1. Gao SS, Luo Q, Zhu F (2013) Circularly polarized antennas. John Wiley & Sons, New York
2. Rishani NR (2011) Circularly polarized wearable antenna with EBG for GPS applications. Department of Electrical and Computer Engineering, American University of Beirut, Lebanon
3. Salah M, and Tiwari VN, (2016) “Review of circular polarization techniques for design of microstrip patch antenna,” International conference on recent cognizance in wireless communication & image processing, pp. 663–669
4. Gangwar K, Paras, Gangwar RPS (2014) Metamaterials: characteristics, process and applications. Adv Electr Electron Eng 4(1):97–106
5. S. Zouhdi, S. Ari, and P. Alexey, Metamaterials and plasmonics: fundamentals, modelling, applications, Springer Science & Business Media, USA 2008.