volume | PIER Journals

Abstract

A problem of electromagnetic wave diffraction by a longitudinal slot cut in a waveguide wide wall is solved by a generalized method of induced electro-magneto-motive forces (EMMF). The slot radiates in a half-space above a perfectly conducting plane where two vertical impedance monopoles are arbitrarily located. To control electrodynamic characteristics of the radiator, a passive impedance monopole is placed in the waveguide. The paper is aimed at the study of the electrodynamic characteristics of waveguide vibrator-slot structures, analogous to the known Clavin element, with two identical impedance monopoles on both sides of the narrow half-wave slot. The influence of the geometric structure parameters on the directional characteristic of Clavin type element: relative level of sidelobes in the E-plane and the RP width differences in the main polarization plane at 3 dB level was analyzed. It was shown that the directional and energy characteristics of the radiators: radiation and reflection coefficients, antenna directivity, and gain can be varied within wide limits by changing the electrical length and/or distributed surface impedance of the vibrators.

1. Nesterenko, M. V., V. A.Katrich, Yu. M. Penkin, and S. L. Berdnik, Analytical and Hybrid Methods in Theory of Slot-Hole Coupling of Electrodynamic Volumes, Springer Science+Business Media, New York, 2008.
doi:10.1007/978-0-387-76362-0

2. Balanis, C. A. (ed.), Modern Antenna Handbook, John Wiley & Sons, Hoboken, 2008.
doi:10.1002/9780470294154

3. Penkin, Yu. M., V. A. Katrich, M. V. Nesterenko, S. L. Berdnik, and V. M. Dakhov, Electromagnetic Fields Excited in Volumes with Spherical Boundaries, Springer Nature Swizerland AG, Cham, Swizerland, 2019.

4. Nesterenko, M. V., V. A. Katrich, Yu. M. Penkin, V. M. Dakhov, and S. L. Berdnik, Thin Impedance Vibrators. Theory and Applications, Springer Science+Business Media, New York, 2011.

5. King, R. W. P. and G. H. Owyang, "The slot antenna with coupled dipoles," IRE Trans. Antennas Propag., Vol. 8, 136-143, 1960. Google Scholar

6. Butler, C. M. and K. R. Umashankar, "Electromagnetic excitation of a wire through an aperture- perforated conducting screen," IEEE Trans. Antennas Propag., Vol. 24, 456-462, 1976. Google Scholar

7. Naiheng, Y. and R. Harrington, "Electromagnetic coupling to an infinite wire through a slot in a conducting plane," IEEE Trans. Antennas Propag., Vol. 31, 310-316, 1983. Google Scholar

8. Halpern, B. M. and P. E. Mayes, "The monopole slot as a two-port diversity antenna for UHF land-mobile radio systems," IEEE Trans. Vehicular Technology, Vol. 33, 76-83, 1984. Google Scholar

9. His, S. W., R. F. Harrington, and J. R. Mautz, "Electromagnetic coupling to a conducting wire behind an aperture of arbitrary size and shape," IEEE Trans. Antennas Propag., Vol. 33, 581-587, 1985. Google Scholar

10. Lee, Y.-H., D.-H. Hong, and J.-W. Ra, "Waveguide slot antenna with a coupled dipole above the slot," Electronics Letters, Vol. 19, 280-282, 1983. Google Scholar

11. Hirokawa, J., L. Manholm, and P.-S. Kildal, "Analysis of an untilted wire-excited slot in the narrow wall of a rectangular waveguide by including the actual external structure," IEEE Trans. Antennas Propag., Vol. 45, 1038-1044, 1997. Google Scholar

12. Morioka, T., K. Komiyama, and K. Hirasawa, "Effects of a parasitic wire on coupling between two slot antennas," IEICE Trans. Commun., Vol. E84-B, 2597-2603, 2001. Google Scholar

13. Wongsan, R., C. Phongcharoenpanich, M. Krairiksh, and J.-I. Takada, "Impedance characteristic analysis of an axial slot antenna on a sectoral cylindrical cavity excited by a probe using method of moments," IEICE Trans. Fundament., Vol. E86-A, 1364-1373, 2003. Google Scholar

14. Park, S.-H., J. Hirokawa, and M. Ando, "Simple analysis of a slot and a re°ection-canceling post in a rectangular waveguide using only the axial uniform currents on the post surface," IEICE Trans. Commun., Vol. E86-B, 2482-2487, 2003. Google Scholar

