Design of Low Profile and Wideband End-Fire Antenna Using Metasurface

IEEE Access

Qi Wu¹  Ping Wang¹  Yu Shao¹  Rong-Bu He² 

[1] Chongqing Key Laboratory of Mobile Communications Technology, Engineering Research Center of Mobile Communications of the Ministry of Education, School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China;Electric Power Research Institute, Guizhou Power Grid Company Ltd., Guizhou, China;

关键词: End-fire antenna;    non-uniform metasurface;    low profile;    wideband antenna;   

DOI  :  10.1109/ACCESS.2020.2972690

来源: DOAJ

【 摘 要 】

In this paper, a metasurfing (MS) concept is demonstrated and applied in the design of the low profile and wideband endfire antenna on metallic surface environments. The MS comprises an array of varying patch printed on homogeneous host medium, and fed by a surface wave launcher (SWL). Each row patch is designed according to the operating wavelength and by altering the surface reactance of the MS the surface-wave mode can be manipulated into the free-space wave mode. Meanwhile, two row of rectangle patches with same size are located on between the surface wave launcher (SWL) and non-uniform MS, which is regarded as an impedance modulation to obtain a good impedance matching. The VSWR of the proposed antenna is below 2.5 from 3.8 GHz to 16.7 GHz in the measured results, which are in good agreement with the simulated results and the thickness of proposed antenna is only 5 mm (0.065λ_L, λ_L is the free-space wavelength at the lowest operating frequency). Moreover, a stable end-fire beam and low side lobe level (SLL) is obtained in a wide frequency band, and the group delay and the time-domain result also are shown to prove the good wideband transmission.

【 授权许可】

Unknown