ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
권호 표지
DOI QR코드

DOI QR Code

Bandwidth Enhancement of Circularly Polarized Dielectric Resonator Antenna

  • Sun, Ru-Ying (Department of Electrical Engineering, the School of Automobile Engineering, Linyi University)
  • Received : 2014.05.24
  • Accepted : 2014.09.29
  • Published : 2015.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

Axial-ratio (AR) bandwidth enhancement is achieved for a circularly polarized (CP) cylindrical dielectric resonator antenna (DRA) using a wideband hybrid coupler (WHC) combined with dual probe feed. The presented WHC, comprised of a Wilkinson power divider and a wideband $90^{\circ}$ shifter, delivers good characteristics in terms of 3 dB power splitting and consistent $90^{\circ}$ (${\pm}5^{\circ}$) phase shifting over a wide bandwidth. In turn, the proposed CP DRA, for the employment of the WHC, in place of conventional designs, provides a significant enhancement on AR bandwidth and impedance matching. The antenna prototype with the WHC exhibits a 3 dB AR bandwidth of 48.66%, an impedance bandwidth of 52.5% for voltage standing wave ratio (VSWR) ${\leq}2$, and a bandwidth of 44.66% for a gain of no less than 3 dBi. Experiments demonstrate that the proposed WHC is suitable for broadband CP DRA design.

