Design of Uniform and Non Uniform Circular Arrays Comparison with FFA and RLS

 
 
 
  • Abstract
  • Keywords
  • References
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  • Abstract


    Multiple antennas can be arranged in various geometrical configurations to form an antenna array with high directive radiation pattern. Linear antennas are limited in their steering capability. The circular arrays have become popular in recent years over other array geometries because they have the capability to perform the scan in all the directions without a considerable change in the beam pattern and provide 3600 azimuth coverage. Circular arrays which are used for design is compared to linear and rectangular arrays as they does not have edge elements. They can be used for beam forming in the azimuth plane for example at the base stations of the mobile radio communication systems as the components for signal processing. FFA design method of circular apertures for narrow beam width and low side lobes has been reported by Taylor. It includes the development of continuous circular aperture distributions, which contain only two independent parameters A and , where A is related to the design of side lobe level,  is a number controlling the degree of uniformity of the side lobes. A radiation pattern is expressed in the integral form. They are compared with a line source and circular aperture.

     

     


  • Keywords


    Uniform-Circular array,RLS,FFA,Array

  • References


      [1] Chatterjee,Mahanti, and Mahapatra, “Optimum ring spacing and inter-element distance for sidelobe reduction of a uniform concentric ring array antenna using differential evolution algorithm,” Communication Systems (ICCS), 2010 IEEE International Conference on, pp.254-258, 17-19, November 2010.

      [2] Mandal, Durbadal, Sakti Prasad Ghoshal, and Anup Kumar Bhattacharjee. “Radiation pattern optimization for a concentric circular antenna array with based PSO.” International Journal of RF and Microwave Computer‐Aided Engineering, vol.20, no.5, pp.577-586, 2010.

      [3] D. Mandal, Majumdar, R. Kar and S. P. Ghoshal, “Thinned concentric circular array antennas synthesis using a genetic algorithm,” Research and Development (Scored), 2011 IEEE Student Conference on, pp.194-198, 19-20 December 2011.

      [4] R.C. Hansen, “Array pattern control and synthesis,” Proceedings of the IEEE, vol. 80, no.1, pp.141-151, 1992.

      [5] R. Vescovo, “Array factor synthesis for circular antenna arrays,” Antennas and Propagation Society International Symposium. AP-S. Digest, pp.1574-1577, June 28 1993-July 2 1993.


 

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Article ID: 21653
 
DOI: 10.14419/ijet.v7i4.29.21653




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