments (MoM) and the fact that fields cannot exist inside perfect electric conductors. Metallic discontinuities are modelled as a dielectric medium with extreme conductivity and the volume is emptied except the surrounding area. The proposed method is tested against several structures including a band-pass filter composed of metallic rods and an arbitrarily shaped discontinuity. The accuracy of the method is compared to commercial software based on the finite element method. The proposed method is exclusively competent for the frequency analysis of rounded or arbitrarily shaped metallic discontinuities.
Publisher
Sakarya University Journal of Science
Reference12 articles.
1. Cameron RJ, Kudsia CM, Mansour RR. Microwave Filters for Communication Systems. Hoboken, NJ, USA: John Wiley & Sons, Ltd. Inc.; 2018.
2. Schwinger J, Saxon DS. Discontinuities in Waveguides - Notes on Lectures by Julian Schwinger. New York, NY: Gordon and Breach Science Publishers; 1968.
3. Chung-I G. Hsu and H. A. Auda, "Multiple Dielectric Posts in a Rectangular Waveguide," in IEEE Transactions on Microwave Theory and Techniques, vol. 34, no. 8, pp. 883-891, Aug 1986.
4. M. Guglielmi, G. Gheri, M. Calamia and G. Pelosi, "Rigorous multimode network numerical representation of inductive step," in IEEE Transactions on Microwave Theory and Techniques, vol. 42, no. 2, pp. 317-326, Feb. 1994.
5. F. Arndt et al., "Fast CAD and optimization of waveguide components and aperture antennas by hybrid MM/FE/MoM/FD methods-state-of-the-art and recent advances," in IEEE Transactions on Microwave Theory and Techniques, vol. 52, no. 1, pp. 292-305, Jan. 2004.