15. Kim, K.-C., S. M. Lim, and M. S. Kim, "Reduction of electromagnetic penetration through narrow slots in conducting screen by two parallel wires," IEICE Trans. Commun., Vol. E88-B, 1743-1745, 2005. Google Scholar

16. Lim, K.-S., V.-C. Koo, and T.-S. Lim, "Design, simulation and measurement of a post slot waveguide antenna," J. of Electromagn. Waves and Appl., Vol. 21, No. 12, 1589-1603, 2007. Google Scholar

17. Nesterenko, M. V., V. A. Katrich, Y. M. Penkin, S. L. Berdnik, and V. I. Kijko, "Combined vibrator-slot structures in electrodynamic volumes," Progress In Electromagnetics Research B, Vol. 37, 237-256, 2012. Google Scholar

18. Nesterenko, M. V., V. A. Katrich, D. Y. Penkin, S. L. Berdnik, and V. I. Kijko, "Electromagnetic waves scattering and radiation by vibrator-slot structure in a rectangular waveguide," Progress In Electromagnetics Research M, Vol. 24, 69-84, 2012. Google Scholar

19. Penkin, D. Y., S. L. Berdnik, V. A. Katrich, M. V. Nesterenko, and V. I. Kijko, "Electromagnetic fields excitation by a multielement vibrator-slot structures in coupled electrodynamics volumes," Progress In Electromagnetics Research B, Vol. 49, 235-252, 2013. Google Scholar

20. Berdnik, S. L., V. A. Katrich, M. V. Nesterenko, Y. M. Penkin, and D. Y. Penkin, "Radiation and scattering of electromagnetic waves by a multi-element vibrator-slot structure in a rectangular waveguide," IEEE Trans. Antennas Propag., Vol. 63, 4256-4259, 2015. Google Scholar

21. Clavin, A., D. A. Huebner, and F. J. Kilburg, "An improved element for use in array antennas," IEEE Trans. Antennas Propag., Vol. 22, 521-526, 1974. Google Scholar

22. Clavin, A., "A multimode antenna having equal E- and H-planes," IEEE Trans. Antennas Propag., Vol. 23, 735-737, 1975. Google Scholar

23. Papierz, A. B., S. M. Sanzgiri, and S. R. Laxpati, "Analysis of antenna structure with equal E- and H-plane patterns," Proc. IEE, Vol. 124, 25-30, 1977. Google Scholar

24. Elliott, R. S., "On the mutual admittance between Clavin elements," IEEE Trans. Antennas Propag., Vol. 28, 864-870, 1980. Google Scholar

25. Kominami, M. and K. Rokushima, "Analysis of an antenna composed of arbitrarily located slots and wires," IEEE Trans. Antennas Propag., Vol. 32, 154-158, 1984. Google Scholar

26. Berdnik, S. L., V. A. Katrich, M. V. Nesterenko, Y. M. Penkin Yu. M., and S. V. Pshenichnaya, "Clavin element with impedance monopoles," Proc. of the XX-th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory, Lviv, Ukraine, 61{65, 2015. Google Scholar

27. Berdnik, S. L., N. K. Blinova, V. A. Katrich, M. V. Nesterenko, and Y. M. Penkin, "Spherical antenna with a Clavin radiator," Proc. of the XX-th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory, Lviv, Ukraine, 75-77, 2015. Google Scholar

28. Penkin, Yu. M., V. A. Katrich, and M. V. Nesterenko, "Two-frequency operating mode of antenna arrays with radiators of Clavin type and switching vibrator and slot elements," Progress In Electromagnetics Research M, Vol. 87, 171-178, 2019. Google Scholar

29. Nesterenko, M. V., S. L. Berdnik, V. A. Katrich, and Y. M. Penkin, "Electromagnetic waves excitation by thin impedance vibrators and narrow slots in electrodynamic volumes,", Chapter in book Advanced Electromagnetic Waves, S. O. Bashir (ed.), Chapter 6, 147-176, Rijeka, InTech., 2015. Google Scholar

Dr. Sergey L. Berdnik

Dr. Viktor A. Katrich

Dr. Mikhail Nesterenko

Dr. Yuriy M. Penkin