%I University of Trento %A Paolo Rocca %A Luca Manica %A Andrea Massa %X In this paper, the extension of the Contiguous Partition Method (CPM) from linear to planar arrays is described and assessed. By exploiting some properties of the solution space, the generation of compromise sum-difference patterns is obtained through an optimal excitation matching procedure based on a combinatorial method. The searching of the solution is carried out thanks to an efficient path-searching algorithm aimed at exploring the solution space represented in terms of a graph. A set of representative results are reported for the assessment as well as for comparison purposes. The final version of this article is available at the url of the journal PIERB http://www.jpier.org/PIERB/ %D 2008 %K Planar Arrays, Compromise patterns, Sum and difference modes, Direct acyclic graph %L elediasc12476 %T An Effective Excitation Matching Method for the Synthesis of Optimal Compromises between Sum and Difference Patterns in Planar Arrays