Dual-band polarization angle independent 90 degrees polarization rotator using twisted electric-field-coupled resonators

作者：Shi Hongyu; Zhang Anxue^*; Zheng Shi; Li Jianxing; Jiang Yansheng

来源：Applied Physics Letters, 2014, 104(3): 034102.

DOI：10.1063/1.4863227

• Chiral metamaterial
• Coupled resonator
• Cross polarizations
• Electric coupling
• Electric fields distributions
• Polarization angle
• Polarization conversion
• Polarization rotator

A bilayered chiral metamaterial is proposed to realize a dual band polarization angle insensitive 90 degrees polarization rotator. The unit cell of the chiral metamaterial is composed by twisted electric field coupled resonators in four-fold rotation symmetry. The simulation and measured results show that this device can work in dual band with an extremely low loss and polarization conversion ratio of more than 99%. The study of the current and electric fields distribution indicates that the cross-polarization transmission is due to both the electric coupling and the magnetic coupling.

• 出版日期2014-1-20
• 单位西安交通大学