On one approach to creation of dual-band hard horn
DOI:
https://doi.org/10.1109/ICATT.2005.1496923Keywords:
circular waveguide, conical horn, corrugated structure, feed, hard surface, hard hornAbstract
A circular waveguide with longitudinally corrugated wall, in which the grooves are filled with dielectric of alternating epsilon, is considered. The dispersion equation for determining the eigenmode parameters is derived under the assumption of small corrugation period. The waveguide is shown to support the quasi-TEM modes at two different frequencies corresponding to the groove filling at which the hard wall condition is realized. The features of the TEM mode fields are revealed and discussed from the viewpoint of creation of the dual-band hard horn.References
ALY, M.S. Propagation and radiation behaviour of a longitudinally slotted horn with dielectric-filled slots. IEE Proc. H Microwaves, Antennas and Propag., Dec. 1985, v.132, n.7, p.477-479, doi: http://dx.doi.org/10.1049/ip-h-2.1985.0086.
KILDAL, P.-S. Definition of artificially soft and hard surfaces for electromagnetic waves. Electron. Lett., Feb. 1988, v.24, n.3, p.168-170, doi: http://dx.doi.org/10.1049/el:19880112.
KILDAL, P.-S.; LIER, E. Hard horns improve cluster feeds of satellite antennas. Electron. Lett., Apr. 1988, v.24, n.8, p.491-492, doi: http://dx.doi.org/10.1049/el:19880333.
SOTOUDEH, O. Hard horns for cluster-fed multi-beam antennas. Thesis for the Degree of Licentiate of Engineering. Gothenburg, Sweden: Chalmers University of Technology, 2004.
IVANOV, TONI; MORTAZAWI, AMIR. A two-stage spatial amplifier with hard horn feeds. IEEE Microwave and Guided Wave Lett., Feb. 1996, v.6, n.2, p.88-90, doi: http://dx.doi.org/10.1109/75.481998.
LIER, E. Hard waveguide feeds with circular symmetry for aperture efficiency enhancement. Electron. Lett., Feb. 1988, v.24, n.3, p.166-167, doi: http://dx.doi.org/10.1049/el:19880110.
LIER, E. Analysis of soft and hard strip-loaded horns using a circular cylindrical model. IEEE Trans. Antennas Propag., June 1990, v.38, n.6, p.783-793, doi: http://dx.doi.org/10.1109/8.55573.
SKOBELEV, SERGEI; KILDAL, PER-SIMON. Influence of hard corrugated PBG wall design on performance of conical horn antenna. Microwave and Optical Technology Lett., Feb. 2002, v.32, n.4, p.265-268, doi: http://dx.doi.org/10.1002/mop.10149.
SKOBELEV, S.P.; KILDAL, P.-S. Analysis of conical quasi-TEM horn with a hard corrugated section. IEEE Trans. Antennas Propag., Oct. 2003, v.51, n.10, p.2723-2731, doi: http://dx.doi.org/10.1109/TAP.2003.817564.
SKOBELEV, S.P.; KILDAL, P.-S. Analysis of a hard strip-loaded conical horn by the method of generalized scattering matrices. IEEE Trans. Antennas Propag., Oct. 2003, v.51, n.10, p.2918-2925, doi: http://dx.doi.org/10.1109/TAP.2003.817571.
KILDAL, P.-S. Private Communication. October, 2004.
CARPENTER, E. A dual-band corrugated feed horn. IEEE Int. AP-S Symp. Dig., 2-6 June 1980, Quebec, Canada. IEEE, 1980, v.18, p.213-216, doi: http://dx.doi.org/10.1109/APS.1980.1148396.
GHOSH, S.; ADATIA, N.; WATSON, B.K. Hybrid-mode feed for multi-band applications having a dual-depth corrugation boundary. Electron. Lett., Sept. 1982, v.18, n.20, p.860-862, doi: http://dx.doi.org/10.1049/el:19820584.
