paper 150303143202

Abstract

This paper provides a novel and efficient procedure for the X-band reflectarray antenna design emphasizing on the progressive phase distribution which is required to achieve the planar wave in front of antenna aperture. Detailed theoretical procedure has been provided with mathematical modeling of the required reflection phase from each of the individual reflec- tarray elements. The importance of material properties in reflectarray antenna design has been highlighted and different novel design configurations has been proposed for the unit cell reflec- tarray elements. Scattering parameter measurements and simulated results provide a very close agreement for different slot embedded designs proposed in this work. Two different configurations of mixed rectangular and circular slots embedded patch elements have been investigated. The variation in width of slot in the case of three rectangular slot patch configuration, the measured reflection loss varied from 2.89 dB to 5.60 dB while in the case of mixed rectangular and circular slot configurations, measured reflection loss is varied from 7.90 dB to 5.60 dB by varying the ra- dius of circular slot. Moreover a maximum frequency variation of 2.58 GHz and a dynamic phase range of 345◦ with the variation in slot dimensions have also been demonstrated.

1. Huang, J., "Analysis of microstrip reflectarray antenna for microspacecraft applications," Spacecraft Telecommunications Equipment Section, 42-120, TDA Progress Report, February 15, 1995. Google Scholar

2. Javor, R. D., X. D. Wu, and K. Chang, "Design and performane of microstrip reflectarray antenna," IEEE Trans. Antennas and Propagation, Vol. 43, No. 9, 932-938, 1995.
doi:10.1109/8.410208 Google Scholar

3. Targonski, S. D. and D. M. Pozar, "Analysis and design of a microstrip reflectarrayusing patches of variable size," IEEE AP-S/URSI Symposium, 1820-1823, Seattle, Washington, June 1994.
doi:10.1109/aps.1994.408184 Google Scholar

4. Huang, J. and R. J. Pogorzelski, "Microstrip reflectarray with elements having variable rotation angle," IEEE AP-S Symposium Digest, 1280-1283, April 1993.
doi:10.1109/aps.1997.631800 Google Scholar

5. Ismail, M. Y. and M. Inam, "Performance improvement of reflectarrays based on embedded slots configurations," Progress In Electromagnetics Research C, Vol. 14, 67-78, 2010.
doi:10.2528/pierc10041904 Google Scholar

6. Chahmir, M. R., J. Shaker, M. Cuhai, and A. Sebak, "Reflectarray with variable slots on ground plane," IEE Proc. — Microwaves, Antennas and Propagation, Vol. 150, No. 6, 436-439, 2003. Google Scholar

7. Ismail, M. Y. and M. Inam, "Analysis of design optimization of bandwidth and loss performance of reflectarray antennas based on material properties," Modern Applied Sci. J. CCSE, Vol. 4, No. 1, 28-35, 2010.
doi:10.5539/mas.v4n1p28 Google Scholar

8. Biallowski, M. E. and J. Encinar, "Reflectarray: Potential and challenges," International Conference on Electromagnetics in Advanced Applications, ICEAA, 1050-1053, 2007. Google Scholar

9. Pozar, D. M. and S. D. Targonski, "A shaped-beam microstrip patch reflectarray," IEEE Trans. Antennas and Propagation, Vol. 47, No. 7, 1167-1173, 1999.
doi:10.1109/8.785748 Google Scholar

10. Huang, J. and J. Encinar, Reflectarray Antennas, Wiley, Interscience, 2007. Google Scholar

11. Sze, K. Y. and L. Shafal, "Analysis of phase variation due to varying patch length in a microstrip reflectarray," IEEE Trans. Antennas and Propagation, Vol. 46, No. 7, 1134-1137, 1998.
doi:10.1109/aps.1998.702150 Google Scholar

12. Rajagoapalan, H., S. Xu, and Y. R. Samii, "Reflectarray reflection phase diagnostics," 2011 IEEE International Symposium on Antennas and Propagation (APS/URSI), 1636-1638, Washington, USA, 2011. Google Scholar

13. Tienda, C., J. A. Encinar, E. Carrasco, and M. Arrebola, "Design of dual-reflectarray antenna for beam scanning," Journal of Wireless Networking and Communication, Vol. 2, No. 1, 9-14, 2012.
doi:10.5923/j.jwnc.20120201.03 Google Scholar

14. Carrasco, E., J. A. Encinar, and M. Barba, "Bandwidth improvement in large reflectarrays by using true time delay," IEEE Trans. Antennas and Propagation, Vol. 56, No. 8, 2498-2503, 2008.
doi:10.1109/tap.2008.927559 Google Scholar

15. Rajagopalan, H. and Y. R. Samii, "On the reflection characteristics of a reflectarray element with low-loss and high-loss substrates," IEEE Antennas and Propagation Magazine, Vol. 52, No. 4, 73-89, 2010.
doi:10.1109/map.2010.5638237 Google Scholar

16. Inam, M. and M. Y. Ismail, "Reflection loss and bandwidth performance of X-band infinite reflectarrays: Simulations and measurements," Microwave and Optical Technology Letters, Vol. 53, No. 1, 77-80, 2011.
doi:10.1002/mop.25662 Google Scholar

Muhammad Inam Abbasi

Muhammad Yusof Bin Ismail