Im Changhyeon, Lim Tae Heung, Choo Hosung
Department of Electronic and Electrical Engineering, Hongik University, Seoul 04066, Korea.
Department of Electrical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea.
Sensors (Basel). 2022 Aug 18;22(16):6187. doi: 10.3390/s22166187.
This paper proposes a 5G glass antenna that can be printed on the thick window glass of a vehicle. The proposed antenna consists of a coplanar waveguide (CPW), a printed monopole radiator, parasitic elements, a linearly arrayed patch director, and a grid-slotted patch reflector. The linearly arrayed patch director and grid-slotted patch reflector are applied to improve the bore-sight gain of the antenna. To verify the performance improvement and feasibility, the proposed antenna is fabricated, and a reflection coefficient and a radiation pattern are measured and compared with the simulation results. The measured reflection coefficient shows broadband characteristics of less than -10 dB from 24.1 GHz to 31.0 GHz (fractional bandwidth of 24.6%), which agrees well with the simulation results. The reflection coefficients are -33.1 dB by measurement and -25.7 dB by simulation, and the maximum gains are 6.2 dBi and 5.5 dBi at 28 GHz, respectively. These results demonstrate that the proposed antenna has high-gain characteristics being suitable for 5G wireless communications.
本文提出了一种可印刷在车辆厚窗玻璃上的5G玻璃天线。所提出的天线由共面波导（CPW）、印刷单极辐射器、寄生元件、线性排列的贴片导向器和栅格缝隙贴片反射器组成。应用线性排列的贴片导向器和栅格缝隙贴片反射器来提高天线的视轴增益。为了验证性能提升和可行性，制作了所提出的天线，并测量了反射系数和辐射方向图，并与仿真结果进行比较。测量得到的反射系数在24.1GHz至31.0GHz范围内呈现出小于-10dB的宽带特性（分数带宽为24.6%），这与仿真结果吻合良好。测量得到的反射系数为-33.1dB，仿真结果为-25.7dB，在28GHz时的最大增益分别为6.2dBi和5.5dBi。这些结果表明，所提出的天线具有适合5G无线通信的高增益特性。
