1. Sze, J. Y. and C. C. Chang, "Circularly polarized square slot antenna with a pair of inverted-L ground strips," IEEE Antennas Wireless Propag. Lett., Vol. 7, 149-151, 2008.
doi:10.1109/LAWP.2008.921341
2. Yang, W. W., J. Y. Zhou, Z. Q. Yu, and L. S. Li, "Single-fed low profile broadband circularly polarized stacked patch antenna," IEEE Trans. Antennas Propag., Vol. 62, No. 10, 5406-5410, Oct. 2014.
doi:10.1109/TAP.2014.2344657
3. Ding, K., C. Gao, D. Qu, and Q. Yin, "Compact broadband circularly polarized antenna with parasitic patches," IEEE Trans. Antennas Propag., Vol. 65, No. 9, 4854-4857, Sep. 2017.
doi:10.1109/TAP.2017.2723938
4. Baik, J. W., T. H. Lee, and S. Pyo, "Broadband circularly polarized crossed dipole with parasitic loop resonators and its arrays," IEEE Trans. Antennas Propag., Vol. 59, No. 1, 80-88, Jan. 2011.
doi:10.1109/TAP.2010.2090463
5. Ta, S. X. and I. Park, "Compact wideband circularly polarized patch antenna array using metasurface," IEEE Antennas Wireless Propag. Lett., Vol. 16, 1932-1936, 2017.
doi:10.1109/LAWP.2017.2689161
6. Narbudowicz, A., A., X. L. Bao, and M. J. Ammann, "Dual circularly-polarized patch antenna using even and odd feed-line modes," IEEE Trans. Antennas Propag., Vol. 61, No. 9, 4828-4831, Sep. 2013.
doi:10.1109/TAP.2013.2269471
7. Khan, M., Z. C. Yang, and K. Warnick, "Dual-circular-polarized high-efficiency antenna for Ku-band satellite communication," IEEE Antennas Wireless Propag. Lett., Vol. 13, 1624-1627, 2014.
doi:10.1109/LAWP.2014.2345701
8. Kumar, K., S. Dwari, and M. K. Mandal, "Broadband dual circularly polarized substrate integrated waveguide antenna," IEEE Antennas Wireless Propag. Lett., Vol. 16, 2971-2974, 2017.
doi:10.1109/LAWP.2017.2756093
9. Jin, C., R. Li, A. Alphones, and X. Bao, "Quarter-mode substrate integrated waveguide and its application to antenna design," IEEE Trans. Antennas Propag., Vol. 61, No. 6, 2921-2928, Jun. 2013.
doi:10.1109/TAP.2013.2250238
10. Cai, Y., Y. Zhang, Z. Qian, W. Cao, and S. Shi, "Compact wideband dual circularly polarized substrate integrated waveguide horn antenna," IEEE Trans. Antennas Propag., Vol. 64, No. 7, 3184-3188, Feb. 2016.
doi:10.1109/TAP.2016.2554627