**5. Conclusions**

In this chapter, we have presented and discussed the analytical formulation of the steered beam adaptive array, and we have studied the performance of the uniformly spaced steered beam adaptive array from several perspectives. It is found that by increasing the number of array elements, its directivity increases and as a result, its sensitivity to pointing errors increases as well. We also found that the greater the desired signal dynamic range (in terms of input *SNR*/element), we wish to accommodate, the less pointing error we should have. This also applies when the input *SNR*/element of the desired signal increases.

It has been found also that low values (<0.001) and high values (>0.2) of the feedback loop gain of the array have a negative effect on the performance of the array. Therefore, moderate values of feedback loop gain are preferred. It is assumed that the bandwidth of the feedback loop is large enough to accommodate the processed signals; otherwise, the adaptation process would behave erroneously.

The effect of the interference signals on the array is less if their *INR*s and bandwidths have low values. Additionally, it has been found that if the DOA of the interference is far away from the DOA of the desired signal, its effect is less pronounced. Moreover, it is shown that if the number of the interference signals is less than the degrees of freedom of the array, the effect on the performance is less noticeable, whereas, when the number of interferers exceeds the degrees of freedom of the array, the output *SINR* is significantly affected.
