Patent ID: 7298774
Filing Date: 2007-11-20
Classification: H01Q,H04B

Abstract:
1. An adaptive array apparatus that causes a weight to converge on an optimal value, by repeatedly adjusting the weight using predetermined calculations so as to minimize a difference between a desired signal and a signal which is weighted using the weight, the adaptive array apparatus comprising: judging means for judging whether an adjusted weight is located closer to the optimal value than a reference value, wherein the judging means judges that the adjusted weight is located closer to the optimal value than the reference value when the difference between the weighted signal and the desired signal becomes smaller than a predetermined value; and changing means for changing a first step size in accordance with the judgment result of the judging means, the first step size being used to determine an extent to which the weight should be adjusted in the predetermined calculations, wherein the changing means changes the first step size from a first value to a second value when the adjusted weight is judged to be located closer to the optimal value than the reference value, the second value corresponding to a lower rate at which the weight is adjusted than the first value.