A FLEXIBLE OPTIMIZATION METHOD FOR THE PATTERN SYNTHESIS OF EQUISPACED LINEAR ARRAYS WITH EQUIPHASE EXCITATION

A new synthesis method for linear arrays having equiphase excitation currents is proposed. In addition to allowing for the exact specification of the beamwidth and for the specification of individual sidelobe levels by index or as a function of bearing (e.g., angularly extended nulls), multiple deep narrow nulls can be specified at arbitrary bearing angles. The method is suitable for the design of broadside or endfire arrays with sum or difference patterns and can also be used for the design of superdirective arrays with good radiation efficiencies and sensitivity properties. For computational efficiency, the method uses a new constrained multivariable Remez-type L(infinity) approximation technique.