Broadband Pattern Synthesis with Minimum Mainlobe Beamwidth and Sidelobe Level Control

In this paper, an algorithm to obtain a minimum mainlobe beamwidth and control sidelobe level for broadband arrays is presented. The proposed algorithm has two steps. At the first step, for the reference frequency, a minimum mainlobe width approach is firstly proposed to obtain the reference pattern which has minimum mainlobe width with the given side-lobe level. At the second step, for other frequencies, the sidelobe levels are controlled to enlarge their corresponding beam width to be equal, resulting a constant beamwidth for broadband arrays. Simulations are provided to validate the effectiveness and superiority of the proposed algorithm.