Vol. 30

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2013-04-10

Using Spherical Shells for Gain Enhancement of Compact Wideband Phased Arrays

By Abdelnasser Eldek
Progress In Electromagnetics Research M, Vol. 30, 95-104, 2013
doi:10.2528/PIERM13030402

Abstract

Spherical shells are proposed and presented to improve the gain of a class of wideband phased array systems. This kind of phased arrays is composed of compact elements, which allow for a small distance between elements that is much less than half wavelength at lower operating frequencies. This small distance, as a function of wavelength, results in a small gain. Therefore, shells confronting the array are proposed to improve the gain. The formulations required to define the geometry and material properties of the shell are developed. Two and four element arrays are designed and simulated with and without shells to test the technique, and promising results are obtained at lower frequencies for the array with shells.

Citation


Abdelnasser Eldek, "Using Spherical Shells for Gain Enhancement of Compact Wideband Phased Arrays," Progress In Electromagnetics Research M, Vol. 30, 95-104, 2013.
doi:10.2528/PIERM13030402
http://jpier.org/PIERM/pier.php?paper=13030402

References


    1. Parker, D. and D. C. Zimmermann, "Phased Arrays --- Part I: Theory and architectures," IEEE Trans. Antennas Propagat., Vol. 50, No. 3, 678-687, Mar. 2002.

    2. Eldek, A. A., "Pattern stability optimization for wideband microstrip antennas for phased arrays and power combiners," Microwave Opt. Tech. Lett., Vol. 48, No. 8, 1492-1494, Aug. 2006.
    doi:10.1002/mop.21740

    3. Eldek, A. A., "Design of double dipole antenna with enhanced usable bandwidth for wideband phased array applications," Progress In Electromagnetics Research, Vol. 59, 1-15, 2006.
    doi:10.2528/PIER06012001

    4. Eldek, A. A. and G. Zheng, "A microstrip-fed quasi-rhombus shape double dipole antenna for wideband phased array applications," Microwave Opt. Tech. Lett., Vol. 48, No. 12, 2461-2464, Dec. 2006.
    doi:10.1002/mop.21978

    5. Eldek, A. A., "Ultra wideband double rhombus antenna with stable radiation patterns for phased array applications," IEEE Trans. Antennas Propagat., Vol. 55, No. 1, 84-91, Jan. 2007.
    doi:10.1109/TAP.2006.886560

    6. Eldek, A. A., "Wideband 180 degree phase shifter using microstrip-CPW-microstrip transition," Progress In Electromagnetics Research B, Vol. 2, 177-187, 2008.
    doi:10.2528/PIERB07111507

    7. Eldek, A. A., "A double rhombus antenna fed by 180 degree phase shifter for ultra wideband phased array applications," IEEE Trans. Antennas Propagat., Vol. 56, No. 6, 1566-1572, Jun. 2008.
    doi:10.1109/TAP.2008.923363

    8. Chio, T. H. and D. H. Schaubert, "Parameter study and design of wideband widescan dual-polarized tapered slot antenna arrays," IEEE Trans. Antennas Propagat., Vol. 48, 879-886, June 2000.
    doi:10.1109/8.865219

    9. Guo, Y. X., K. M. Luk, and K. F. Lee, "L-probe fed thick-substrate patch antenna mounted on a finite ground plane," IEEE Trans. Antennas Propagat., Vol. 51, 1955-1963.

    10. Shafai, L., "Scan gain enhancement in phased arrays by element pattern synthesis," IEE Seventh International Conference on Antennas and Propagation (ICAP 91), Vol. 2, 914-917, 1991.

    11. Shnitkin, H., J. Green, and P. J. Bertalan, "Asymmetric ridge waveguide radiating element for a scanned planar array," IEEE Antennas and Propagation Society International Symposium, Vol. 1, 55-58, 1988.

    12. Green, J., H. Shnitkin, and P. J. Bertalan, "Asymmetric ridge waveguide radiating element for a scanned planar array," IEEE Trans. Antennas Propagat., Vol. 38, No. 8, 1161-1165, 1990.
    doi:10.1109/8.56951

    13. Song, C. and Q. Wu, "A wide-band phased array antennas with unequal space," 5th Global Symposium on Millimeter Waves (GSMM), 393-396, May 2012.

    14. Wang, H., D.-G. Fang, and Y. L. Chow, "Grating lobe reduction in a phased array of limited scanning," IEEE Trans. Antennas Propagat., Vol. 56, No. 6, 1581-1586, 2008.
    doi:10.1109/TAP.2008.923354

    15. Xia, T., S. Yang, and Z. Nie, "Design of a tapered balun for broadband arrays with closely spaced elements," IEEE Antennas and Wireless Propagation Letters, Vol. 8, 1291-1294, 2009.

    16. Ansoft Corporation, "HFSS: high frequency structure simulator based on the finite element method,", Version 14, Ansoft Corp., Canonsburg, PA, 2012.