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circular array beamforming

Started by hassanhamdoun859 August 14, 2008
Dear all 
I am trying to calculate the broadband radiation pattern(beampattern) of a
circular array beamformer operating in a given frequency range(1 octave)
such that the main lobe response is approximately similar for all
frequencies i.e the beampattern is frequency invariant

I am trying to do that in MATLAB , I need help references matlab
documentation or any usefull papers 

please help 
thanks in advance