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Reconfigurable Circularly Polarized Compact Short Backfire Antenna
Abstract:In this research paper, a slotted coaxial line fed cross dipole excitation structure for short backfire antenna is proposed and developed to achieve reconfigurable circular polarization. The cross dipole, which is fed by the slotted coaxial line, consists of two orthogonal dipoles. The dipoles are mounted on the outer conductor of the coaxial line. A unique technique is developed to generate reconfigurable circular polarization using cross dipole configuration. The sub-reflector is supported by the feed line, thus requiring no extra support. The antenna is developed on elliptical ground plane with dielectric rim making antenna compact. It is demonstrated that cross dipole excited short backfire antenna can achieve voltage standing wave ratio (VSWR) bandwidth of 14.28% for 2:1 VSWR, axial ratio of 0.2 dB with axial ratio (≤ 3dB) bandwidth of 2.14% and a gain of more than 12 dBi. The experimental results for the designed antenna structure are in close agreement with computer simulations.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1083325Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1815
 Driessen, P. F. ,"Gigabit/s indoor wireless systems with directional antennas", IEEE Trans. Commun., Vol. 44, No. 8, pp. 1034-1044, 1996.
 Waterhouse, R. B., Novak, D., Nirmalathas, A., and Lim, C. ,"Broadband printed sectored coverage antennas for millimeter-wave wireless applications", IEEE Trans. Antennas Propag., Vol. 50, No. 1, pp. 12-16, 2002.
 Yang, S., Tan, S. H., and Fu, J. S. ,"Short backfire antennas for wireless LAN applications at millimeter-waves", Proc. IEEE AP-S Int. Symp., pp. 1260-1263, July 2000.
 Vaughan-Nichols, S. J. ,"Achieving wireless broadband with WiMax", Computer, pp. 10-13, June 2004.
 Cherry, S. M. ,"WiMax and Wi-Fi: Separated and unequal", IEEE Spectrum, pp. 19, March 2003.
 Kory, C. K., Lambert, Acosta, R., and Nessel, J. ,"Prototype Antenna Elements for the Next-Generation TDRS Enhanced Multiple-Access Array", IEEE Trans. Antennas Propag., Vol. 50, No. 4, pp. 72-83, 2008.
 Kory, C. K., Lambert, Acosta, R., and Nessel, J. ,"Prototype antenna elements for the next-generation TDRS enhanced multiple- access array", Proc. IEEE Antennas and Propagation Society International Symposium, pp. 297-300, July 2006.
 Ehrenspeck, H. W. ,"The short-backfire antenna", Proc. IEEE, Vol. 53, No. 6, pp. 1138-1140, 1965.
 Kumar, A., and Hristov, H. D. ,"Microwave Cavity Antennas", Artech House Norwood MA, 1989, pp. 215-386.
 Fujimoto, K., and James, J. R. ,"Mobile Antenna Systems Handbook", Artech House Norwood MA, 2000, 2nd ed., pp. 542-545.
 Iwasaki, H. ,"A circularly polarized small-size microstrip antenna with a cross slot", IEEE Trans. Antennas Propag., Vol. 44, No. 10, pp. 1399- 1401, 1996.
 Huang, C.Y., Wu, J. Y., and Wong, K. L. ,"Cross-slot-coupled microstrip antenna and dielectric resonator antenna for circular polarization", IEEE Trans. Antennas Propag., Vol. 47, No. 4, pp. 605- 609, 1999.
 Al-Jibouri, B. H., Evans, Korolkiewicz, E., Lim, E. G., Sambell, A., and Viasits, T. ,"Cavity model of circularly polarized cross-aperture-coupled microstrip antenna", Pro. IEE Microwave, Antennas & Wave Propag., Vol. 148, No. 3, pp. 147-152, 2001.
 Sievenpiper, D., Hsu, H. P. and Riley, R. M. ,"Low-profile cavitybacked crossed-slot antenna with a single-probe feed designed for 2.34- GHz satellite radio applications", IEEE Trans. Antennas Propag., Vol. 52, No. 3, pp. 873-879, 2004.
 Leong, K. M. K. H., Qing, Y., and Itoh Iwasaki, T. ,"Surface wave enhanced broad band planar antenna for wireless applications", IEEE Microwave Wireless Components Lett., Vol. 11, No. 2, pp. 62-64, 2001.
 Sabatier, C. ,"T-dipole arrays for mobile applications", IEEE Antenna Propag. Mag., Vol. 45, No. 6, pp. 9-26, 2003.
 Thompson R. L., Li, D.: Papapolymerou, J., Laskar, J., and Tentzeris, M. M., "A Circularly Polarized Short Backfire Antenna Excited by an Unbalance-Fed Cross Aperture", IEEE Trans. Antennas Propag., Vol. 54, No.3, pp. 852-859, 2006.
 Keen, K. M. ,"Feeder errors cause antenna circular polarization deterioration", Microwave System News, Vol. 14, No. 5, pp. 102-108, May 1984.
 Ohmori, S., Miura, S., Kameyama, K., and Yoshimura, H. ,"An improvement in electrical characteristics of a short backfire antenna", IEEE Trans. Antennas Propag., Vol. 31, No. 4, pp. 644-646, 1983.
 Chen, Z. N., and Chia, M. Y. W. ,"A center-slot-fed suspended plate antenna", IEEE Trans. Antennas Propag., Vol. 51, No. 4, pp. 1407-1410, 2003.
 Gao, S., Li, L. W., Leong, M. S., and Yeo, T. S. ,"A broad-band dualpolarized microstrip patch antenna with aperture coupling", IEEE Trans. Antennas Propag., Vol. 51, pp. 898-900, 2003.
 Li, R., Thompson, D., Tentzeris, M. M., Laskar, J., and Papopolymerou, J. ,"Development of a Wide-Band Short Backfire Antenna Excited by an Unbalanced-Fed H-Shaped Slot", IEEE Trans. on Antenna sand Propagation, Vol. 52, No. 2, pp. 662-671, 2005.