Influence of the Aperture Edge Diffraction Effects on the Mutual Coupling Compensation Technique in Small Planar Antenna Arrays

• Autorzy: Zamłyński M. , Słobodzian P.
• Języki publikacji: EN

Abstrakty

EN

In this paper the quality of a technique to compensate for mutual coupling (and other phenomena) in small linear antenna arrays is investigated. The technique consists in calculation of a coupling matrix, which is than used to determine corrected antenna array excitation coefficients. Although the technique is known for more than 20 years, there is still very little information about how different phenomena existing in a real antenna arrays influence its performance. In this paper two models of antenna arrays are used. In the first model the effect of mutual coupling is separated from the aperture edge diffraction. In the second model antenna both mutual coupling and aperture edge diffraction effects are included. It is shown that mutual coupling itself can be compensated very well and an ultralow sidelobe level (i.e. –50 dB) could be achieved in practice. In the presence of diffraction effects –46.3 dB sidelobe level has been attained, but radiation pattern can be controled only in narrow angle range (i.e. up to & #177;60°)

Słowa kluczowe

EN

active element; mutual coupling; antenna array; diffraction

• Wydawca: Polish Academy of Sciences, Committee of Electronics and Telecommunication
• Czasopismo: International Journal of Electronics and Telecommunications
• Rocznik: 2011
• Tom: Vol. 57, No. 1
• Strony: 115--120
• Opis fizyczny: Bibliogr. 17 poz., tab., wykr.

Twórcy

autor

Zamłyński M.

autor

Słobodzian P.

• Institute of Telecommunications, Teleinformatics and Acoustics, Wrocław University of Technology, Janiszewskiego 7/9, 50-372 Wrocław, Poland,

Bibliografia

• [1] R. C. Hansen, Phased Array Antennas. Wiley-Interscience, 1998.
• [2] D. M. Pozar, “The active element pattern,” IEEE Transactions on Antennas and Propagation, vol. 42, no. 8, pp. 1176–1178, August 1994.
• [3] H. Steyskal and J. Herd, “Mutual coupling compensation in small array antennas,” IEEE Transactions on Antennas and Propagation, vol. 38, no. 12, pp. 1971–1975, December 1990.
• [4] R. Borowiec, R. Hossa, P. Slobodzian, and Z. Langowski, “Compensation of mutual coupling in small antenna arrays,” in 14th International Conference on Microwaves, Radar and Wireless Communications, vol. 3, 2002, pp. 894–897.
• [5] P. Darwood, P. Fletcher, and G. Hilton, “Mutual coupling compensation in small planar array antennas,” IEE Proceedings Microwaves, Antennas and Propagation, vol. 145, no. 1, pp. 1–6, February 1998.
• [6] S. Sadat, C. Ghobadi, and J. Nourinia, “Mutual coupling compensation in small phased array antennas,” in IEEE Antennas and Propagation Society International Symposium, vol. 4, June 2004, pp. 4128–4131.
• [7] H. Aumann and F. Willwerth, “Phased array calibrations using measured element patterns,” in Antennas and Propagation Society International Symposium, vol. 2, June 1995, pp. 918–921.
• [8] L. Kuehnke, “Phased array calibration procedures based on measured element patterns,” in Eleventh International Conference on Antennas and Propagation, vol. 2, 2001, pp. 660–663.
• [9] M. N. O. Sadiku, Numerical Techniques in Electromagnetics, 2nd ed. CRC Press, 2000.
• [10] J. Wheless, W. P. and L. T. Wurtz, “Introducing undergraduates to the moment method,” IEEE Transactions on Education, vol. 38, no. 4, pp. 385–389, November 1995.
• [11] A. Villeneuve, “Taylor patterns for discrete arrays,” IEEE Transactions on Antennas and Propagation, vol. 32, no. 10, pp. 1089–1093, October 1984.
• [12] D. M. Pozar and B. Kaufman, “Design considerations for low sidelobe microstrip arrays,” IEEE Transactions on Antennas and Propagation, vol. 38, no. 8, pp. 1176–1185, August 1990.
• [13] A. Bhattacharyya, “Floquet-modal-based analysis for mutual coupling between elements in an array environment,” IEE Proceedings Microwaves, Antennas and Propagation, vol. 144, no. 6, pp. 491–497, December 1997.
• [14] I. Salonen, A. Toropainen, and P. Vainikainen, “Linear pattern correction in a small microstrip antenna array,” IEEE Transactions on Antennas and Propagation, vol. 52, no. 2, pp. 578–586, February 2004.
• [15] J. Huang, “The finite ground plane effect on the microstrip antenna radiation patterns,” IEEE Transactions on Antennas and Propagation, vol. 31, no. 4, pp. 649–653, July 1983.
• [16] R. Kouyoumjian and P. Pathak, “A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface,” Proceedings of the IEEE, vol. 62, no. 11, pp. 1448–1461, November 1974.
• [17] D. Kelley and W. Stutzman, “Array antenna pattern modeling methods that include mutual coupling effects,” IEEE Transactions on Antennas and Propagation, vol. 41, no. 12, pp. 1625–1632, December 1993.