Abstract  The beamwidth of a linear array depends on number o f elements in the array and frequency of the input signal. The main requirement of wideband beamformer is, the mai n beam pattern should be constant even there is a change in input signal frequency. Various methods were proposed in litera ture, one method is called elemental lowpass filtering designed by using Finite Impulse Response (FIR) digital filters. In t his paper, the elemental lowpass filtering method w as implemented using Fractional Fourier Transform (FRFT) and performance analysis was carried out with array weighting. .  

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[9] Sharma N., Saxena R., and Saxena C., Sharpening the Response of an FIR filter using Fractional Fourier Transform, The Journal of the Indian Institute of Science , vol. 86, pp. 163, 168, 2006. Design and Analysis of Array Weighted Wideband Antenna using FRFT 377 Adari Satya Srinivasa Rao received his M Tech. degree from Andhra University, Vishakapatnam in 2004 and he is a PhD student in Andhra University. He is having 15 years of teaching experience in various engineering colleges. Presently, he is working as Professor, Department o f ECE, Aditya Institute of Technology and Management, Tekkali. His interests include signal processing, adaptive antenna arrays and communication systems. Prudhivi Mallikarjuna Rao received his ME degree from Andhra University in 1985 and PhD degree from Andhra University in 1998. He is now working as Professor, Department of ECE, AUCE, Vishakaptnam. His interests include EMI/EMC, antenna array syntesis and applied electromagnetic applications. He has published 25 papers in various journals/proceedings in the field of antenna arrays and EMI/EMC.