1-bit Linearly Polarized Unit-Cell for Transmitarray Applications

In this paper, a unit-cell for transmitarray antenna working at X-band is presented. The unit-cell is designed to provide 1-bit phase quantization at 12 GHz according to ON/OFF state of switches. The unit-cell is based on a multi-layer structure with a combination of a C-patch and a ring slot loaded by a rectangular gap. The simulation results show that the unit-cell can provide two values of transmission phase with a step of 180° at 12 GHz. A transmitarray antenna is also simulated to verify the performance of the unit cells. Simulated results show a good radiation pattern and validate the beam-switching capability.