Reflect Array Using Multi Segment Circular Fractal Unit Cell With Isoflux Pattern For C-Band Application

Yıl 2013, Cilt: 3 Sayı: 2, 549 - 551, 01.12.2013

Bahareh Baghani Bajgıran Majid Afsahı

Öz

In this paper with using novel fractal structure which is composed of multi segment circular fractal. A unit cell and then reflectarray
antenna have been designed. The unit cell of reflect array has been designed in 4.4 GHz with 24*24*1 mm3 dimension. The reflectarray is consist
of 400 (20* 20) elements that even element is placed in the locus has been calculated. Maximum gain of antenna is 12.9 dBi.

Kaynakça

• D. G. Berry, R. G. Malech, and W. H. Kennedy, “The reflectarray antenna,” IEEE Trans. Antennas Propag., vol. 11, no. 6, pp. 645–651, Nov. 1963.
• H. R. Phelan, “Spiralphase reflectarray for multitarget radar,” Microwave Journal, vol. 20, pp. 67–73, July 1977.
• J. Huang and J. A. Encinar, Reflectarray Antennas, by Institute of Electrical and Electronics Engineers, John Wiley & Sons, 2008.
• D. M. Pozar, S. D. Targonski, and H. D. Syrigos, “Design of millimeter wave microstrip reflectarrays,” IEEE Trans. Antennas Propag., vol. 45, no. 2, pp. 287–296, Feb. 1997.
• A. Yu, “Microstrip reflectarray antennas: Modeling, design and measurement,” Ph.D. dissertation, Dept. Elect. Eng., Univ. of Mississippi, Oxford, MS, 2010.
• J. A. Encinar and J. A. Zornoza, “Three-layer printed reflectarrays for contoured beam space applications,” IEEE Trans. Antennas Propag., vol. 52, no. 5, pp. 1138–1148, May 2004.
• D. M. Pozar, “Bandwidth of reflectarrays”, Electronics Letters, vol. 39, no. 21, Oct. 2003.
• J. A. Encinar, “Design of two-layer printed reflectarrays using patches of variable size”, IEEE Trans. Antennas Propag., vol. 49, no. 10, pp. 1403–1410, Oct. 2001.
• E. Carrasco, J. A. Encinar, and M. Barba, “Bandwidth improvement in large reflectarrays by using true-time delay”, IEEE Trans. Antennas Propag., vol. 56, no. 8, pp. 2496–2503, Aug. 2008.
• P. Nayeri, F. Yang, and A. Z. Elsherbeni, “A broadband reflectarray using sub-wavelength patch elements,” IEEE Antennas and Propagation Society International Symposium, South Carolina, U.S., 2009.
• D. M. Pozar, S. D. Targonski, and R. Pokuls, “A shaped- beam microstrip patch reflectarray,” IEEE Trans. Antennas Propag., vol. 47, pp. 1167–1173, July 1999.
• M. Arrebola, J. A. Encinar, and M. Barba, “Multifed printed reflectarray with three simultaneous shaped beams for LMDS central station antenna”, IEEE Trans. Antennas Propag., vol. 56, no. 6, pp. 1518–1527, June 2008.
• S. V. Hum, M. Okoniewski, and R. J. Davies, “Modeling and design of electronically tunable reflectarrays,” IEEE Trans. Antennas Propagat., vol. 55, no. 8, pp. 2200-2210, Aug. 2007. [14] R. B. Dybdal, “Satellite antennas,” in Antenna Engineering Handbook, J. Volakis, McGraw-Hill, 2007.
• Ansoft HFSS v15.0, ANSYS Inc., 2013.