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Broadband Characterization of Circularly Polarized Waveguide Antennas Using L-Shaped Probe

  • Fukusako, Takeshi (Department of Computer Science and Electrical Engineering, Kumamoto University)
  • Received : 2016.12.21
  • Accepted : 2017.01.17
  • Published : 2017.01.31

Abstract

This paper introduces a technique to obtain the broadband characteristics of circularly polarized antennas using an L-shaped probe. A waveguide antenna is suitable for obtaining high gain and handling convenience in some applications; however, the asymmetrical structure of the L-shaped probe results in cross-polarization and frequency dependence on the field distribution of higher-order modes (HOM). In addition to the basic characteristics of a waveguide antenna with an L-shaped probe, the author discusses some techniques to reduce the HOM and cross-polarization. As a result, the 3-dB axial ratio (AR) is obtained with the fundamental mode even when the frequency is expanded to the region for HOM of TM. This reduction is mainly due to the cutoff structure to the TM mode around the short wall of the waveguide. Furthermore, some aperture modification techniques can reduce the cross-polarization in a wide range of angles in the radiation pattern. Such techniques and their mechanisms are discussed in this paper. The obtained performance shows that the proposed antennas have a wide range of angles of 3-dB AR in the radiation pattern, broadband characteristics in impedance and AR, and low variation in group velocity.

