1. Ulaby, F. T., R. K. Moore, and A. K. Fung, Microwave Remote Sensing: Active and Passive, Vol. I, Artech House, 1981.
2. James, Y. Y., et al., "An X-band SAR satellite payload design with low cost approach for disasters management," 2015 IEEE 5th APSAR, 15568731, 2015.
3. Natele, A., P. Berardino, C. Esposito, and S. Perna, "Airborne SAR for high resolution imaging," 2017 Joint Urban Remote Sensing Event (JURSE), 16868028, 2017.
4. Sri Sumantyo, J. T., "Development of circularly polarized Synthetic Aperture Radar onboard Unmanned Aerial Vehicle (CP-SAR UAV)," 2012 IEEE IGARSS, 13133238, 2012.
5. Wang, N., Y. Li, Y. Bu, and J. Chen, "SAR sensor employment planning for tactical aircraft," 2010 The 2nd ICCAE, 11259605, 2010.
6. Yang, H., L. Teng, Y. Huang, J. Yang, and X. Yang, "Multi-spotlight balloon SAR: An interesting microwave remote sensing mission for distributed monitoring," 2013 IEEE IGARSS, 14059446, 2014.
7. Osanai, Y., J. T. Sri Sumantyo, and Z. Baharuddin, "Development of spaceborne antenna for circularly polarized SAR using Kevlar honeycomb core," 2015 IEEE 5th Asia-Pacific Conference on APSAR, 15558266, 2015.
8. Anter, Y. M., M. A. Henry, and G. C. McCormick, "Circular polarization for remote sensing of precipitation: Polarization diversity work at the National Research Council of Canada," IEEE Antennas and Propagation Magazine, Vol. 34, No. 6, 1345-1354, 1989.
9. Sri Sumantyo, J. T., H. Wakabayashi, A. Iwasaki, F. Takahashi, H. Ohmae, H. Watanabe, R. Tateishi, F. Nishio, M. Baharuddin, and P. R. Akbar, "Development of circularly polarized synthetic aperture radar onboard microsatellite (muSAT CP-SAR)," PIERS Proceedings, 382-385, Beijing, China, Mar. 23–27, 2009.
10. Sri Sumantyo, J. T., "Development of Circularly Polarized Synthetic Aperture Radar (CP-SAR) onboard small satellite," PIERS Proceedings, 334-341, Marrakesh, Morocco, Mar. 20–23, 2011.
11. Kurniawan, F., J. T. Sri Sumantyo, G. S. Prabowo, and A. Munir, "Wide bandwidth left-handed circularly polarized printed antenna with crescent slot," 2017 Progress In Electromagnetics Research Symposium (PIERS), 1047-1050, St Petersburg, Russia, May 22–25, 2017.
12. Ghali, H. A. and T. A. Moselhy, "Broad-banda and cirularly polarized space-filling-based slot antennas," IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 6, Jun. 2005.
doi:10.1109/TMTT.2005.848843
13. Taher, H. and R. Farrell, "Broadband high gain SIW cavity square slot antenna for X-band applications," Antennas and Propagation Conference (LAPC), Loughborough, 2016.
14. Jamlos, M. F., T. Bin Abdul Rahman, M. R. Kamarudin, M. T. Ali, M. Nor Md Tan, and P. Saad, "The gain effects of air gap quadratic aperture-coupled microstrip antenna array," PIERS Proceedings, 462-465, Cambridge, USA, Jul. 5–8, 2010.
15. Ali, M. T., H. Jaafar, S. Subahir, and A. L. Yusof, "Gain enhancement of air substrates at 5.8 GHz for microstrip antenna array," Electromagnetic Compatibility, Vol. 18, No. 1, 477-480, 2012.
16. Raut, R. and K. Talandage, "Bandwidth and gain enhancement of rectangular MSA by using parasitic patch and capacitive feeding technique for wideband application," International Conference on Microwave, Optical and Communcation Engineering, IIT Bhubaneswar, India, Dec. 2015.
17. Ta, S. X. and T. K. Nguyuen, "AR bandwidth and gain enhancements of patch antenna using single dielectric superstrate," IEEE Electronics Letters, Vol. 53, No. 15, 2017.
doi:10.1049/el.2017.1676
18. Dai, Y. L., et al., "A novel compact ultra-wideband metamaterial-based microstrip antenna," IMWS-AMP, 2016.