High-Performance transparent Meta-surface for C-/X-Band Lens Antenna Application

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Cai, Tong^1 ; Wang, Guangming^1

Air and Missile Defend College, Air Force Engineering University, Xi'an

710051, China^1

关键词: Antenna applications;    Aperture efficiency;    Fabrication process;    Phase compensating;    Phase distribution;    Polarization control;    Printed circuit boards (PCB);    Transmission amplitude;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012060/pdf
DOI  :  10.1088/1757-899X/167/1/012060

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A novel strategy of designing high-performance transparent meta-surfaces is proposed by using an ABBA system. The ABBA element provides a new freedom to largely enhance the transmission of a transmissive meta-surface and suppress the fluctuations in the transmission amplitude by tuning the coupling among cascaded layers. Dual-band operating property is straightforwardly performed by employing the polarization-control principle. A well-designed transparent meta-surface, operating at f1=6.5 GHz and f2=10.5 GHz, consists of 13×17 ABBA elements with parabolic phase distributions along different dimensions. Perfect focusing effects with the same focal length and small reflection are unambiguously observed at both frequencies under excitation of differently-polarized waves, indicating strong phase compensating capacities and high efficiencies of the meta-lens. For practical application, a dual-band lens antenna (LA) is implemented by launching the carefully-designed meta-lens with a self-made Vivaldi antenna. Numerical and experimental results coincide well, indicating that the proposed LA advances in many aspects such as high radiation gain of 18.7 dB at f1and 23 dB at f2, competitive aperture efficiencies better than 30% and also a simple fabrication process based on a standard printed-circuit-board (PCB) technology. The finding opens up a new avenue to design high-performance meta-surfaces operating in multi-band or achieving integrated functionalities.