Keywords

References

  1. H. Mott, Polarization in Antennas and Radar, New York, NY: Wiley, 1986.
  2. W. L. Stutzman, Polarization in Electromagnetic Systems, Boston, MA: Artech House, 1992.
  3. D. Pozar and D. H. Schaubert, Microstrip Antennas: The Analysis and Design of Microstrip Antennas and Arrays, Piscataway, NJ: IEEE Press, 1995.
  4. H. A. Wheeler, "A helical antenna for circular polarization," Proceedings of the IRE, vol. 35, no. 12, pp. 1484-1488, 1947. https://doi.org/10.1109/JRPROC.1947.234573
  5. J. D. Kraus, "The helical antenna," Proceedings of the IRE, vol. 37, no. 3, pp. 263-272, 1949. https://doi.org/10.1109/JRPROC.1949.231279
  6. J. D. Dyson, "The equiangular spiral antenna," IRE Transactions on Antennas and Propagation, vol. 7, no. 2, pp. 181-187, 1959. https://doi.org/10.1109/TAP.1959.1144653
  7. J. A. Kaiser, "The Archimedean two-wire spiral antenna," IRE Transactions on Antennas and Propagation, vol. 8, no. 3, pp. 312-323, 1960. https://doi.org/10.1109/TAP.1960.1144840
  8. M. S. Wheeler, "On the radiation from several regions in spiral antennas," IRE Transactions on Antennas and Propagation, vol. 9, no. 1, pp. 100-102, 1961. https://doi.org/10.1109/TAP.1961.1144950
  9. A. E. C. Tan, M. Y. Chia, and K. Rambabu, "Time domain characterization of circularly polarized ultrawideband array," IEEE Transactions on Antennas and Propagation, vol. 58, no. 11, pp. 3524-3531, 2010. https://doi.org/10.1109/TAP.2010.2071369
  10. F. S. Chang, K. L. Wong, and T. W. Chiou, "Lowcost broadband circularly polarized patch antenna," IEEE Transactions on Antennas and Propagation, vol. 51, no. 10, pp. 3006-3009, 2003. https://doi.org/10.1109/TAP.2003.818010
  11. W. K. Lo, J. L. Hu, C. H. Chan, and K. M. Luk, "Lshaped probe-feed circularly polarized microstrip patch antenna with a cross slot," Microwave and Optical Technology Letters, vol. 25, no. 4, pp. 251-253, 2000. https://doi.org/10.1002/(SICI)1098-2760(20000520)25:4<251::AID-MOP7>3.0.CO;2-H
  12. K. L. Chung and A. S. Mohan, "A systematic design method to obtain broadband characteristics for singlyfed electromagnetically coupled patch antennas for circular polarization," IEEE Transactions on Antennas and Propagation, vol. 51, no. 12, pp. 3239-3248, 2003. https://doi.org/10.1109/TAP.2003.820949
  13. D. Qu, L. Shafai, and A. Foroozesh, "Improving microstrip patch antenna performance using EBG substrates," IEE Proceedings-Microwaves, Antennas and Propagation, vol. 153, no. 6, pp. 558-563, 2006.
  14. F. Yang and Y. Rahmat-Samii, "A low profile single dipole antenna radiating circularly polarized waves," IEEE Transactions on Antennas and Propagation, vol. 53, no. 9, pp. 3083-3086, 2005. https://doi.org/10.1109/TAP.2005.854536
  15. T. Nakamura and T. Fukusako, "Broadband design of circularly polarized microstrip antenna using artificial ground structure with rectangular unit cells," IEEE Transactions on Antennas and Propagation, vol. 59, no. 6, pp. 2103-2110, 2011. https://doi.org/10.1109/TAP.2011.2143656
  16. S. Maruyama and T. Fukusako, "An interpretative study on circularly polarized patch antenna using artificial ground structure," IEEE Transactions on Antennas and Propagation, vol. 62, no. 11, pp. 5919-5924, 2014. https://doi.org/10.1109/TAP.2014.2357431
  17. T. Fukusako, K. Okuhata, K. Yanagawa, and N. Mita, "Generation of circular polarization using rectangular waveguide with L-type probe," IEICE Transactions on Communications, vol. 86B, no. 7, pp. 2246-2249, 2003.
  18. T. Fukusako and L. Shafai, "Circularly polarized broadband antenna with L-shaped probe and wide slot," in Proceedings of 12th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) and Canadian Radio Sciences (URSI/CNC), Montreal, Canada, 2006, pp. 445-448.
  19. S. L. S. Yang, A. A. Kishk, and K. F. Lee, "Wideband circularly polarized antenna with L-shaped slot," IEEE Transactions on Antennas and Propagation, vol. 56, no. 6, pp. 1780-1783, 2008. https://doi.org/10.1109/TAP.2008.923340
  20. L. Y. Tseng and T. Y. Han, "Microstrip-fed circular slot antenna for circular polarization," Microwave and Optical Technology Letters, vol. 50, no. 4, pp. 1056-1058, 2008. https://doi.org/10.1002/mop.23290
  21. J. S. Row and S. W. Wu, "Circularly polarized wide slot antenna with a parasitic patch," IEEE Transactions on Antennas and Propagation, vol. 56, no. 6, pp. 2826-2832, 2008. https://doi.org/10.1109/TAP.2008.928769
  22. S. Yamaura and T. Fukusako, "Bandwidth enhancement of circularly polarized waveguide antenna using L-shaped probe," in Proceedings of 2011 International Symposium on Antennas and Propagation (ISAP2011), Jeju, Korea, 2011.
  23. S. Yamaura and T. Fukusako, "Reduction of cross polarization in higher frequency for circularly polarized broadband antenna with L-shaped probe and parabolic short wall," IEICE Communications Express, vol. 2, no. 5, pp. 180-185, 2013. https://doi.org/10.1587/comex.2.180
  24. T. Fukusako, N. Noguchi, and S. Yamaura, "Bandwidth enhancement of circular polarization generated from circular waveguide and L-shaped probe," in Proceedings of 2013 IEEE International Workshop on Electromagnetics: Application and Student Innovation Competition (iWEM2013), Hong Kong, 2013, pp. 5-8.
  25. R. Yamauchi and T. Fukusako, "A broadband circularly polarized waveguide antenna design for low crosspolarization," IEICE Transactions on Communications, vol. 99B, no. 10, pp. 2187-2194, 2016.

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