1. Kilgus, C., "Resonant quadrifilar helix," IEEE Transactions on Antennas and Propagation, Vol. 17, No. 3, 349-351, 1969.
doi:10.1109/TAP.1969.1139459
2. Amin, M. and R. Cahill, "Compact quadrifilar helix antenna," Electronics Letters, Vol. 41, 672-674, 2005.
doi:10.1049/el:20051176
3. Huang, J. and V. Jamnejad, "A microstrip array feed for land mobile satellite reflector antennas," IEEE Transactions on Antennas and Propagation, Vol. 37, No. 2, 153-158, 1989.
doi:10.1109/8.18701
4. Chebolu, S., S. Dey, R. Mittra, and M. Itoh, "A dual-band stacked microstrip antenna array for mobile satellite applications," Antennas and Propagation Society International Symposium 1995, AP-S Digest, Vol. 1, 598-601, 1995.
doi:10.1109/APS.1995.530090
5. Wu, J. Y., J. S. Row, and K. L. Wong, "A compact dual-band microstrip patch antenna suitable for DCS/GPS operations," Microwave and Optical Technology Letters, Vol. 29, No. 6, 410-412, 2001.
doi:10.1002/mop.1193
6. Guo, Y. X., L. Bian, and X. Q. Shi, "Broadband circularly polarized annular-ring microstrip antenna," IEEE Transactions on Antennas and Propagation, Vol. 57, No. 8, 2474-2477, 2009.
7. Zhou, Y., S. Koulouridis, G. Kizitas, and J. L. Volakis, "A novel 1.5" quadruple antenna for tri-band GPS applications," IEEE Antennas and Wireless Propagation Letters, Vol. 5, 224-227, 2006.
doi:10.1109/LAWP.2006.875282
8. Zhou, Y., C. C. Chen, and J. L. Volakis, "Dual band proximity-fed stacked patch antenna for tri-band GPS applications," IEEE Transactions on Antennas and Propagation, Vol. 55, No. 1, 220-223, 2007.
doi:10.1109/TAP.2006.888476
9. Wang, Z. B., S. J. Fang, S. Q. Fu, and S. W. Lu, "Dual-band probe-fed stacked patch antenna for GNSS applications," IEEE Antennas and Wireless Propagation Letters, Vol. 8, 100-103, 2009.
doi:10.1109/LAWP.2008.2012355
10. Pimenta, M. S., F. Ferrero, R. Staraj, and J. M. Ribero, "Low-pofile circularly polarized GNSS antenna," Microwave and Optical Technology Letters, Vol. 54, No. 12, 2811-2814, 2012.
doi:10.1002/mop.27175
11. Ma, J. P., A. B. Kouki, and R. Landry Jr., "Wideband circularly polarized single probe-fed patch antenna," Microwave and Optical Technology Letters, Vol. 54, No. 8, 1803-1808, 2012.
doi:10.1002/mop.26965
12. Zheng, L. and S. Gao, "Compact dual-band printed square quadrifilar helix antenna for global navigation satellite system receivers," Microwave and Optical Technology Letters, Vol. 53, No. 5, 993-997, 2011.
doi:10.1002/mop.25949
13. Moernaut, G. J. K. and G. A. E. Vandenbosch, "Concept study of a shorted annular patch antenna: Design and fabrication on a conducting cylinder," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 1, 2097-2102, 2011.
doi:10.1109/TAP.2011.2143685
14. Kasabegoudar, V. G. and K. J. Vinoy, "A broadband suspended microstrip antenna for circular polarization," Progress In Electromagnetics Research, Vol. 90, 353-368, 2009.
doi:10.2528/PIER09012901
15. Bao, X. L. and M. J. Ammann, "Comparison of several novel annular-ring microstrip patch antennas for circular polarization," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 11, 1427-1438, 2006.
doi:10.1163/156939306779274336
16. Liu, , W. C. and P. C. Kao, "Design of a probe-fed H-shaped microstrip antenna for circular polarization," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 7, 857-864, 2007.
doi:10.1163/156939307780748986
17. Chang, T. N. and J. H. Jiang, "Enhance gain and bandwidth of circularly polarized microstrip patch antenna using gap-coupled method," Progress In Electromagnetics Research, Vol. 96, 127-139, 2009.
doi:10.2528/PIER09081010
18. Heidari, A. A., M. Heyrani, and M. Nakhkash, "A dual-band circularly polarized stub loaded microstrip patch antenna for GPS applications," Progress In Electromagnetics Research, Vol. 92, 195-208, 2009.
doi:10.2528/PIER09032401
19. Yang, S. S., K.-F. Lee, A. A. Kishk, and K.-M. Luk, "Design and study of wideband single feed circularly polarized microstrip antennas," Progress In Electromagnetics Research, Vol. 80, 45-61, 2008.
doi:10.2528/PIER07110604
20. Wu, G.-L., W. Mu, G. Zhao, and Y.-C. Jiao, "A novel design of dual circularly polarized antenna fed by L-strip," Progress In Electromagnetics Research, Vol. 79, 39-46, 2008.
doi:10.2528/PIER07092001
21. Yu, A., F. Yang, and A. Z. Elsherbeni, "A dual band circularly polarized ring antenna based on composite right and left handed metamaterials," Progress In Electromagnetics Research, Vol. 78, 73-81, 2008.
doi:10.2528/PIER07082902
22. Ansoft High Frequency Structure Simulation (HFSS), ver. 13, , ANSYS, Inc., Canonsburg, PA, 2011.