Investigations on concentric circular antenna array for the generation of optimized beams using windowing techniques

Optimized beams from the antenna arrays are very important for end-to-end communication, marine engineering RADAR and in all the communication techniques with out cables. As the windowing techniques are very simple and calculation of coefficients is very easy, windowing techniques are applied to the concentric circular antenna array. The radiation parameters such as sidelobe levels and 3dB beam width of the antenna array can be modified effectively with the application of windowing techniques. Different windowing techniques applied in this paper are Hamming, Hanning, Blackman and Bartlett. The results are evaluated numerically and compared with uniformly excited antenna arrays and the same are presented at the end of the paper.