Design and Analysis of Array Weighted Wideband Antenna using FRFT
Adari Satya Srinivasa Rao1 and Prudhivi Mallikarjuna Rao2
1Department of ECE, Aditya Institute of Technology and Management, India
2Department of ECE, Andhra University College of Engineering, India
1Department of ECE, Aditya Institute of Technology and Management, India
2Department of ECE, Andhra University College of Engineering, India
Abstract: The beamwidth of a linear array depends on number of elements in the array and frequency of the input signal. The main requirement of wideband beamformer is, the main beam pattern should be constant even there is a change in input signal frequency. Various methods were proposed in literature, one method is called elemental lowpass filtering designed by using Finite Impulse Response (FIR) digital filters. In this paper, the elemental lowpass filtering method was implemented using Fractional Fourier Transform (FRFT) and performance analysis was carried out with array weighting.
Keywords: Antenna array, wideband antenna, FRFT, array weighting.
Received December 28, 2010; accepted May 24, 2011; published online August 5, 2012