Efficient Design of Waveguide Filters Reducing Modal Interference through Cross-Shaped Slots

  • Kahng Sungtek (Dept. of Information and Telecommunication Engineering, University of Incheon)
  • 발행 : 2005.03.01

초록

In this paper, a new method is suggested to improve the frequency responses of dual-mode waveguide-filters that employ cross-shaped slots. In accordance with this method, regarding one cross-shaped slot between two cavities, the horizontal(vertical) mode in one cavity can be designed to influence far less the vertical(horizontal) mode in cavity. Therefore, it improves the overall performances. A 4th-order dual-mode filter is taken as an example and it validates the method.

키워드

참고문헌

  1. G. L. Matthaei et aI., Microwave Filters, Impedance Matching Networks, and Coupling Structures, Dedham, MA: Artech House Books, 1964
  2. A. E. Williams, 'A four-cavity elliptic waveguide filter', IEEE Trans. on Microwave Theory and Technique, vol. 18, no. 12, pp. 1109-1114, Dec. 1970 https://doi.org/10.1109/TMTT.1970.1127419
  3. A. E. Atia, A. E. Williams, ''Narrow-bandpass waveguide filters', IEEE Trans. on Microwave Theory and Technique, vol. 20, no. 4, pp. 258-265, Apr. 1972 https://doi.org/10.1109/TMTT.1972.1127732
  4. G. Pfitzenmaier, 'Synthesis and realization of narrow-band canonical microwave bandpass filters exhibiting linear phase and transmission zeros', IEEE Trans. on Microwave Theory and Technique, vol. 30, no. 9, pp. 1300-1311, Sep. 1982 https://doi.org/10.1109/TMTT.1982.1131252
  5. K. -L. Wu, 'An optimal circular-waveguide dual-mode filter without tuning screws', IEEE Trans. on Microwave Theory and Technique, vol. 47, no. 3, pp. 271-276, Mar. 1999 https://doi.org/10.1109/22.750222
  6. L. Accatino et aI., 'A four-pole dual-mode elliptic filter realized in circular cavity without screws', IEEE Trans. on Microwave Theory and Technique, vol. 44, no. 12, pp. 2680-2687, Dec. 1996 https://doi.org/10.1109/22.554629
  7. Ji-Fuh Liang et aI., 'Dual-mode dielectric or airfilled rectangular waveguide filters', IEEE Trans. on Microwave Theory and Technique, vol. 42, no. 7, pp. 1330-1336, Jul. 1994 https://doi.org/10.1109/22.299726
  8. R. Vahldieck et aI., 'Mode-matching analysis of circular-ridged waveguide discontinuities', IEEE Trans. on Microwave Theory and Technique, vol. 46, no. 2, pp. 191-195, Feb. 1998 https://doi.org/10.1109/22.660987
  9. F. Alessandri et aI., 'A full-wave cad tool for waveguide components using a high-speed direct optimizer', IEEE Trans. on Microwave Theory and Technique, vol. 43, no. 9, pp. 2046-2052, Sep. 1995 https://doi.org/10.1109/22.414539
  10. S. Amari, J. Bornemann, and R. Vahldieck, 'Fast and accurate analysis of waveguide filters by the coupled-integral-equations technique', IEEE trans. on microwave theory and technique, vol. 45, no. 9, pp. 1611-1618, Sep. 1997 https://doi.org/10.1109/22.622929
  11. J. Bornemann et aI., Waveguide Components for Antenna Feed Systems, Nordwood, MA: Artech House Books, 1993
  12. S. Kahng et aI., 'A dual-mode narrow-band channel filter and group-delay equalizer for aKa-band satellite transponder', ETRI Journal, vol. 25, no. 5, pp. 379-386, Oct. 2003 https://doi.org/10.4218/etrij.03.0102.0007
  13. N. Marcuvitz Ed., Waveguide Handbook, New York, McGraw-Hili Book Company, 1951
  14. McDonald, 'Simple approximations for the longitudinal magnetic polarizabilities of some small apertures', IEEE Trans. MTT, vol. 36, no. 7, pp. 1141-1144, Jul. 1988 https://doi.org/10.1109/22.3648