1. Boudaghi, H., M. Azarmanesh, and M. Mehranpour, "A frequency-reconfigurable monopole antenna using switchable slotted ground structure," IEEE Antennas Wireless Propag. Lett., Vol. 11, 655-658, 2012.
doi:10.1109/LAWP.2012.2204030
2. Anagnostou, D. E. and A. A. Gheethan, "A coplanar reconfigurable folded slot antenna without bias network for WLAN applications," IEEE Antennas Wireless Propag. Lett., Vol. 8, 1057-1060, 2009.
doi:10.1109/LAWP.2009.2031989
3. Gheethan, A. A. and D. E. Anagnostou, "Broadband and dual-band coplanar folded-slot antennas (CFSAs)," IEEE Antennas Propag. Mag., Vol. 53, No. 1, 80-89, Feb. 2011.
doi:10.1109/MAP.2011.5773572
4. Boti, M., L. Dussopt, and J. M. Laheurte, "Circularly polarised antenna with switchable polarisation sense," Electron. Lett., Vol. 36, 1518-1519, Aug. 31, 2000.
5. Kim, B., B. Pan, S. Nikolaou, Y.-S. Kim, J. Papapolymerou, and M. M. Tentzeris, "A novel single-feed circular microstrip antenna with reconfigurable polarization capability," IEEE Trans. Antennas Propag., Vol. 56, No. 3, 630-638, Mar. 2008.
doi:10.1109/TAP.2008.916894
6. Nikolaou, S., R. Bairavasubramanian, C. Lugo, I. Carrasquillo, D. C. Thompson, G. E. Ponchak, J. Papapolymerou, and M. M. Tentzeris, "Pattern and frequency reconfigurable annular slot antenna using PIN diodes," IEEE Trans. Antennas Propag., Vol. 54, No. 2, 439-449, Feb. 2006.
doi:10.1109/TAP.2005.863398
7. Mak, K. M. and K. M. Luk, "A circularly polarized antenna with wide axial ratio beamwidth," IEEE Trans. Antennas Propag., Vol. 57, No. 10, 3309-3312, Oct. 2009.
8. Jou, C., J. W. Wu, and C. J. Wang, "Novel broadband monopole antennas with dual-band circular polarization," IEEE Trans. Antennas Propag., Vol. 57, No. 4, 1027-1034, Apr. 2009.
doi:10.1109/TAP.2009.2015827
9. Tsai, J.-F. and J.-S. Row, "Reconfigurable square-ring microstrip antenna," IEEE Trans. Antennas Propag., Vol. 61, No. 5, 2857-2860, May 2013.
doi:10.1109/TAP.2013.2244554
10. Sung, Y. J., T. U. Jang, and Y. S. Kim, "A reconfigurable microstrip antenna for switchable polarization," IEEE Microw. Wireless Compon. Lett., Vol. 14, 534-536, Nov. 2004.
11. Li, W.-M., B. Liu, and H.-W. Zhao, "The U-shaped structure in dual-band circularly polized slot antenna design," IEEE Antennas Wireless Propag. Lett., Vol. 13, 447-450, 2014.
doi:10.1109/LAWP.2014.2306918
12. Sung, Y., "Dual-band circularly polarized pentagonal slot antenna," IEEE Antennas Wireless Propag. Lett., Vol. 10, 259-261, 2011.
doi:10.1109/LAWP.2011.2129551
13. Wadell, B. C., Transmission Line Design Handbook, Artech House, Norwood, MA, USA, 1991.
14. Chen, C.-H. and E. K. N. Yung, "A novel unidirectional dual-band circularly-polarized patch antenna," IEEE Trans. Antennas Propag., Vol. 59, No. 8, 3052-3057, Aug. 2011.
doi:10.1109/TAP.2011.2158961