**3. Conclusions**

The major advantage of present work is reduction of number of elements for getting specific patterns for the given array length by thinning. It is also more useful for obtaining the desired excitation levels at uniform levels while some of the elements are turned off. Here thinning concept is applied for resonant spacing and for Ishimaru spacing and observed the response for 2nd and 19th element turned off. Hence, the percentage of Thinning is 10% or percentage of Filling is 90%. From the results the beam width for Ishimaru spacing is more whereas the beam width for Resonant spacing is less and side lobe levels for Resonant spacing is more and the same response is observed for Gaussian distribution for array of 20 elements using machine learning algorithms. Such patterns are useful in radar applications to reduce EMI and creating nulls in unwanted directions.
