### Design of High Directive Planar Antenna using Schelkunoff Polynomial

#### Abstract

The words broadcasting, unicasting and multicasting are the well familiar terms in the field of communications and are very important in describing various parameters in designing the system. In the field of communications, the applications which involve broadcasting needs an antenna of high directivity and should use the power effectively (low side lobes). Where in applications that needs unicast-reception mainly needs high directivity (Zone of reception) and low interference (low side lobes) antennas. There are some special applications like tracking radars, surveillance antennas demand patterns with special characteristics (Beam widths). Due to the non complexity in implementation and ability to produce symmetrical-high directive beams, generally planar array antennas are used in above mentioned applications. Planar antennas, with compromise in increased number of elements and size, produces high directive beams. Other way of generating desired beam pattern is by synthesizing the antenna radiation pattern. Schelkunoff polynomial synthesis method is one being used in linear array design for suppressing radiation in undesired directions, there by increases the directivity. In order to produce the desired beam with high directivity this paper proposes a planar array design method and also extends the schelkunoff polynomial method (confined as linear array synthesismethod) to planar array design to produce cost effective high directive antennas. The radiation pattern characteristics Directivity, 3dB beam width, Null-Null beam width and side lobe levels are used to analyse the performance of proposed design and algorithm.

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R.S.ELLIOT, "Beamwidth and Directivity of Large Scanning Arrays," First of Two Parts, The Microwave Journal, December 1963.

E. Ahmed, K. R. Mahmoud, S. Hamad and Z. T. Fayed, “Using Parallel Computing for Adaptive Beamforming Applications,” Progress In Electromagnetism Research Symposium Proceedings, Cambridge, USA, July 5-8, 2010, pp. 296-299.

Andy VESA, Florin ALEXA, “A Comparison between Radiation Pattern Characteristics for Array Antennas”, 6th IEEE International Symposium on Applied Computational Intelligence and Informatics, Timisoara, Romania, May 19–21, 2011, ISBN- 978-1-4244-9109-4,pp.111-115.

Schelkunov, S. A., "A Mathematical Theory of Linear Arrays," Bell System Tech. J., 1943, pp. 80-107.

Ehsan Azordegan, Mahmoud Kamarei, “Studying The Effects of High Order Roots of Array Factor Polynomial On Phased Array's Beamwidth”, ISCIT 2006, 0-7803-9740-X, pp.910-915.

G.S.N.RAJU, “Antennas and Wave propagation”, Pearson Education India, 2006.

A Ignea, E. Marza, A. De Sabata, Antene si propagare, Editura de Vest, Timisoara, 2002.

Constantine A.Balanis, Antenna Theory: Analysis and Design, 2nd ed., John Wiley & Sons, New York, 1997.

W.L. Stutzman and G.A. Thiele, Antenna Theory and Design, John Wiley & Sons, New York, 1998.

R. J. Mailloux, Phased Array Antenna Handbook, 2nd ed., Artech House, 2005.

Fawwaz T. Ulaby, Applied Electromagnetics, Prentice-Hall, Inc., New Jersey, 2007.

Robert J. Mailloux, Phased Array Antenna Handbook, 2nd Ed, ARTECH HOUSE, INC., 2005

Mahmoud, K. R., M. El-Adawy, S. M. M. Ibrahem, R. Bansal, and S. H. Zainud-Deen, “A comparison between circular and hexagonal array geometries for smart antenna systems using particle swarm optimization algorithm,” Progress In Electromagnetics Research, PIER 72, 75– 90, 2007.

Zainud-Deen, S. H., E. S. Mady, K. H. Awadalla, and H. A. Sharshar, “Adaptive arrays of smart antennas using genetic algorithm,” TwentySecond National Radio Science Conference (NRSC 2005), Cairo, Egypt, March 15–17, 2005.

Bataineh, M. H. and J. I. Ababneh, “Synthesis of aperiodic linear phased antenna arrays using particle swarm optimization,” Electromagnetics, Vol. 26, Issue 7, 531–541, October 2006.

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