On Tue, 11 Jun 2002, Brandon Fosdick wrote:

>I understand the beamforming principles right up to the part about predefined
>weights. How do I determine the weights? I've also seen mention of "null" beams.
>What are they?

Tal will tell you about the weights, the nulls and side lobes result from
the fact that the phased array is also a diffraction grating at the same
time and it has a large number of side lobes and nulls. The more elements
in the array the more of both you have. By weights he prolly means the you
need to balance the individual radiators so they appear equal, otherwise
the beam won't focus (or won't correlate right, which is the same thing
here) ;-).

Peter

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