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Ashok Kumar, V.
- Design and Analysis of Broadband Beamspace Adaptive Arrays Using Fractional Fourier Transform
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Authors
Affiliations
1 Dept. of Electronics and Communication Engineering, College of Engineering, (AITAM), Tekkali, IN
2 Dept. of Electronics and Communication Engineering, AUCE, Visakhapatnam, IN
3 Dept. of Electronics and Communication Engineering College of Engineering, (AITAM), Tekkali, IN
1 Dept. of Electronics and Communication Engineering, College of Engineering, (AITAM), Tekkali, IN
2 Dept. of Electronics and Communication Engineering, AUCE, Visakhapatnam, IN
3 Dept. of Electronics and Communication Engineering College of Engineering, (AITAM), Tekkali, IN
Source
International Journal of Electronics and Communication Engineering, Vol 5, No 2 (2012), Pagination: 193-206Abstract
The beamwidth of a linear array depends on number of elements in the array and frequency of the input signal. At present designing of wideband antennas and beamformers became important in the fields of microphone arrays intended for teleconferencing, in transmitting or receiving spread spectrum signals, crip signals etc. A beamspace adaptive planar array for broadband beamforming is proposed based on the filter-and-sum beamforming technique and the required filters are implemented using fractional Fourier Transform. A detailed design method was provided for adaptive arrays and simulation results are provided for the proposed method. The results obtained shows that fractional Fourier Transform filter method is superior in interference rejection compared to conventional finite impulse response filter method.Keywords
Antenna Arrays, Linear Arrays, Broadband Antennas, Adaptive Antennas, Constant Beam Width, Interference Rejection, Filter–and–Sum Beamformer, Fractional Fourier Transform (FrFT)References
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