A New Beam-Scanning Scheme of a 1-bit Uniform 1-D Antenna Array for Generating Uniform Field Distribution

In this paper, a 1-bit uniform one-dimension (1-D) antenna array used for calculating radiation pattern of antenna is discussed. For this kind of antenna array, the amplitude of elements can only be set as 0 or 1. The method based on adjusting amplitude of elements for changing radiation angle is put forward. To generate uniform field distribution, the condition of beam switching is introduced and a new beam-scanning scheme which controls the gain of different beams by adjusting the number of used elements is discussed. A simulated example is used and calculated to verify the new beam-scanning scheme. The normalized radiation pattern, the normalized received power and the states of elements are shown. In this example, 20 beams which have different radiation angle and gain are used to generate a merged received power based on the principle of beam switching. From the calculated results, the last merged received power becomes uniform, which verifies the new beam-scanning scheme.