Steering of Two-Element Array Antenna with Arbitrary Narrow Beam Array Factor

This paper describes steering of a two-element array antenna. The array antenna has an array factor having a narrow beam without side lobes. The array factor is modulated with a phase function, thus resulting in a high selectivity. A parameter determines the array halfpower beamwidth (HPBW). Mathematical expressions for beam steering with approximately constant HPBW in a wide azimuth range are obtained. The error values of the HPBW are discussed. The described results are verified by numerical simulations.