در این مقاله ساختار جدیدی از آنتن آرایهای شکافی قطبش دایروی پهن باند با بهره بالا که با شبکه ترویج گر هایبرید متقارن تغذیهشده، در باند C معرفی شده است. عنصر منفرد آرایه پیشنهادی به فرم نواری L شکل با پهنای کاهش یافته مخروطی شکل واقع در روبروی شکافیدر صفحه زمین میباشد. براساس نتایج شبیهسازی، پهنای باند عنصر منفرد آرایه در بازه فرکانسی GHz 5/55 الی GHz 11/3 در حدود GHz 8/01% میباشد که در مقایسه با عناصر آرایه گزارش شده پیشین از افزایشی در حدود 53 برخوردار است. ساختار نهایی آنتن پیشنهادی شامل آرایه ای5 میباشد. نتایج اندازهگیری نشان میدهد که آنتن آرایهای شکافی طراحیشده دارای پهنای باند امپدانسی 55 % در بازه ×5 GHz 3/5 الی GHz 9/5همراه با پهنای باند قطبش دایروی در حدود 55 % در بازه GHz 5/5 الی GHz 5/5 با بیشینه بهره dBic 15/55 در فرکانس GHz 5/5 میباشد.ساختار ساده، سبک، ابعاد فشرده، قطبش دایروی با خلوص قطبش مناسب و بهره بالا، این آنتن را گزینه مناسبی برای کابردهای قطبش دایروی درباند C قرار داده است. نتایج اندازه گیری آنتن از تطابق مناسبی با نتایج شبیهسازی برخوردار می باشد.
Y. Haghian, S. H. Mohseni Armaki, and M. Kazerooni, “Design, Simulation and Realization of S band Circular Polarization Microstrip Array Antenna,” Journal of Applied Electromagnetics, vol. 2, no. 1, 2014.
S. Gao, Q. Luo, and F. Zhu, “Circularly polarized antennas,” John Wiley & Sons Ltd, United Kingdom, 2014.
M. pourhosseini and P. Rezaei, “Self-Polarizing Highly-Gain Fabry-Perot Cavity Antennas With EDR Unit Cell,” The 3rd Iranian Conference on Engineering Electromagnetic (ICEEM), pp. 1-4, 2014.
J. Pourahmadazar and S. Mohammadi, “Compact Circularly-Polarised Slot Antenna for UWB Applications,” Electronic Letters, vol. 45, no. 15, pp. 837-838, 2011.
M. pourhosseini and P. Rezaei, “Circularly Polarized Fabry Perot Antenna Using A Novel Design of Superstrate Structure,” 2nd Asian Symp. on Electromagnetics and Photonics Engineering, pp. 348-351, 2013.
M. Pourhosseini and P. Rezaei, “Design a Novel Structure of Circular Polarization Antenna Using Reflective Meta-Surface,” 3rd Iranian Conf. on Engineering Electromagnetic (ICEEM), pp. 1-4, 2014.
F. Yang, and Y. Rahmatsamii, “A Reconfigurable Patch Antenna Using Switchable Slots for Circular Polarization Diversity,” IEEE Microwave and Wireless Components Letters, vol. 12, no. 3, 2002.
S. Fu, S. Fang, Z. Wang, and X. Li, “Broadband Circularly Polarized Slot Antenna Array Fed By Asymmetric CPW for L-Band Application,” IEEE Antennas Wireless Propagation Letters, vol. 8, pp. 1014-1016, 2009.
F. S. Chang, K. L. Wong, and T. W. Chiou, “Low-Cost Broadband Circularly Polarized Patch Antenna,” IEEE Transactons on Antennas and Propagation, vol. 51, no. 10, pp. 3006-3009, 2003.
C.-W. Su and J.-S. Row, “Slot-Coupled Microstrip Antenna for Broadband Circular Polarization,” Electronics Letters, vol. 42, pp. 318-319, 2006.
T.-Y. Han and C.-Y.-D. Sim, “Probe-Feed Circularly Polarized Square Ring Microstrip Antennas with Thick Substrate,” Journal of Electromagnetics Waves and Applications, vol. 21, no. 1, pp. 71-80, 2007.
