Title :
A flexible optimization method for the pattern synthesis of equispaced linear arrays with equiphase excitation
Author :
Shpak, Dale J. ; Antoniou, Andreas
Author_Institution :
Dept. of Eng., R. Roads Mil. Coll., Victoria, BC, Canada
fDate :
10/1/1992 12:00:00 AM
Abstract :
A synthesis method is proposed for linear arrays having equiphase excitation currents. 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∞ approximation technique
Keywords :
antenna arrays; antenna radiation patterns; directive antennas; function approximation; angularly extended nulls; arbitrary bearing angles; beamwidth; bearing function specification; broadside arrays; computational efficiency; constrained multivariable Remez-type L∞ approximation technique; difference patterns; endfire arrays; equiphase excitation; equispaced linear arrays; index specification; multiple deep narrow nulls; optimization method; pattern synthesis; radiation efficiencies; sensitivity properties; sidelobe levels; sum patterns; superdirective arrays; Computational efficiency; Councils; Design methodology; Iterative methods; Military computing; Optimization methods; Process design; Robustness;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
