A Design of 1-bit Broadband Multipolarization Reconfigurable Reflectarray Antenna in Ka band

The design and simulation of a 1-bit broadband multi-polarization reconfigurable reflectarray antenna (RRA) in Ka band is proposed in this paper. The unit cell of the RRA consists of four patches and four p-i-n diodes, which can be used in broadband multi-polariztion working mode. By controlling the on-off state of the diodes, two kinds of phase shift states (0° and 180°) can be realized to form a 1-bit phase quantization. The reflection phase of unit cell should compensate for the spatial phase delay from the feed phase center. The simulated results show that the RRA can realized a $\pm 60^{\circ}$ beam scanning in the frequency range of 31GHz-40GHz.