Synthesis of Non Mirror-symmetrical Far-Field Patterns Using Two Parallel Current Sheets

The direct array factor synthesis method is extended in this paper. Two parallel current sheets are used for synthesizing array factors with non mirror-symmetrical radiation patterns in the two sides of the sources.  Analysis shows that the synthesized current distributions are affected by the distance between the two current sheets.  Numerical results demonstrated that the method is efficient for synthesizing large scale antenna arrays with non mirror-symmetrical footprints.