1. Volakis, J. L., Antenna Engineering Handbook, 4th Ed., Ch. 11, McGraw-Hill, 2007.
2. James, J. R. and P. S. Hall, Handbook of Microstrip Antennas, Ch. 13, Peregrinus, 1989.
3. Cao, Y., S. Yan, J. Li, and J. Chen, "A pillbox based dual circularly-polarized millimeter-wave multi-beam antenna for future vehicular radar applications," IEEE Trans. Vehicular Technology, Vol. 71, No. 7, 7095-7103, 2022.
doi:10.1109/TVT.2022.3162299
4. Cameron, T. R., A. T. Sutinjo, and M. Okoniewski, "A circularly polarized broadside radiating ``herringbone'' array design with the leaky-wave approach," IEEE Antennas Wireless Propag. Lett., Vol. 9, 826-829, 2010.
doi:10.1109/LAWP.2010.2066950
5. Hirose, K., H. Araya, and H. Nakano, "Microstrip line antennas composed of sequentially rotated loop radiation cells," IEICE Trans., Vol. J88-B, No. 9, 1855-1862, 2005.
6. Hirose, K., M. Nakatsu, and H. Nakano, "A loop antenna with enlarged bandwidth of circular polarization - Its application in a comb-line antenna," Progress In Electromagnetics Research C, Vol. 105, 175-184, 2020.
doi:10.2528/PIERC20071902
7. Harrington, R. F., Field Computation by Moment Methods, Macmillan, 1968.
8. Hirose, K., T. Shibasaki, Y. Yoshida, and H. Nakano, "Ladder antennas for dual circular polarization," IEEE Antennas Wireless Propag. Lett., Vol. 11, 1174-1177, 2012.
doi:10.1109/LAWP.2012.2220751
9. Hirose, K., Y. Tamura, M. Tsugane, and H. Nakano, "Coplanar series-fed spiral antenna arrays for enlarged axial ratio bandwidth," Progress In Electromagnetics Research Letters, Vol. 108, 1-8, 2022.
10. Rocher, M. F., J. H. Herruzo, A. V. Nogueira, and B. B. Clemente, "Single-layer sequential rotation network in gap waveguide for a wideband low-profile circularly polarized array antenna," IEEE Access, Vol. 10, 62157-62163, 2022.
doi:10.1109/ACCESS.2022.3182336
11. Qi, Z., Y. Zhu, and X. Li, "Compact wideband circularly polarized patch antenna array using self-sequential rotation technology," IEEE Antennas Wireless Propag. Lett., Vol. 21, No. 4, 700-704, 2022.
doi:10.1109/LAWP.2022.3142307
12. Ma, R., Z. Jiang, Y. Zhang, X. Wu, T. Yue. W. Hong, and D. H. Werner, "Theory, design, and verification of dual-circularly polarized dual-beam arrays with independent control of polarization: A generalization of sequential rotation arrays," IEEE Trans. Antennas Propag., Vol. 69, No. 3, 1369-1382, 2021.
doi:10.1109/TAP.2020.3016500
13. Nakano, H., T. Oka, K. Hirose, and J. Yamauchi, "Analysis and measurements for improved crank-line antennas," IEEE Trans. Antennas Propag., Vol. 45, No. 7, 1166-1172, 1997.
doi:10.1109/8.596910
14. Mishra, G., S. K. Sharma, and J. S. Chieh, "A high gain series-fed circularly polarized traveling-wave antenna at W-band using a new butterfly radiating element," IEEE Trans. Antennas Propag., Vol. 68, No. 12, 7947-7957, 2020.
doi:10.1109/TAP.2020.3000567
15. Ogurtsov, S. and S. Koziel, "A conformal circularly polarized series-fed microstrip antenna array design," IEEE Trans. Antennas Propag., Vol. 68, No. 2, 873-881, 2020.
doi:10.1109/TAP.2019.2943326
16. Sun, M., N. Liu, L. Zhu, and G. Fu, "Wideband circularly polarized sequentially rotated microstrip antenna array with sequential-phase feeding network," J. of Communications and Information Networks, Vol. 5, No. 3, 350-357, 2020.
doi:10.23919/JCIN.2020.9200898
17. Yan, N., K. Ma, and Y. Luo, "An SISL sequentially rotated feeding circularly polarized stacked patch antenna array," IEEE Trans. Antennas Propag., Vol. 68, No. 3, 2060-2067, 2020.
doi:10.1109/TAP.2019.2957096
