Fig. 1. Schematic demonstration of the unit cell: (a) 3D view; (b) top view.基本单元结构示意图　(a) 立体图; (b) 俯视图

Fig. 2. (a) The working principle of the proposed polarization converter; (b) amplitudes and phase difference of reflected wave along u and v directions. (a) 极化转换器的工作原理; (b) 反射波沿u和v方向的振幅及相位差

Fig. 3. (a) Reflection coefficients of cross-polarization and co-polarization; (b) polarization conversion ratio.(a) 交叉极化和共极化反射系数; (b) 极化转换率

Fig. 4. Distributions of the surface current on the metallic surfaces: (a) 7.64 GHz; (b) 16.94 GHz.上下金属表面的电流分布　(a) 7.64 GHz; (b) 16.94 GHz

Fig. 5. (a) Reflection spectra for co-polarization; (b) reflection spectra for cross-polarization; (c) mean PCR with the change of incident angle.(a) 共极化反射谱; (b) 交叉极化反射谱; (c) 平均极化转换效率随入射角的变化

Fig. 6. Influence of different geometric parameters on the performance of polarization converter.不同的结构参数对极化转换器的性能的影响

Fig. 7. (a) Fabricated sample and measurement system; (b) measured result and simulation result of r_xy; (c) measured result and simulation result of r_yy. (a) 加工样品与测试系统; (b) r_xy测试结果与仿真结果; (c) r_yy测试结果与仿真结果