S. A. Mirmanafi and H. Khodabakhshi, “Design and Construction of Frequency Reconfigurable Micro-Strip UWB Antenna with Triple Controllable Notched Bands,” Journal of Applied Electromagnetics, vol. 3, no. 3, 2016.
L. Zhang, Y.-C. Jiao, Y. Ding, B. Chen, and Z.-B.Weng, “CPW-Fed Broadband Circularly Polarized Planar Monopole Antenna with Improved Ground-Plane Structure,” IEEE Transactons on Antennas and Propagation, vol. 61, no. 9, pp. 4824-4828, 2013.
R. Garg, P. Bhartia, I. Bahl, and A. Ittipiboon, “Microstrip Antenna Design Handbook,” Boston, Ma: Artech House, 2000.
P. S. Hall, J. S. Dahele, and J. R. James, “Design Principles of Sequentially Fed, Wide Bandwidth, Circularly Polarised Microstrip Antennas,” Proc. Microwave Antennas Propagation, vol. 136, pp. 381-389, 1989.
P. S. Hall, “Application of Sequential Feeding To Wide Bandwidth, Circularly Polarised Microstrip Patch Arrays,” IEEE Proceedings-Microwave Antennas Propagation, vol. 136, pp. 390-398, 1989.
J. Huang, “A Technique For an Array To Generate Circular Polarization with Linearly Polarized Elements,” IEEE Transactons on Antennas and Propagation, vol. 34, no. 9, pp. 1113-1119, 1986.
V. Rafii, J. Nourinia, J. Pourahmadazar, and F. Jalili, “Circularly Polarized Circular Slot Antenna Array Using Sequentially Rotated Feed Network,” Journal of Communication Engineering, vol. 1, no. 1, pp. 37-45, 2012.
V. Rafii, J. Nourinia, Ch. Ghobadi, J. Pourahmadazar, and S. Virdee, “Broadband Circularly Polarized Slot Antenna Array Using Sequentially Rotated Technique for C-Band
Applications,” IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 128-131, 2013.
Z. Mousavi, P. Rezaei, and V. Rafii, “Single Layer CPSSA Array With Change Polarization Diversity in Broadband Application,” International Journal of RF and Microwave Computer-Aided Engineering, vol. 27, no. 4, pp. 1-8, 2017.
J. Pourahmadazar and V. Rafii, “Broadband Circularly Polarized Slot Antenna Array for L and S-Band Applications,” Electronics Letters, vol. 48, no. 10, pp. 542-543, 2012.
S. Karamzadeh, V. Rafii, M. Kartal, O. N. Ucan, and B. S. Virdee, “Circularly Polarised Array Antenna with Cascade Feed Network for Broadband Application in C-Band,” Electronics Letters, vol. 50, no. 17, pp. 1184-1186, 2014.
M. Fakharian, P. Rezaei, and A. Orouji, “Reconfigurable Multiband Extended U-Slot Antenna with Switchable Polarization for Wireless Applications,” IEEE Antennas and Propagation Magazine, vol. 57, no. 2, pp. 194-202, 2015.
C. C. Chou, K. H. Lin, and H. L. Su, “Broadband Circularly Polarized Cross-Patch-Loaded Square Slot Antenna,” Electronics Lett. vol. 43, no. 9, pp. 485-486, 2007.
J.-Y. Sze, J.-C. Wang, and C.-C. Chang, “Axial-Ratio Bandwidth Enhancement of Asymmetric-CPW-Fed Circularly-Polarized Square Slot Antenna,” Electronics Lett., vol. 44, no. 18, pp. 1048-1049, 2008.
J.-Y. Sze and C.-C. Chang, “Circularly Polarized Square Slot Antenna with a Pair of Inverted-L Grounded Strips,” IEEE Antennas Wireless Propagation Letters, vol. 7, pp. 149-151, 2008.
P. Mohammadi, and V. Rafii, “High Gain and Broadband Circularly Polarized Square Slot Antenna Array,” Progress in Electromagnetics Research Letters, Vol. 43, pp. 105-113, 2013.
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