volume | PIER Journals

Abstract

An improved mutual coupling calibration approach based on the element pattern reconstruction (EPR) method is proposed in this paper. Compared to previous calibration methods in which the calibration is carried out in the entire space, the space angle ranges to be calibrated in this method is partitioned according to the interested directions. Through the partition of the space angle region, the angle ranges to calibrate are narrowed, and thus more accurate calibration matrix can be obtained in corresponding angle regions. With the employment of the calibration matrix on 2-D DOA estimation, more effective mutual coupling calibration and more accurate DOA estimations are achieved by alternate iteration in each angle region. The validity of this method is verified by an L-shaped microstrip antenna array, and the performance of mutual coupling calibration is presented by the better accuracy in 2-D DOA estimations.

1. Krim, H. and M. Viberg, "Two decades of array signal processing research: The parametric approach," IEEE Signal Processing Mag., Vol. 13, 67-94, Jul. 1996.
doi:10.1109/79.526899 Google Scholar

2. Schmidt, R. O., "Multiple emitter location and signal parameter estimation," IEEE Trans. Antennas Propag., Vol. 34, No. 3, 276-280, Mar. 1986.
doi:10.1109/TAP.1986.1143830 Google Scholar

3. Kummer, W. H., "Basic array theory," Proc. IEEE, Vol. 80, No. 1, 127-140, Jan. 1992.
doi:10.1109/5.119572 Google Scholar

4. Forster, P., P. Larzabal, and E. Boyer, "Threshold performance analysis of maximum likelihood DOA estimation," IEEE Trans. Signal Processing, Vol. 2, No. 11, 3183-3191, 2004.
doi:10.1109/TSP.2004.836463 Google Scholar

5. Gupta, J. and A. A. Ksienski, "Effect of mutual coupling on the performance of adaptive arrays," IEEE Trans. Antennas Propag., Vol. 31, No. 5, 785-791, Sep. 1983.
doi:10.1109/TAP.1983.1143128 Google Scholar

6. Hui, H. T., "Improved compensation for the mutual coupling effect in a dipole array for direction finding," IEEE Trans. Antennas Propag., Vol. 51, No. 9, 2498-2503, 2003.
doi:10.1109/TAP.2003.816303 Google Scholar

7. Lui, H.-S. and H. T. Hui, "Effective mutual coupling compensation for direction-of-arrival estimations using a new, accurate determination method for the receiving mutual impedance," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 2-3, 271-281, 2010.
doi:10.1163/156939310790735598 Google Scholar

8. Edwin Lau, C. K., R. S. Adve, and T. K. Sarkar, "Minimum norm mutual coupling compensation with applications in direction of arrival estimation," IEEE Trans. Antennas Propag., Vol. 52, No. 8, 2034-2041, Aug. 2004.
doi:10.1109/TAP.2004.832511 Google Scholar

9. Friedlander, B. and A. J. Weiss, "Direction finding in the presence of mutual coupling," IEEE Trans. Antennas Propag., Vol. 39, No. 3, 273-284, Mar. 1991.
doi:10.1109/8.76322 Google Scholar

10. Lin, M. and L. Yang, "Blind calibration and DOA estimation with uniform circular arrays in the presence of mutual coupling," IEEE Antennas and Wireless Propagation Letters, Vol. 5, 315-318, 2006.
doi:10.1109/LAWP.2006.878898 Google Scholar

11. Sellone, F. and A. Serra, "An iterative algorithm for the compensation of toeplitz mutual coupling in uniform and linear arrays," 12th Digital Signal Processing Workshop, 438-443, 2006. Google Scholar

12. Khallaayoun, A., R.Weber, and Y. Huang, "A blind iterative calibration method for high resolution DOA estimation ," IEEE Military Communication Conference, 199-204, 2011. Google Scholar

13. Huang, Q., H. Zhou, J. Bao, and X. Shi, "Mutual coupling calibration for microstrip antenna arrays via element pattern reconstruction method," IEEE Antennas and Wireless Propagation Letters, Vol. 13, 51-54, Jan. 2014.
doi:10.1109/LAWP.2013.2296073 Google Scholar

14. Huang, Q., H. Zhou, J. Bao, and X. Shi, "Accurate calibration of mutual coupling for conformal antenna arrays," Electronic Letters, Vol. 49, No. 23, 1418-1420, Nov. 2013.
doi:10.1049/el.2013.2258 Google Scholar

15. Huang, Q., et al. "Accurate DOA estimations using microstrip adaptive arrays in the presence of mutual coupling effect," International Journal of Antennas and Propagation 2013, 2013. Google Scholar

16. Hua, Y. and T. Sarkar, "An L-shaped array for estimating 2-D direction of wave arrival," IEEE Antennas and Propagation, Vol. 39, No. 2, 143-146, Feb. 2006.
doi:10.1109/8.68174 Google Scholar

17. Yaezawa, J. and H. Arai, "Calibration technique in two-dimensional DOA estimation using two linear arrays," Proc. 2006 IEEE APS, 211.8, Aug. 2006. Google Scholar

18. Yaezawa, J. and H. Arai, "Two-dimensional DOA estimation using L-shaped patch array by light calibration technique," IEEE TENCON, 2007. Google Scholar

Dr. Jianhui Bao

Professor Qiulin Huang

Dr. Xin Huai Wang

Dr. Peng Liu

Professor Xiao-Wei Shi