PIER
 
Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 69 > pp. 35-46

OPTIMUM NORMALIZED-GAUSSIAN TAPERING WINDOW FOR SIDE LOBE REDUCTION IN UNIFORM CONCENTRIC CIRCULAR ARRAYS

By M. I. Dessouky, H. A. Sharshar, and Y. A. Albagory

Full Article PDF (399 KB)

Abstract:
In this paper, a new tapered beamforming function for side lobe reduction in the uniform concentric circular arrays (UCCA)is proposed. This technique is based on tapering the current amplitudes of the rings in the array, where all elements in an individual ring are weighted in amplitude by the same value and the weight values of different rings are determined by a function that has a normalizedgaussian probability density function variation. This novel tapering window is optimized in its parameters to have the lowest possible side lobe level that may reach 43 dB below the main lobe and these optimum weights are found to be function of the number of elements of the innermost ring and the number of rings in the array. The proposed tapering window can be modified to compensate the gain reduction due to tapering when compared with the uniform feeding case.

Citation: (See works that cites this article)
M. I. Dessouky, H. A. Sharshar, and Y. A. Albagory, "Optimum Normalized-Gaussian Tapering Window for Side Lobe Reduction in Uniform Concentric Circular Arrays," Progress In Electromagnetics Research, Vol. 69, 35-46, 2007.
doi:10.2528/PIER06111301
http://www.jpier.org/PIER/pier.php?paper=06111301

References:
1. Balanis, C. A., Antenna Theory: Analysis and Design, Harper Row, New York, 1982.

2. Collin, R. E., Antenna and Radio-wave Propagation, McGraw- Hill, New York, 1985.

3. Bogdan, L. and C. Comsa, Analysis of circular arrays as smart antennas for cellular networks, Proc. IEEE Int. Symp. Signals, Vol. 2, No. 7, 525-528, 2003.

4. Dessouky, M., H. Sharshar, and Y. Albagory, "Efficient sidelobe reduction technique for small-sized concentric circular arrays," Progress In Electromagnetics Research, Vol. 65, 187-200, 2006.
doi:10.2528/PIER06092503

5. Sanyal, S. K., Q. M. Alfred, and T. Chakravarty, "A novel beamswitching algorithm for programmable phased array antenna," Progress In Electromagnetics Research, Vol. 60, 187-196, 2006.
doi:10.2528/PIER05122502

6. Thornton, J., D. Grace, M. H. Capstick, and T. C. Tozer, "Optimizing an array of antennas for cellular coverage from a high altitude platform," IEEE Transactions on Wireless Communications, Vol. 2, No. 3, 484-492, 2003.
doi:10.1109/TWC.2003.811052


© Copyright 2014 EMW Publishing. All Rights Reserved