抄録
The array antennas with cosecant beam are used for radar antenna and broadcasting antenna. For the pattern synthesis of this antenna, a new design method is proposed in this report. The conventional sampling method and the linear programming(LP) are applied in this method. First, the sources are designed by the sampling method, and using the obtained phases, the optimum amplitudes are obtained by LP. Next, the amplitudes and phases are corrected together by LP, and the correction is repeated. The local optimum is obtained by this three procedures. The obtained phases are local optimum, though the ones by the conventional method are not. For example, we synthesized the sharp cut-off pattern for broadcasting array antenna with 10 elements, and Chebyshev patterns were obtained.
