Chebyshev-like Low Sidelobe Beampatterns with Adjustable Beamwidth and Steering-Invariance

A modification of the classic Dolph-Chebyshev low sidelobe array pattern design is introduced, which allows the adjustment of the mainlobe’s width relatively freely and independently from the sidelobe level. In order to illustrate the advantages of the tool provided by the new design method, its application to Uniform Linear Arrays (ULA’s) and Uniform Circular Arrays (UCA’s) is discussed. It is shown that by using the proposed design, low sidelobe beampatterns that are steering invariant within a certain range are achievable with a ULA. In addition the synthesis of beampatterns similar to those of sector antennas, but with electronically adjustable mainlobe, sidelobe level and steering direction are yielded with UCA’s.