A two-slot array antenna on a concentric sectoral cylindrical cavity excited by a coupling slot is investigated. The electromagnetic fields and Q factors for the first few modes of a concentric sectoral cylindrical cavity are presented. It shows that the appropriate mode for a slot array antenna on a concentric sectoral cylindrical cavity is the TM110 mode. The correlations between each mode distribution and the magnetic field distributions inside the cavity are presented. The antenna design and the parametric study of a two-slot array antenna on a concentric sectoral cylindrical cavity for a single sector are illustrated. Simulated results are validated by measurements. The results provide useful information for the design of a switched-beam slot array antenna on the concentric sectoral cylindrical cavities.
2. Pazoki, R. and J. Rashed-Mohassel, "Bandwidth enhancement of resonant slot array antennas," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 9, 1177-1189, 2007.
3. Lim, K. S., V. C. Koo, and T.-S. Lim, "Design, simulation and measurement of a post slot waveguide antenna," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 12, 1589-1603, 2007.
4. Mondal, M. and A. Chakrabarty, "Resonant length calculation and radiation pattern synthesis of longitudinal slot antenna in rectangular waveguide," Progress In Electromagnetics Research Letters, Vol. 3, 187-195, 2008.
doi:10.2528/PIERL08042204
5. Li, L., C.-H. Liang, and C.-H. Chan, "Waveguide end-slot phased array antenna integrated with electromagnetic bandgap structures," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 2, 161-174, 2007.
doi:10.1163/156939307779378826
6. Zhao, X. W., X. J. Dang, Y. Zhang, and C. H. Liang, "MLFMA analysis of waveguide arrays with narrow-wall slots," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 8, 1063-1078, 2007.
7. Tiwari, A. K., D. R. Poddar, and B. N. Das, "On the equivalent radius of a radiating slot in impedance calculations," Progress In Electromagnetics Research, Vol. 74, 47-56, 2007.
doi:10.2528/PIER07041904
8. Hamid, A.-K. and F. R. Cooray, "Radiation characteristics of a spheroidal slot antenna coated with isorefractive materials," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 12, 1605-1619, 2007.
9. Shin, D. H. and H. J. Eom, "Radiation from narrow circumferential slots on a conducting circular cylinder," IEEE Trans. Antennas Propagat., Vol. 53, No. 6, 2081-2088, June 2005.
doi:10.1109/TAP.2005.848503
10. Ock, J. S. and H. J. Eom, "Radiation of a hertzian dipole in a short-ended conducting circular cylinder with narrow circumferential slots," Progress In Electromagnetics Research Letters, Vol. 2, 11-20, 2008.
doi:10.2528/PIERL07121305
11. Hamid, A. K., "Multi-dielectric loaded axially slotted antenna on circular or elliptic cylinder," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 9, 1259-1271, 2006.
doi:10.1163/156939306777442980
12. Kim, J. H. and H. J. Eom, "Radiation from multiple annular slots on a circular cylindrical cavity," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 1, 47-56, 2007.
doi:10.1163/156939307779391713
13. Wang, J. H. and K. K. Mei, "Theory and analysis of leaky coaxial cables with periodic slots," IEEE Trans. Antennas Propagat., Vol. 49, No. 12, 1723-1732, Dec. 2001.
doi:10.1109/8.982452
14. Kim, D. H. and H. J. Eom, "Mode-matching analysis of axially slotted coaxial cable," IEEE Antennas Wireless Propag. Lett., Vol. 4, 169-171, 2005.
doi:10.1109/LAWP.2005.848384
15. Ahn, C. H., D. W. Yi, and W. S. Park, "Design of a radiated-mode multislot leaky coaxial cable," Microw. Opt. Tech. Lett., Vol. 45, No. 4, 338-342, May 2005.
doi:10.1002/mop.20817
16. Park, J. K., D. H. Shin, J. N. Lee, and H. J. Eom, "A fullwave analysis of a coaxial waveguide slot bridge using the Fourier transform technique," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 2, 143-158, 2006.
doi:10.1163/156939306775777198
17. Shin, D. H. and H. J. Eom, "Radiation of a leaky coaxial cable with narrow transverse slots," IEEE Trans. Antennas Propagat., Vol. 55, No. 1, 107-110, Jan. 2007.
doi:10.1109/TAP.2006.888414
18. Fan, G. X. and J. M. Jin, "Scattering from a cylindrically conformal slotted waveguide array antenna," IEEE Trans. Antennas. and Propagat., Vol. 45, 1150-1159, July 1997.
19. Lin, F. and A. S. Omar, "Segment-sector waveguides," Proc. 1989 IEEE AP-S Int. Symp., 965-968, June 1989.
20. Elsherbeni, A., D. Kajfez, and S. Zeng, "Circular sectoral waveguides," IEEE Antennas and Propagation Magazine, Vol. 33, 20-27, Dec. 1991.
doi:10.1109/74.107352
21. Lue, S. W., S. C. Li, and S. M. Cao, "Slot antenna in the cuved broad wall of a sectoral waveguide," Asia-Pacific Microwave Conference 1992, 401-403, Adelaide, Australia, 1992.
22. Lue, S. W., Y. Zhuang, and S. M. Cao, "The equivalent parameters for the radiating slot on a sectoral waveguide," IEEE Trans. Antennas Propagat., Vol. 42, 1577-1581, Nov. 1994.
doi:10.1109/8.362774
23. Wongsan, R., C. Phongcharoenpanich, M. Krairiksh, and J. Takada, "Impedance characteristic analysis of an axial slot antenna on a sectoral cylindrical cavity excited by a probe using Method of Moments," IEICE Trans. Fundamentals, Vol. E-86A, 1364-1373, June 2003.
24. Pasri, N., C. Phongcharoenpanich, and M. Krairiksh, "Design of a circumferential slot antenna on a sectoral cylindrical cavity excited by a probe," Proc. 2004 IEEE AP-S Int. Symp., 2337-2340, June 2004.
25. Balanis, C. A., Advance Engineering Electromagnetics, John Wiley & Sons, New York, 1989.
26. Miner, G. F., Lines and Electromagnetic Fields for Engineers, Oxford University Press, New York, 1996.
27. Harrington, R. F., Time-Harmonic Electromagnetic Fields, McGraw-Hill, New York, 1985.
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