Keywords

References

  1. S.A. Long, M.W. McAllister, and L.C. Shen, "The Resonant Cylindrical Dielectric Cavity Antenna," IEEE Trans. Antennas Propag., vol. 31, no. 3, May 1983, pp. 406-412. https://doi.org/10.1109/TAP.1983.1143080
  2. K.W. Leung, E.H. Lim, and X.S. Fang, "Dielectric Resonator Antennas: From the Basic to the Aesthetic," Proc. IEEE, vol. 100, no. 7, July 2012, pp. 2181-2193. https://doi.org/10.1109/JPROC.2012.2187872
  3. A. Petosa and A. Ittipiboon, "Dielectric Resonator Antennas: A Historical Review and the Current State of the Art," IEEE Antennas Propag. Mag., vol. 52, no. 5, Oct. 2010, pp. 91-116. https://doi.org/10.1109/MAP.2010.5687510
  4. A. Motevasselian, A. Ellgardt, and B.L.G. Jonsson, "A Circularly Polarized Cylindrical Dielectric Resonator Antenna Using a Helical Exciter," IEEE Trans. Antennas Propag., vol. 61, no. 3, Mar. 2013, pp. 1439-1443. https://doi.org/10.1109/TAP.2012.2229954
  5. A.A. Kishk, "An Elliptic Dielectric Resonator Antenna Designed for Circular Polarization with Single Feed," Microw. Opt. Technol. Lett., vol. 37, no. 6, June 2003, pp. 454-456. https://doi.org/10.1002/mop.10948
  6. K.P. Esselle, "Circularly Polarised Higher-Order Rectangular Dielectric Resonator Antenna," Electron. Lett., vol. 32, no. 3, Feb. 1996, pp. 150-151. https://doi.org/10.1049/el:19960171
  7. G. Almpanis, C. Fumeaux, and R. Vahldieck, "Offset Cross-Slot- Coupled Dielectric Resonator Antenna for Circular Polarization," IEEE Microw. Wireless Compon. Lett., vol. 16, no. 8, Aug. 2006, pp. 461-463. https://doi.org/10.1109/LMWC.2006.879484
  8. R. Chair et al., "Aperture-Fed Wideband Circularly Polarized Rectangular Stair-Shaped Dielectric Resonator Antenna," IEEE Trans. Antennas Propag., vol. 54, no. 4, Apr. 2006, pp. 1350-1352. https://doi.org/10.1109/TAP.2006.872665
  9. M.I. Sulaiman and S.K. Khamas, "A Singly Fed Rectangular Dielectric Resonator Antenna with a Wideband Circular Polarization," IEEE Antennas Wireless Propag. Lett., vol. 9, June 2010, pp. 615-618. https://doi.org/10.1109/LAWP.2010.2054060
  10. S. Jeon, H. Choi, and H. Kim, "Circular Polarization Dielectric Resonator Antenna Excited by Single Loop Feed," ETRI J., vol. 31, no. 1, Feb. 2009, pp. 74-76. https://doi.org/10.4218/etrij.09.0208.0328
  11. M. Simeoni et al., "Plastic-Based Supershaped Dielectric Resonator Antennas for Wide-Band Applications," IEEE Trans. Antennas Propag., vol. 59, no. 12, Dec. 2011, pp. 4820-4825. https://doi.org/10.1109/TAP.2011.2165477
  12. Y.-M. Pan and K.W. Leung, "Wideband Circularly Polarized Dielectric Bird-Nest Antenna with Conical Radiation Pattern," IEEE Trans. Antennas Propag., vol. 61, no. 2, Feb. 2013, pp. 563-570. https://doi.org/10.1109/TAP.2012.2220101
  13. M. Khalily, M.R. Kamarudin, and M.H. Jamaluddin, "A Novel Square Dielectric Resonator Antenna with Two Unequal Inclined Slits for Wideband Circular Polarization," IEEE Antennas Wireless Propag. Lett., vol. 12, Sept. 2013, pp. 1256-1259. https://doi.org/10.1109/LAWP.2013.2283536
  14. R.K. Mongia et al., "Circularly Polarized Dielectric Resonator Antenna," Electron. Lett., vol. 30, no. 17, Aug. 1994, pp. 1361-1362. https://doi.org/10.1049/el:19940968
  15. K.W. Leung et al., "Circular Polarized Dielectric Resonator Antenna Excited by Dual Conformal Strips," Electron. Lett., vol. 36, no. 6, May 2000, pp. 484-486. https://doi.org/10.1049/el:20000453
  16. K.-W. Khoo, Y.-X. Guo, and L.C. Ong, "Wideband Circularly Polarized Dielectric Resonator Antenna," IEEE Trans. Antennas Propag., vol. 55, no. 7, July 2007, pp. 1929-1932. https://doi.org/10.1109/TAP.2007.900241
  17. B. Li, C.-X. Hao, and X.-Q. Sheng, "A Dual-Mode Quadrature- Fed Wideband Circularly Polarized Dielectric Resonator Antenna," IEEE Antennas Wireless Propag. Lett., vol. 8, Aug. 2009, pp. 1036-1038. https://doi.org/10.1109/LAWP.2009.2030700
  18. E.H. Lim, K.W. Leung, and X.S. Fang, "The Compact Circularly Polarized Hollow Rectangular Dielectric Resonator Antenna with an Underlaid Quadrature Coupler," IEEE Trans. Antennas Propag., vol. 59, no. 1, Jan. 2011, pp. 288-293. https://doi.org/10.1109/TAP.2010.2090454
  19. X.S. Fang and K.W. Leung, "Linear-/Circular-Polarization Designs of Dual-/Wide-Band Cylindrical Dielectric Resonator Antennas," IEEE Trans. Antennas Propag., vol. 60, no. 6, June 2012, pp. 2662-2671. https://doi.org/10.1109/TAP.2012.2194682
  20. D.M. Pozar, "Power Dividers and Directional Couplers," Microw. Eng., 4th ed., Hoboken, NJ, USA: John Wiley & Sons, 2012, pp. 363-367.
  21. A.A. Kishk, "Performance of Planar Four-Element Array of Single-Fed Circularly Polarized Dielectric Resonator Antenna," Microw. Opt. Technol. Lett., vol. 38, no. 5, Sept. 2003, pp. 381-384. https://doi.org/10.1002/mop.11066
  22. S.-Y. Eom and H.-K. Park, "New Switched-Network Phase Shifter with Broadband Characteristics," Microw. Opt. Technol. Lett., vol. 38, no. 4, Aug. 2003, pp. 255-257. https://doi.org/10.1002/mop.11030

Cited by

  1. Circular feeding network for circular polarisation reconfigurable antennas vol.55, pp.12, 2019, https://doi.org/10.1049/el.2019.0920