Call for Paper - November 2020 Edition
IJCA solicits original research papers for the November 2020 Edition. Last date of manuscript submission is October 20, 2020. Read More

Optimized Cosecant Patterns from Arrays of Discrete Sources

International Journal of Computer Applications
© 2015 by IJCA Journal
Volume 113 - Number 8
Year of Publication: 2015
M. Chandrasekhar
G. S. N. Raju

M.chandrasekhar and G.s.n.raju. Article: Optimized Cosecant Patterns from Arrays of Discrete Sources. International Journal of Computer Applications 113(8):11-16, March 2015. Full text available. BibTeX

	author = {M.chandrasekhar and G.s.n.raju},
	title = {Article: Optimized Cosecant Patterns from Arrays of Discrete Sources},
	journal = {International Journal of Computer Applications},
	year = {2015},
	volume = {113},
	number = {8},
	pages = {11-16},
	month = {March},
	note = {Full text available}


In this paper, an aperture distribution for the synthesis of a specified radiation pattern is designed and it is applied to a linear array of discrete sources. The cosecant pattern is achieved by an optical antenna system with Luneburg lens. These patterns are produced using Fourier transform method. Computed cosecant patterns for different beamwidths are presented. These patterns are used in ground-mapping airborne radars and ground-based search radars applications.


  • G. S. N. Raju, "Antennas and Propagation" ,Pearson Education, 2005.
  • W. L. Stutzman and G. A. Thiele, "Antenna Theory and Design", John Wiley & Sons Inc. , U. S. A.
  • G. S. Tomar and RaviKushwah, "An overview of Design and Analysis techniques of Bootlace Lens for Multiple beamforming", IACSIT International Journal of Engineering and Technology Vol. 1, No. 5, December, 2009.
  • Tse-Tong Chia and Wai-Yean Lim, "Design of low profile cylindrical Lune burg lens Antenna", IEEE Trans. Antennas Propagat. vol. 12, No. 6, Sec. 2009.
  • R. K. Luneburg, Mathematical Theory of optics. Berkeley and Los Angeles, CA:University of California Press,1964.
  • Ajoy Chakraborty et al. , "Scanning of Sector and Cosecant Beams Generated by a Circular Aperture", IEEE Transactions on Antennas and Propagation, Vol. AP-32, No. 9, September 1984.
  • G. V. Borgiotti, "Degrees of freedom of an antenna scanned in a limited sector", in IEEE Antennas Propagat. Symp. Dig. , June 1975, p. 319.
  • E. C. Dufort, "Optimum Optical limited Scan Antenna", IEEE Trans. Antennas Propagation. Vol. AP-34, no. 9, Sept. 1986.
  • R. J. Mailloux and P. Blacksmith, "Array and reflector techniques for airport precision approach radars", Microwave J. , vol. 17, p. 35, Oct. 1974.
  • W. Rotman and R. F. Turner, "Wide angle microwave lens for line source applications", IEEE Trans. Antennas Propagat. Vol. AP-11, p. 623, Nov. 1963
  • B. Sadasiva Rao and G. S. N. Raju, "shaped beams from thick arrays", International Journal of Electronics and Communication Engineering, Volume 4, No. 5 pp. 577-592, ISSN - 2011.
  • Kang Wook Kim, "Characterizations of Spherical Luneburg Lens Antennas with Air-gaps and Dielectric Losses", Journal of the Korea Electromagnetic Engineering Society, vol. 1. No. 1, May 2001.
  • G. R. L. V. N. Srinivas Raju et al. , "Generation of shaped beam radiation patterns from a line source using Iterative sampling method", IJEST, Vol. 5, NO. 08 August 2013.
  • J. A. Rodriguez et al. , "Extension of the Orchard-Elliott Synthesis Method to Pure-Real Non Symmetrical Shaped Patterns", IEEE Transactions on Antennas and Propagation, Vol. 45, No. 8, August 1997.
  • Michael J. Buckley et al. , "Synthesis of Shaped Beam Antenna Patterns Using Implicitly Constrained Current Elements", IEEE Transactions on Antennas and Propagation, Vol. 44,No. 2,February 1996.