Interference suppression in cylindrical microstrip patch array

Abstract

The modified improved LMS algorithm is an efficient algorithm for active cancellation of probing in linear and planar phased arrays. This motivates its usage in conformal adaptive array processing. In this paper a cylindrical microstrip patch array is considered. The Euler rotation matrix is used to transform element pattern from planar into non-planar surface. The optimal weights obtained are used to generate adapted pattern according to a given signal scenario. It is shown that nonplanar microstrip array along with adaptive algorithm is able to cater to the signal scenario by maintaining the gain towards the desired sources and placing accurate and deep nulls towards the interfering sources. This work has application in active RCS reduction