Fig. 1. Schematic diagram of the FT medium.

Fig. 2. Artificial birefringence medium: The coordinate is twisted along the y -axis by 45° to the coordinate. The incident plane is x-y plane, is the incident angle, is the wave vector of the incident wave.

Fig. 3. Pancharatnam-Berry phase: When the EM wave incident on the unit along y direction, and the unit rotates around the y axis, the phase changed .

Fig. 4. The model of unit cell.

Fig. 5. (a) The amplitude of and ; (b) the phase of and .

Fig. 6. The amplitude of and .

Fig. 7. (a) Main view of dielectric rings, it’s consists of 100 rings with radius of 4 mm and thickness of dielectric rings is 30 mm; (b) side view of dielectric rings.

Fig. 8. (a) The transmission wave while incident angle is 0°; (b) E-field distribution around dielectric rings; (c) amplitude of RCP wave at 13 GHz ; (d) phase of RCP wave at 13 GHz.

Fig. 9. (a) The transmission wave while incident angle is 20°; (b) E-field distribution around dielectric rings; (c) amplitude of RCP wave at 20° oblique incidence; (d) phase of RCP wave at 20° oblique incidence.

Fig. 10. (a) The transmission wave while incident angle is 40°; (b) E-field distribution around dielectric rings; (c) amplitude of RCP wave at 40° oblique incidence; (d) phase of RCP wave at 40° oblique incidence.

Fig. 11. (a) The transmission wave while incident angle is 50°; (b) E-field distribution around dielectric rings; (c) amplitude of RCP wave at 50° oblique incidence; (d) phase of RCP wave at 50° oblique incidence.

Fig. 12. (a) The transmission wave while incident angle is 60°; (b) E-field distribution around dielectric rings at 60° oblique incidence; (c) amplitude of RCP wave at 60° oblique incidence; (d) phase of RCP wave at 60° oblique incidence.